High Precision Position Control of Voice Coil Motor Based on Single Neuron PID
Voice coil motor(VCM) is widely used in high-speed and high-precision positioning control system in recent years.However,there are system uncertainty,nonlinear,modeling error,and external disturbances in the high-precision positioning control system,traditional PID control method is difficult to achieve precise positioning control.In this paper,a new position control strategy with a single neuron controller which has the capability of self-studying and self-adapting composed with PID controller is put forward,and the feedforward compensator is added to improve the dynamic response of the system in the position loop.Moreover,the disturbance observer is designed to suppress model parameter uncertainty and external disturbance signal in the current loop.In addition,the problem of high precision position control of VCM under the influence of significant disturbances is addressed,which including the gas-lubricated damping,the spring,the back EMF and ripple forces,on the basis,the mathematical model of VCM is established accurately.The simulation results show that this kind of controller can improve the dynamic characteristic and strengthen the robustness of the system,and the current loop with disturbance observer can also restrain disturbance and high frequency.
voice coil motor single neuron PID disturbance observer high-precision positioning
Liyi Li Qiming Chen Guangjun Tan He Zhu
Electrical Engineering Department, Harbin Institute of Technology, Harbin, 150001, China
国际会议
2012第八届精密工程测量和仪器仪表国际研讨会(ISPEMI2012)
成都
英文
1-8
2012-08-08（万方平台首次上网日期，不代表论文的发表时间）