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The third octave sound absorption coefficient testing is conducted to compare the sound absorption properties metal foam and flexible cellular materials, by using sound absorption tester with the method of trasfer function sound absorption tester with the method of trasfer function. The sound absorption mechanisms are discussed by changing the parameters of sound absorption structure, such as the thickness of matrix materials and the thickness of cavity. The results show that pearl wool and glass wool exhibited excellent sound absorption properties. The peak value of sound absorption coefficient for pearl wool reaches to 0.991, and for glass wool, 0.985. The average sound absorption coefficient for pearl wool is 0.729, and for glass wool, 0.679. Among of three metal foams, the foamed aluminum material exhibited optimum sound absorption properties, and is superior to flexible sound absorption materials. The peak value of sound absorption coefficient reaches to 0.993, and the average value reaches to 0.781. This can be attributed to the flow resistance, porosity, thickness, cavity and structure factor, which influence the sound absorption of open cell materials.

The circular actuators of dielectric elastomer are a type of basic configurations [1]. A pre-stretched polymer film with an annulus electrode will be investigated in this work. The deformation along the radius was be proved to be inhomogeneous [2]. We study the inhomogeneous properties of circular ring actuators based on the ideal dielectric model and meanwhile obtain the failure modes of tension loss which will occur under different geometric parameters. For this type of circular actuator, the loss of tension will occur before electric breakdown. The method illustrated here is generic and can be applied to other complex circular configuration. The results will contribute to the further improvement of DE.

Dielectric elastomer sensors are a new kind of capacitive sensors. They can be used to measure forces, pressures and deformations. The sensors have several advantages such as high elasticity and inexpensive fabrication compared with traditional sensors. In this paper, a new sensing device for measuring small concentrated force is proposed. The structure of the device is a cantilever beam with constant strength on which is fixed the dielectric membrane. The dielectric membrane is a capacitance sensor built with dielectric polymer coated with soft electrodes. When the cantilever beam is subjected to a concentrated force at its free end, the strain changed in the cantilever beam will induce the change in the capacitance of the membrane. According to the relation, the unknown concentrated force can be monitored by measuring the change in the capacitance. The testing results on the device show that the concentrated force at the free end of the cantilever beam is approximately proportional to the change in the capacitance. The prototype demonstrated the new device is capable of monitoring small concentrated force with prominent sensitivity.

Unimorph cantilever is widely used in many applications with its bending and tip-deflection. In this paper, a model of the cantilever with the applied voltage and tip-deflection is presented. With the use of this model, a prototype, fabricated by VHB and polycarbonate, is estimated for its bending tip-deflection under a high voltage. And the experiment system is established with a signal generator, high voltage amplifier and laser displacement meter. The experimental results and the theoretical ones are both the same. The conclusions in this paper can be used to make further research on the deformation control of structures.

In order to realize real-time detecting for solution conductivity, an on-line detector powered with 9V battery was developed. The detector consists of conductivity electrode, excitation signal generating circuit, RMS detecting circuit, MSP430F2132 microcontroller, DS18B20 temperature sensor, HT1621 displayer and SPI interface. The solution conductivity was measured according to the principle that the electrode’s output resistance varying with conductive ions concentration of the solution, the measured results could be displayed on HT1621 and be sent to other controllers through SPI interface. An optimum excitation signal that a square wave signal (the amplitude was ±3.5V, and the frequency was 1.8 kHz) had been determined by experiments, to minimize polarization effect of the conductivity electrode. Verification test had been performed for the detector, the tested results showed that maximum relative error of the detector was 2.94%, could meet the requirement of practical application.

This article provides a whole solution to the battery manufacturing execution system (MES) which realizes the complete control of data in battery manufacturing ． MES can improve the manufacturing efficiency. Along with many other functions like quality trace, production planning, quality management, production status monitoring, production tracking, profit forecast predicting profit, recording of exceptional production, raw material management, equipment management, report printing etc ．To remain competitive, manufacturers need MES solutions that meet their industry-specific needs. All the functions turn the battery manufacturing execution system into a production, management, decision-making supporting system which combines work flow, data flow and control flow．

With the development of modern society, network marketing has become an important business models. In order to build an effective shopping website interface layout design visual assessment method, and promote the standardization of website interface layout design, in this study, using eye tracking technology and statistical methods, to get the viewed hotspots and browsing habits of the subjects., then analyzed the rationality of shopping website interface layout , to provide scientific reference for website interface layout design.

