| The proton exchange membrane fuel cell (PEMFC) is becoming the most promising new energy in the 21st century, such as zero emission and high energy conversion efficiency etc. The air supply subsystem is one of fuel cell engine important components, which adjusts amount of wind in the base of variety of load. The Design of control system for BLDCM in Air Blower of Fuel Cell is one of the important ways to enhance its performance. In this paper, on the foundation of analyzing movement principle of BLDCM, the software and hardware control system for BLDCM has designed, the intelligent control strategy of velocity-loop, which based on Fuzzy-Multiple_model switching, are proposed. The main contents are as follows:The author elaborate the reasons why control system choice BLDCM to actuate the fuel cell air blower. The unique feature and principle of BLDCM is analyzed. Based on 2407A, the author designed the overall concept of control system for BLDCM.By the structure of control system for BLDCM, the author completes the hardware control system based on the fixed-pointed, special-purposed chip for motor control, including drive and inversion circuit, system protection circuit, examination circuit and control circuit etc.With Code Composer Studio, the author completes the software control system by the way of mixed programming with C language and Assembly language, including initialization, starting, position detection, commutation, current sampling, system protecting etc.Intelligent control strategy of BLDCM is studied. The author has designed a improved tow-loop control system for BLDCM, traditional PID for electric-loop, mixed control with Fuzzy-PID and traditional PID for velocity-loop, which switch the two by Fuzzy-Multiple_model switching. The simulation result indicated that the control proposal may improve dynamic property and static property of the control system distinctly, and the control proposal may .obtain better control effect. |
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