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This paper proposes an improved L index which is adapted to analyze the voltage stability of power system with the ZIP loads. First it introduces derivation of the traditional L index. Then, it analyzes the differences between ZIP loads and PQ loads and then proposes an improved version of L index based on the derivation. Furthermore, the proposed improved index is used to analyze the voltage stability under different operation conditions of the power system with ZIP loads. The simulations show the effectiveness of the proposed improved L index.

In application-layer DoS/DDoS attacks, malicious users attack the victim server by sending lots of legitimate requesting packages, which overwhelm the server bottleneck resources. Normal user’s request thus may not be satisfied. The traditional intrusion detection systems for network-layer cannot effectively identify this attack, and recent researches on this kind of attack are mainly for Web servers. This paper proposed a new defense algorithm based on user activity for topic-based Pub/Sub communication servers in mobile push notification systems. Users consuming system bottleneck resources the most can get high scores and thus are considered overactive. With some resource retaken strategy, overactive users’ connections will be dropped according to system performance level. Therefore, the system can get rid of latent threatens. Experiments indicated that this algorithm can identify normal and abnormal users well.

In this paper, a new method using wavelet packet energy spectrum to identify transformer inrush and internal fault current was proposed. Wavelet packet transform respectively decomposed inrush and fault current, then calculated the energy of each frequency band of decomposed signal. Finally, the conclusion showed that the energy of internal fault in high frequency band is much less than that of inrush. The difference was quantified and it could be observed intuitively. Through extensive simulations, this paper proves that the method in terms of identifying transformer inrush is accurate and effective.

This paper uses the L indexes to analyze the impact of large-scale wind power penetration on the static voltage stability of the power system. First it presents some common indexes in analyzing voltage stability. Then, it introduces the principle of the L index. After that, Simulation based on the L Index of a typical power system interconnected with large-scaled wind power shows the grid alternatives have a considerable impact on the voltage stability. Finally it gives the conclusions.

In this paper, we describe some privacy threats in the Internet of Things and some research works on privacy protection. We present a new scheme base on cryptosystem to protect privacy in the Internet of Things. The scheme includes location privacy protection, data privacy homomorphism mechanism and information hiding technology, and secure multi-party computation on data privacy.

The research of diagnosis and treatment system of child mental health disorders is based on artificial neural network and expert system. It combines the diagnosis standard of ICD 10, DSM IV with 40 years clinical experiences and knowledge of senior child psychiatrists. It also combines computer science with child psychiatry, child psychology, psychological estimate, psychological therapy and so on. The learning samples come from the epidemiological data in more than a dozen nationwide hospitals. The correct rate of system diagnosis is 99%. The system can diagnose 61 kinds of child mental health disorders and give a treatment method suggestion.

In order to study the impact of mechanical properties of aluminum alloy that is added into carbon powder, the aluminum alloy with carbon powder were melt and test bars were cast. The mechanical properties were tested by a tensile tester, the fracture morphology were observed by SEM and the morphology of material surface and composition were checked by SEM and EDAX. The results showed that: several slip platforms were observed during bar stretching and the longer slip platform is better elongation, so the ductile of alloy was improved obliviously after adding carbon powder. Microscopic studies showed that the aluminum alloy system has been infiltrated by the carbon powder and some stable compounds were formed in the alloy systems. Overall, Carbon is added can effectively promote the toughness of the aluminum alloy and improve the mechanical properties to some extent. Keywords: Carbon powder, Cast aluminum alloy, Slip platform, Toughness

The vehicular LNG(Liquefied Natural Gas) tank is a key component in the land transportation of-163°C LNG. The cryo-insulation performance of vehicular tank directly affects the security of LNG transport greatly. Based on a 40m3 vehicular LNG tank, a structural design of the vehicular LNG tank is completed, which includes its body,nozzles,heat-insulating layer,sealing devices,saddles and so on. With the safety requirements of less than 2% LNG evaporation rate, the leakage heat of LNG tank is analyzed completely. Then, a heat-insulating layer outside of LNG tank is completed with thermal design. Finally, with thermal software, the effectiveness of heat-insulating layer is proved.

