In order to achieve the purpose of precise positioning control of voice coil motor（VCM）under high frequency response, a precise hysteresis model has been established on complex hysteresis behavior for voice coil motor，which lead to motor vibration and system instability. The C-S hysteresis model has been improved. The C-S hybrid neural network hysteresis model is proposed. Two groups of measured data of a voice coil motor are used to verify the effectiveness of the model. There are two experimental results, one is that, for the situation of general hysteresis for VCM when it working in low frequency, low speed and low acceleration(10Hz), the maximum error of the modeling is 4.8μm, about 0.48% of output value, indicating that the method can effectively compensate the simple hysteresis of voice coil motor; and the other is that, for the situation of complex hysteresis for VCM when it working in high frequency, high speed and high acceleration(40Hz), the maximum error of modeling is 6μm, about 0.97% of output value, indicating that the method can meet the requirements of a modeling with complex hysteresis.
DANG Xuan-ju;WANG Zhan-jun;YANG Da-lei.
Modeling and verification of complex hysteresis for voice coil motor under high frequency response[J]. Journal of Vibration and Shock, 2012, 31(9): 107-112
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