Research On The Performance Of AC PMSM Servo Controller System

As industrial automation degree is increasing day by day, the electric servo system is putforward more and more high performance requirements.sine wave of permanent magnet synchronousmotor (PMSM) has been widely used in electric servo system because of its superior performance. Itis very importantly significant to research and develop high performance permanent magnet ac servosystem.This paper introduces the permanent magnet synchronous servo system development situation,establishes the mathematical model of permanent magnet synchronous motor, determines vectorcontrol scheme based on rotor magnetic field oriented, And establishes permanent magnet ac positionservo system vector control simulation model in the MATLAB/Simulink environment. UsingBang-Bang PID control with differential feedback and sliding mode control to improve conventionalPID controller, the simulation and experimental results indicate that the improved PID control andsliding mode controller can effectively improve the speed loop and position loop dynamic responseperformance. At the same time, in this paper, the motor rotational inertia identification method wasstudied, and the traditional and reduction method is improved. At the same time, the motor inertiaidentification method is studied, and improve the traditional acceleration and deceleration method in thispaper.On the basis of theory and simulation analysis，a set of1.5KW digital permanent magnet acmotor servo control system principle prototype is built up. Choose TI company DSP2812chips ascontrol core, and Fusi company IPM7MBP50RA060as the main power inverter module, use C towrite servo control software, and display system status through the DA in time. Through the systemdebugging, gives the main experiment waveform, and controller are optimized according to the testresults. The simulation and experimental results show that the servo system has good dynamic andstatic performance.