The Internet of things is the technology extension and expansion of computer, Internet and mobile communication network. We will strongly rely on the Internet of Things in the future. The Internet of Things provides more conveniences, but it also will face more threats. In this article, we describe architecture of the Internet of Things, the function of every layer and what components every layer need. Our emphasis is to analyze the threats for the security and privacy at different levels of architecture in the Internet of Things.

The design uses silicon-AlN thin films as the piezoelectric substrate, Use apo- dization weighting methods to optimize the design of IDT. The improved δ function model was Modeling Tools of Apodization weighted ellipse IDT structure, According to the result of simulation, we designed a layout of SAW band-pass filter and fabricated a sample of it which center frequency is 300MHz and insertion loss is 7dB, The research shows the consistency of simulation results with the experimental results.

Using 663-tin bronze, Ni, W, nanoAl2O3, MoS2, graphite, CaF2, and Ni coated graphite as the matrix alloy powder, in which copper-coated carbon fiber of 5%, 7%, 9%, 11% and 13% in volume fraction were added as the reinforcing phase, a novel type carbon fiber/copper-matrix self-lubricating composite materials was prepared by means of powder metallurgy. The results indicate that the mechanical properties of the composite materials are improved after adding copper-coated carbon fibers. The composite materials reach optimal overall mechanical performance under testing when the volume fraction of the added copper-coated carbon fibers is 11%.: with a hardness of 57.8 HV and a compressive strength of 222 MPa. The addition of carbon fiber also improved the friction and wear properties of the composite materials. Increasing the volume fraction of fiber, was found to increase the wear resistance and improve self-lubricating performance. A volume fraction of 11% gave a friction coefficient of 0.09 and abrasion loss of 4mg.

To further study the stability of vehicle dynamics, a vehicle handling stability’s nonlinear model (including longitudinal, lateral and yaw movement three degrees of freedom) was established. Genetic algorithm was proposed for the vehicle dynamics system’s equilibrium points with 3-DOF. This algorithm solves the problem that cannot be solved through the traditional analytic algorithms and numerical methods. Comparing with the existing research results, the feasibility of solving the equilibrium point by the genetic algorithm is verified. It provides the theoretical foundation for dynamic modification and optimization design of powertrain.

This paper studies the control of a two-wheeled vehicle which is similar to an inverted pendulum system and has hand sensors to make right and left turns. Because the two-wheeled vehicle is unstable and its load is uncertain, PID and LQR controllers are used to stabilize the uncertain and unstable plant. Moreover, the two controllers can make it move forwards and backwards, and turn left and right. The two controllers are implemented into a microcontroller, and the microcontroller outputs appropriate control signals to drive the two-wheeled vehicle according to the three-axis accelerometer and gyroscope sensors. Finally, we verify the controllers' efficiency and compare the difference between above two controllers.

TiO2/NCCN nanocomposites have been prepared by sol-gel and hydrothermal methods. Firstly, the NCCN was prepared by electrospinning technology, then the amorphous TiO2films were coated on the surface of the NCCN by a sol-gel method, and TiO2(anatase structure) nanoparticles could be fixed on the surface of NCCN by a hydrothermal method to get higher photocatalysis efficiency. The photocatalytic activities indicate that the TiO2/NCCN nanocomposites exhibited a good photocatalytic activity for photodegradation of methylthionine chloride (MO) solution under UV light irradiation, leading to an important application in photodegradation of organic pollutant.

