| The new program was proposed which was Dual H Bridge Double-peak and bi-direction dual-pulse plating power supply, it combined the digitization and high frequency characteristic of the power switch and used the ATmega2560 produced by ATMEL as the microcontroller, and embedded PID neural network algorithm. Paper first introduced research area, background and main content of the topic; then analyzed and compared the current three main power system programs, and puts forward a feasibility and novel dual H bridge power system program. Secondly, analyze and introduce the operating principle and main waveform of the shift control ZVZCS PWM DC/DC full-bridge converter, and design the main circuit, the current conditioning circuit, the voltage conditioning circuit, the driver circuit, keyboard and LCD display, and introduce in detail the parameters selection method of the main components in the circuit and the design process of the high frequency transformer. Focus on deriving the double closed loop which was composed of the current inner loop and the voltage outer loop considering the loss of the duty cycle, the traditional PID controller and PID neural network controller were applied to the double closed loop model. Use MATLAB software simulates and analyze the two kinds of double closed loop model .The results showed that the use of PID neural network as a regulator of the double close loop model is not only to achieve the nice control characteristics which are no overshoot, no static error, fast response, short transition time, good tracking performance, but also a significant reduction in man-made regulation time. Finally, introduce the program of the PWM wave that was produced by the ATmega2560 microcontroller, and the human-machine interface which is composed of the 4*4 matrix keyboard and LCD module, and simulate them by the Proteus and AVRStudio software, and give a detailed program design process, and make real and measure the waveforms. |
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