TMS320F2812 is widely used in the design of embedded control system. Based on DSP TMS320F2812, the colliery high-voltage integrated protector which has setting protection, measurement, controlling and communication is developed. The design of AD module, CAN bus communication module and protection module of the integrated protector is elaborated. The structure design of its internal circuit and realization algorithms of part of modules are also given. Experimental results show that the protector achieves a good performance.

Design Factors of product-family is one of the important elements to maintain and to improve customers’ loyalty to a band. Extraction of design factors of product family based on customer needs promotes relations between brands and customers while improves satisfaction to products of the consumers. In existing studies, methods of getting customer needs have always attracted close attention. But the links between customer needs and design factors have not been adequately studied. By using QFD (Quality Function Deployment) and increasing the number of cascaded transformation hierarchies of the House of Quality, the method of extracting design factors of product family is proposed in this paper.

The fast moving consumer goods included a wide range of items. The basic characteristics of the fast moving consumer goods result in that the consumers’ buying habit is: simple, rapid, impulsive, emotional. In the trend of market segmentation, enterprises have to make the products respond quickly to design and manufacture under the premise of meeting functions. In the design process, designers find out design point by axiomatic design method, and then through a modular design, rapidly assemble the various elements thereby to design series of products with distinctive features in batch, so as to help enterprises to extend the product life cycle.

This paper introduces the design of PDF417 two-dimensional barcode digital watermarking system with SOPC chip EP2C70F896C6 made by Alters fully. Analyzed structure and working principle of the hardware and software. System used video conversion chip VGA of DE2-70 development board made by Terasic Technologies and PCI bus interface chip SD card, realized the barcode watermark control with Verilog HDL and C language common programming. The system has many merits such as high velocity, good commonality and low costs etc.

Gd and Sb doped SnO2 conductive nanoparticles were prepared by the coprecipitation method with SnCl4•5H2O, SbCl3 and Gd2O3 as the raw materials. The crystal phase and structure of the prepared conductive nanoparticles were characterized by FTIR, XRD and TEM techniques, respectively. The resistivity of the prepared conductive nanoparticles was 0.29 Ωcm; FTIR spectrum showed that the vibration peak are wide peak in 723 cm-1～451cm-1, the Gd and Sb doped SnO2 conductive nanoparticles have intense absorption in 4000 cm-1～1600 cm-1; Gd and Sb doped SnO2 have a structure of tetragonal rutile; complex doping is achieved well by coprecipitation method and is recognized as replacement doping or caulking doping; TME shows that the particles were weakly agglomerated, the size of the particles calcined at 800°C ranged approximately from 10 to 30 nm.

Nowadays, the spiral cutting machines have been widely used in many areas, such as packaging materials. However, the theoretical researches of that are very rare in academia. On the one hand, the machines’ technological principles are the commercial secrets. On the other hand, developing manufacturing of the machines has no theoretical basis. So, in a word, it’s blank in academia about the spiral cutting machines. In this article, we did quantitative analysis on the part of spiral knife roller and blade, and also set up a modal by describing that in a mathematical way. In addition, we analyzed spiral knife dynamically establishing equations of blade, ground point, roller as well, and finally realized dynamic simulation of the spiral knife by matlab tool. What’s the most special feature of this simulation is that it can do simulations for different parameters. The simulation is convenient for deepening theoretical researches, optimizing parameter selections and being auxiliary tools of design.

This paper based on the problem that mostly commonly encountered in practice is the particular dimension square stack of goods need to put on the certain height restriction ,or certain volume carriage containers. Pursuit the object arrangement programmes which can allow to put as much as possible goods in the certain volume. That is make the maximizing space utilization rate goal comes true. This article describes a process which uses of the simple idea to establish a effective mathematic method for the optimization problems，with view to give effective help to the staff.