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《Journal of System Simulation》 2010-12
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Study on Feedforward and Feedback Compensation for High Performance Linear Servo System

PAN Chao1,ZUO Jian-min1,WANG Mu-lan2 (1.School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China;2.Jiangsu Key Laboratory of Advanced Numerical Control Technology,Nanjing Institute of Technology,Nanjing 211167,China)  
Disturbance variations,such as force ripple,load disturbance and nonlinear friction,directly impose on the motor shaft,leading to significant effect on the computer numerical control (CNC) machine tool servo system performance.In order to satisfy the requirements for speed command tracking performance and eliminate the influence of disturbance,on the bases of the analyzing the mathematics model of permanent magnet linear synchronous motor (PMLSM) and disturbance variation,Elman dynamic recurrent Neural Network was introduced and compound controller with feedforward and feedback comprehensive compensation was proposed.The disturbances were compensated by feedback component and reference speed input signal was preview controlled by feedforward component.The tracking performance and respect speed of linear server system were improved.The advantages of the comprehensive compensation and dynamic of Elman NN were proved.The simulation results show that this compound control scheme is feasible and effective.
【Fund】: 江苏省“六大人才高峰”高层次人才资助项目(2008163);; 江苏省高校自然科学基础研究项目(08KJB460003);; 先进数控技术江苏省高校重点实验室开放基金项目(KXJ07123)
【CateGory Index】: TM921.541
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