Search

The hybrid power system based on multi-input converter can work under suitable mode with power management strategy which has been put forward and interleaved dual-edge modulation PWM. It also can solve a major problem that the track of maximum power fails when photovoltaic cells and the commercial power supply are load at the same time. Now a new drive method is put forward-inter-lock. This method can not only solve the problem, but also have low fluctuation of the system current. The paper theoretically analyzes the modulation effects of inter-lock drive, and compares it with dual-edge modulation PWM. Then Matlab/Simulink is used to establish inter-locking model and simulate It verifies the effectiveness of inter-lock driving method. [ABSTRACT FROM AUTHOR]

Objective To observe the effect of clinical intermediate care for elderly patients. Methods According to the diagnostic criteria and inclusion criteria, 200 elderly patients were randomly divided into experimental group (re = 100) and control group (n =1000). Elderly patients of tested group were managed with clinical intermediate care in hospital for 4 weeks, while patients of control group were at home. All patients were assessed 2 weeks, 4 weeks, 3 months and 6 months by comprehensive geriatric assessment after discharge. Results After intervention, indicators of comprehensive geriatric assessment in the experimental group were superior to those in the control group (P< 0.05). In the experimental group, indicators of elderly patients were continuously improved with time (P < 0.05). Conclusion Clinical intermediate care is contributive to the improvement of elderly patients' psychological states, body functions and the quality of life. [ABSTRACT FROM AUTHOR]

Combined with the problem of missile equipment readiness army recently concerned about, the important parameter of readiness rate affecting missile equipment readiness was researched, and an evaluation method and model of missile equipment readiness rate based on diffusion process was given. According to the related service information of missile equipment, the model was evaluated and verified. This method is accurate to analyze the readiness rate, and has reference value to improve missile readiness rate later. [ABSTRACT FROM AUTHOR]

In the hybrid power system based on double-input buck converter and power management strategy which has been put forward, we can keep the system working under suitable mode. But when the two IGBT switches at the same time, due to the reverse bias voltage, the flywheel diode wiil cut off. The commercial power current must flow through the photovoltaic that wiil affect measurement of Photovoltaic current seriously. Interleaved dual-edge modulation and inter-lock can solve the problem, theoretical analysis wiil be listed to prove the consistency of the two method. The simulation results of interleaved dual-edge modulation based on Matlab/Simulink model have confirmed the effectiveness. [ABSTRACT FROM AUTHOR]