Friction compensation of a mini voice coil motor by sliding mode control

@article{Tsai2009FrictionCO,
  title={Friction compensation of a mini voice coil motor by sliding mode control},
  author={Ching-Lung Tsai and Ti-Chung Lee and Shir-Kuan Lin},
  journal={2009 IEEE International Symposium on Industrial Electronics},
  year={2009},
  pages={609-614}
}
This paper presents a sliding mode controller to compensate the friction of mini voice-coil motor (VCM), embedded with guide pins, for position control in compact camera module (CCM) application. In the VCM, actuator full stroke is only 0.35mm or less, nonlinear friction force falls into mismatched condition and um-level resolution is required. With proposed controller, arbitrarily small steady state error can be approached by pole placement of the sliding mode state equation. The performance… CONTINUE READING

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