In this study we compared the efficiency of four kinds of amendments (silkworm excrement, coconut husk, red mud, sepiolite) and their mixtures to immobilize the heavy metals present in a contaminated acidic soil (Pb:420 mg ·kg−1; Zn :334 mg· kg−1) and to influence several enzymatic activities. The results showed that, silkworm excrement, coconut husk and their mixtures, which had high pH and/or high content of organic matter, reduced exchangeable Pb in the soil by 18% to 46%, and reduced available Zn by 24% to 35%, which was more efficacious than single sepiolite. The complex of silkworm excrement and red mud had a great influence on soil pH, while coconut husk increased the content of organic matter in soil significantly.

By Hainan tropical rainforest area geology, physiognomy, the characteristics of climate, tropical rain forest complex typhoon heavy rainfall weather conditions, and the characteristic of the tropical rainforest landslide occurred, researching and analyzing the relationship of among tropical rainforest landslide, tropical rain forest vegetation destruction the relationship ,the heavy rainfall and human engineering activities. Summed up the vegetation destruction, heavy rains and engineering activities of the three factors of coupling is the most important characteristics of tropical rain forests of landslide, and put forward reasonable tropical rainforest landslide protection and management measures.

A thermodynamic model of calculation of sulfur distribution ratio between B2O3-containing slag and molten steel has been developed on the basis of the ion and molecule coexistence theory. Based on the model, the effects of B2O3 content and slag basicity on the sulfur distribution ratio in 1873K were investigated respectively. The results indicate that the sulfur distribution ratio decreased with increasing the content of B2O3, and when the content of B2O3 exceeds 6%, the sulfur distribution ratio was lower than 2.0. Therefore, in order to ensure the desulphurization ability of slag, the content of B2O3 should be controlled at about 6%. Moreover the sulfur distribution ratio can be increased by increasing the slag basicity.

Analyze and derive the relationship of each electrical quantity of the single-end fault location algorithm and present a fault location formula of two-end fault location algorithm. Through the simulation research of MATLAB/Simulink, when the fault occurs near in either end of the line, the ranging device near the fault point is adopted, fault distance can be measured with single-ended electrical quantities algorithm, when the fault occurred in near the midpoint of the line, two-end fault location algorithm is chosen to ensure the results’ accuracy higher.

With the development of Hainan tropical rain forest tourism, the constructions of transport and water conservancy facilities are improving in these areas, which will probably cause landslide for changing the topography of the original slope conditions. In that context, a study is performed to find out the reasons for the landslide in tropical forests areas by employing some examples.

This research studies the impact of maximum allowable stopping time for machining tools on the production-inventory policy under a variable tools lifespan and demand. A mathematical model is developed to determine the optimal maximal allowing stopping time, the inventory level, and the replenishment interval. A numerical example was conducted using an exhaustive searching method to show the implementation of our model. The results indicate that, compared to the traditional policy which only repairs and replace the broken tools, adopting a maximum allowable stopping time dramatically reduced the total production cost.

Based on the direct reduction alloying theory, experiments on chromium molybdenum alloy prepared through the direct reduction and alloying reactions between the high-carbon ferrochrome and molybdenum oxide were conducted in a laboratory scale. The critical factors that would impact the reduction rate of molybdenum oxide and the yield rate of molybdenum were analyzed. The results indicate that the reduction rate of molybdenum oxide can exceed 90%, meanwhile, the yield rate of molybdenum is affected by many factors and fluctuates in a wide range. As temperature rising, the reduction rate of molybdenum oxide is increased whereas the yield rate of molybdenum is decreased. With the amount of molybdenum oxide added increasing, the reduction rate of molybdenum oxide and yield rate of molybdenum are decreased simultaneously. Making slag during melting process and molybdenum oxide roasted by addition of lime are effective measures to improve the yield rate of molybdenum.

According to manufacturing characteristics of mixed private cloud enterprise, production operation management requirements of mixed private cloud enterprise are analysed. Function of production operation management in mixed private cloud enterprise is summarized. Specific content of production operation management is inducted based on mixed cloud enterprise. The process of production operation management are designed in detail. Object model diagram of production operation management are elaborated. It is analysed that the content of the reform of production order and the specific process are obtained. It is researched that production order form to be queried and finally end process has been preliminaryly discussed.It has laid a basis for optimal and reasonable application of production operation management.

