| Because of its diversified structure,excellent control performance,the permanent magnet synchronous motor(PMSM)occupies an important position in the AC servo system.With the continuous development of material,power electronics,microprocessor technology and mechanical manufacturing,the PMSM is widely used in various industrial fields.The study of the PMSM and its control system has important theoretical significance and application value.The present study develops several types of control strategies with advantages based on the detailed analysis of the PMSM structure and its mathematical model,and further simulated by Matlab/Simuink software.The outcome is achieved with the design of the PMSM control system based on processor DSP-TMS320F28335 of TI Inc.as the core.The main work of the thesis includes:(1)The related literatures at home and abroad are consulted,which include the development process,research status and prospect of the PMSM and its control technology.The significance and purpose of the subject research are further clarified.(2)The working principle and mathematical model of the PMSM are analyzed in depth,and on this basis,the commonly used control strategies of the PMSM are discussed and compared.The system simulation model in Matlab/Simulink environment is established.(3)The sliding mode control(SMC)is applied to the PMSM vector control system.The PMSM control strategy based on 2nd-order terminal SMC by using terminal sliding mode theory is designed and the corresponding performance is verified by simulation.(4)The processor DSP-TMS320F28335 and its performance characteristics are introduced.The function module hardware circuits of the PMSM control system with the DSP as core are designed.In addition,with CCS software as development platform,the software program of the PMSM vector control system is developed,which includes the main program,interrupt service programs and subroutines of each function module.Finally,the whole control system running status is experimented. |
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