Robust precision positioning control on linear ultrasonic motor
2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics - Trang 170-175 - 2013
Tóm tắt
Ultrasonic motors used in high-precision mechatronics are characterized by strong frictional effects, which are among the main problems in precision motion control. The traditional methods apply model-based nonlinear feedforward to compensate the friction, thus requiring closed-loop stability and safety constraint considerations. Implementation of these methods requires computation power. This paper introduces a systematic approach using piecewise affine models to emulate the friction effect of the motor motion. The well-known model predictive control method is employed to deal with piecewise affine models. The increased complexity of the model offers a higher tracking precision on a simpler gain scheduling scheme.
Từ khóa
#Friction #Robustness #Acoustics #Computational modeling #Rotors #Data models #Predictive modelsTài liệu tham khảo
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