It is known that a stakeholder analysis is a strong tool to identify and adjust groups with different interests upon the proposed reform. However, it is not a handy approach to conduct a stakeholder analysis of EV spread in China. This is due to that the information about different stakeholders in China is not entirely available. Interviews to the stakeholders in China have not been carried out as a result of short project period and area limit. Therefore, this stakeholder analysis will not be able to fulfill the frame that was described in the method chapter. Some of the judgments will be based on estimation. To mark the level of support from different stakeholders, we will give 5 grades to each in a form of ++, +, 0, -, -- instead of the method of 0-100 as it is rather difficult to achieve that precision.

In order to intelligentize the LED lighting systems,this system adopts the Freescale series MC9S08AC16 as the controller, senses the light environment induced by the photoresistor and uses the SS-101 pyroelectric infrared sensors to sense the presence of people. In addition, it uses LM3404 chip to drive LED headlamp unit and by changing the duty cycle of PWM to achieve the switches and automatic adjustment of brightness of LED lights. Experiments show that the light source brightness provided by this system is stable and reliable and the combination of infrared sensing technology and PWM technology achieves the intelligence of LED lights. Moreover, it has high application value.

According to the design and development process of XX Airborne Navigation and Control System, we analyzed the main technology characteristics of design and development for hardware platform, software platform and adapter, and then put forward the realization proposal.

Through to conduct uniaxial compression test on concrete of suffering sulfate attack, the frequency characteristics of acoustic emission signal are analyzed in the corrosion concrete failure process. The results show that: the acoustic emission ringing counts show phases developmental rule with the relative stress increased.When the relative stress is low, acoustic emission signal of the damaged concrete S1 is intensive and large amplitude, while the acoustic emission signal of the no damage concrete S0 is active - relative quiet - active - relative quiet and the acoustic emission signal of the damaged concrete S2 is active - quiet - active.

Taking the independent four motorized wheels driving electric vehicle (4WD EV) as study object, the method and index evaluating ride comfort of automobile suspension system were described, and the input model of random road excitation and the dynamics model of 1/4 vehicle vibration system were established, then the simulation of ride comfort of the established model was conducted, so the evaluating indexes’ responses in time domain and frequency domain were obtained. Above all, the changes of these indexes which are suspension damping, spring stiffness and un-sprung mass were analyzed, their effects on the ride comfort of electric vehicle driven by motorized wheel studied, thus provided reference for the development of electric vehicle driven by in-wheel motor.

The stability of submerged functionally graded (FG) cylindrical shell under hydrostatic pressure is examined in this paper. Based on the Flügges shell theory, the coupled frequency of submerged FG cylindrical shell is obtained, using wave propagation method and Newton method. Then the critical pressure of FG cylindrical shells is given by applying linear fitting method. Results are compared to known solutions, where these solutions exist. The effects of constituent materials, volume fraction, boundary condition and dimensions on the critical pressures of submerged FG cylindrical shell are illustrated by examples.

Based on the railway tunnel engineering, the research on comprehensive technological for the monitoring of tunnel construction is performed. It is shown that the deformation of wall rock would mainly suffer the comprehensive influence of multiple factors like type of the wall rock, construction method and supporting measures, size of the excavated section, etc. through the monitoring of the crown settlement, clearance convergence and ground settlement. The wall rock will be stable within 20d and 40d after the tunnel excavation. And the secondary tunnel lining could be constructed. Numerical simulation method was also adopted to analyze the deformation and stress of the wall rock. It is presented that the construction interval shall not be too long for the stability of wall rock. Therefore, the numerical analysis method and site monitoring method could be used together to achieve more comprehensive and reliable monitoring of tunnel construction.

Low permeability of fast-growing eucalyptus wood restricts its high value in use. In order to explore effective ways of improving the permeability of eucalyptus wood, the method of applying microwave radiation to Eucalyptus urophylla (Eucalyptus grandis×Eucalyptus urophylla) is used to promote its rapid evaporation of water, by which vapor pressure highly increases inside, then vapor bubbles break through the weak points of the wood tissue, as a result, the permeability of the wood is improved. Under the same conditions, wood was tested to achieve the results of water absorption rate (WAR) and water loss rate (WLR) in water sorption measurement and saturated suction drying experiment respectively, after which the permeability, the modulus of rupture (MOR) as well as the modulus of elasticity (MOE) of the test wood are recorded. The results show that the WAR and WLR of the microwave treated wood is higher than that of the untreated wood. Thus it is concluded that microwave radiation can improve the permeability of urophylla wood. But the time of microwave pretreatment has a significant effect on the WAR and WLR, which may be associated with lower microwave power and the variability of the tested material. MOR and MOE of the test material did not change significantly after the microwave treatment.

Digital watermarking technology has already been used for secure data aggregation in wireless sensor networks. However, most of the existing watermarking technologies are irreversible, and the embedded watermark will cause some damage to the data collected by sensors. In this paper, we proposed a novel distributed reversible watermarking technology based on an improved difference expansion scheme. Due to the hierarchical clustering architecture organized according to LEACH protocol, a distributed self-organized mechanism is established within clusters for the watermark generation. The whole watermark is split into several segments and the watermark segments are assigned randomly to different sensors within a group. In addition, a pair of synchronized random sequence generators is applied on both the sensors and the sink to fresh the data.

Ontology mapping is the technological foundation of semantic integration, ontology merging and ontology alignment. In this paper, we propose approaches of ontological property mapping based on multi-strategy. First we use different strategies to deal with data type property and object type property. Then the optimal property mapping results of multi strategies are chosen. Finally, we present experimental results with high accuracy and point out future possible research directions.

Ontology matching is a core task to enable interoperability between ontologies. In this paper, we propose a method for large scale ontology partitioning and block matching based on improved ROCK clustering. At first, two ontologies are partitioned based on improved ROCK clustering. Then we adopt block matching strategies based on taxonomy and anchors, and obtain matching results. Finally, we present experimental results with high matching quality and point out future possible research directions.

Different cloud services need different resources, how to use the resources efficiently has become one of the hot research topics about cloud computing. In order to improve the utilization of resources in cloud, this paper proposes an automatic cloud service classification method, which uses an artificial neural network to predict the type of service resource requirements, and classifies services based on the predicting result. In this paper, we do classification experiments on three groups of Web services on Web service site. The experiment results show that, the method is effective and can predict the type of resource requirements for Web services automatically.

The paper propose an outer-rotor permanent magnet synchronous motor (PMSM) with peak torque of 3000N.m. The position measuring system based on CPLD and dual magnetic sensor is developed. This system can handle two channel signals obtained from two sensor heads, and provides correct and reliable position feedback signals for the motor control. According to the mathematical model of the PMSM, full digital high precision control system with triple feedback closed loops are designed and implemented in experimental evaluation. The test results validate that the system is feasible and the control precision can reach 1.5 arc-second.

Aiming at solving ontology heterogeneity, in this paper, we propose approaches of ontological concept mapping based on multi-strategy. At first, we use strategies based on concept name, property and taxonomy to calculate similarity. Then mapping results of multi-strategy are obtained. Finally, we present experimental results with high accuracy and point out future research directions.

As inner cooling grinding can break the closure of grinding area and solve practical engineering problems resulting from too high grinding temperature, it can be used to realize the grinding of difficult-to-machine materials, such as Titanium alloy, in a general machine such as M7130. An inner cooling grinding wheel, a grinding carriage and cutting fluid system are the key parts of a inner cooling grinding system, and an inner cooling grinding wheel must be fixed on a plain grinder by a grinding carriage, so this paper mainly studies how to design and manufacture a tooling for an inner cooling grinding wheel, which has simple construction and reliable performance. Grinding experiment shows it can dramatically reduce cutting temperature and effectively avoid grinding burn, thus grinding quality is improved.

This article aims to quantitatively measure the contribution rate of construction land scale to the secondary and tertiary industry growth in GuangXi province, by establishing Cobb – Douglas production function. The results show that: construction land scale has a significant influence on the impact on Guangxi industrial economic growth; the construction land demand will remain strong in the future for the economic development of GuangXi; constraints of construction land scale on economic growth are obvious in GuangXi. So it can be concluded that demand- supply contradiction of construction land will be further intensified in GuangXi with the continuous development of industrialization and urbanization, and intensive utilization policy must be strengthened in order to improve construction land use efficiency.

Water/toluene interfacial self-assembly of nanostructures is a powerful bottom-up approach for film fabrication because of the low cost and high efficiency, and it is a simple and universal method for almost all low-dimensional nanostructures. The method involved adding alcohol and then toluene (here the dispersant was itself alcohol, only toluene was added) into SiO2 nanoparticle dispersion, and then a large quantity of distilled water was rapidly poured into the mixed system. Simultaneously, nanoparticles in the dispersion were extracted to the water/toluene interface, forming a thin film with a nearly perfect hexagonal close packed phase. Large-area nanoparticle monolayer films (e.g., more than 20 cm2) could be prepared in less than 1 min. The close-packed structures of these thin films were verified by a field emission scanning electron microscopy (FESEM, Hitachi S-4800, Japan). We also investigated the whole process of forming the films and found out the mechanism of water-induced interfacial assembly. As for the specific kinetic mechanism of the fabrication process, it is expected to further study in later time.

SIFT (Scale invariant feature transform) and correlative algorithms are now widely used in content based image retrieval technology. They compute distance and use neighbor algorithm to look for the optimal matching couples. The disadvantage of such way is high complexity, especially when huge amount of images need to be retrieved or recognized. To solve this problem, a new matching way based on feature space division under multi-scale is proposed. The algorithm will divide the feature space under multiple scales, so that those feature points which are located in somewhere can use a code to represent, and finally realize the matching through the code. Without calculating distance, the algorithm complexity is greatly reduced. Experiments show that, the algorithm keeps the matching accuracy and greatly enhance the efficiency of the matching at the same time.

As regards the reliability of the vehicle electronic devices on the tracklayer getting worse due to severe vibration, isolation theory and mechanical model of the GWF vibration isolator and wire-mesh vibration isolator were analyzed, and the test research on the isolation effectiveness of the two isolators applied to the isolation of the vehicle electronic devices were carried out. The test results show that the vibration source of the foundation of the electronic device is mainly from the structure resonance, and the two dry friction vibration isolators exhibit excellent isolation effectiveness on different roads and at different speed. The wire-mesh vibration isolator shows better performance than GWF vibration isolator on three-dimensional comprehensive isolation.

The five double layer cylinder reticulated shells (single diagonal rod cylinder reticulated shell, Foeppl cylinder reticulated shell, double diagonal rod cylinder reticulated shell, lamella cylinder reticulated shell and three way grid of cylinder reticulated shell) are developed by adopting the upper and lower translation method. Five connection forms of web member (cross truss, positive four pyramidal, upend four pyramidal, evacuated positive four pyramidal, evacuated upend four pyramidal) and the methods of the node generation and element connection are established in the cylindrical coordinate system. By using the ANSYS parametric design language APDL, the corresponding parametric design macro program is developed so that the five double-layer cylindrical shells can be parametrically modeled under the given parameters such as shell type, shell span D, rise high t, thickness h, length L and number of grids m and n, etc. Examples prove that this method is simple, efficient and pragmatic, which provides great convenience for the force analysis and the optimization scheme comparison.

This paper presents a preliminary idea for sensing the deformation of ion-conductive polymer metal composite (IPMC) actuator based on current detection. This method is based on the principle that the impedance of the IPMC actuator is correlated to its bending curvature. Experimental results on the relationship between actuating voltage, current and deformation are presented. It is shown that there are phase differences among these three variables. And it is further shown that within a certain range of deformation, there is a correlation between the impedance and the deformation. The findings suggest it is possible to design a novel way to detect the output feedback of IPMC actuator.

Color of grape berry changed a lot during ripening that might reflect the maturity of table grape. In this study, the color difference of Kyoho grape skin was analyzed by CR-400 chroma meter, and the value of L*, a* and b* were measured at different stages of maturity. The results showed that the value of L* and b* decreased along with maturity, which reflected in the color of the grape skin turning darker and bluer. In addition, the value of a* increased continuously until 80% maturation and then decreased after this stage of ripeness. Results of correlation analysis showed that the value of L*, a*, b* and maturity were highly correlative (p < 0.01). Maturity was significant negatively related to L* and b*, and positively related to a*. There was negative correlation between a* and L*, b*, while significant positive relation between L* and b*.

Combined with a design of steel reinforced concrete (SRC) transfer beam in a tall building, and by analyzing interaction between transfer-beam and shear wall by the finite element method, the optimal model is set up. It is to minimize the total cost subjected to constraint of bearing capacity etc. By proper optimal method, the model of SRC transfer beam is optimized. The results show that the beam size achieves a fair division subjected to the condition of strength, structure etc. Meanwhile, actual design software indicates that the optimized data meet the design.

Positioning control is widely used in many fields of applications, such as CNC machine tools, robotic motion control. This paper presents a novel method for position offset detection with a multi-switch type Hall sensors and a control design of tracking the moving object system based on PLC (programmable logic controller). The experimental results showed that the Hall switch sensor could follow the magnets in the different position without departing from each other when the rotating speed of the magnets is no more than 100 [rpm].

Robust control for a class of singular systems with distributed delaysand uncertainties is researched. Firstly, a linear state-feedback controller isdesigned. Secondly, without model transformation and matrices decomposition, Asufficient condition for the studied systems, which makes sure the systems tobe regular, impulse free and asymptotically stable, is given by constructingthe appropriate Lyapunov functionals in terms of linear matrixinequalities(LMIs) method and integral inequality technique. The obtained results can be shown in LMIs andsovled easily by LMI toolbox in Matlab. At last, A numerical example is givento illustrate the validity of the method

In this paper,for the precision of tension control affects the products quality and performance of the device. In the coiling process while the tension control of the lead plate coiling machine is not stable, it will cause uneven thickness of lead sheet, affect the winding quality of lead sheets, and impact electrolysis efficiency. In this paper, according to the requirements of electrolytic process and the lead sheet winder actual working process, designing a tension control system in order to improve the precision of tension control.

Temperature control is the key problem in the design and manufacture of electric blankets. In order to solve current technological failure to real-time control of the temperature of electric blanket, this paper applies technical means of DS18B20 temperature acquisition and relay control temperature heating, together with key circuit, display circuit as well as other auxiliary circuit, and the system achieved electric blanket working temperature real-time intelligent control. Relay output controlled the temperature closed loop control by single-chip microcomputer, and a new type of intelligent temperature control technology of electric blanket is developed, real-time temperature control is enhanced, which improved the security and energy conservation of electric blanket.

For differences of time-domain energy distribution of different gear fault vibration signal, an analytical method based on local mean decomposition (LMD) and least squares support vector machine (LS-SVM) is proposed to apply to gear fault diagnosis. First vibrational signal of gear is decomposed into a series of product functions (PF) by LMD method. Then extracting energy characteristic parameters of PF components which contain main fault information to constitute a fault feature vectors, which is considered as input sample of well-trained LS-SVM, and then identifying working state and fault type of different gear can be identified accurately and effectively by diagnostic method based on LMD and LS-SVM.