PAN Song, ZHANG Jian-hui, HUANG Wei-qing etc. Robust control of butterfly-shaped linear ultrasonic motor based on Takagi-Sugeno fuzzy systems[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2667-2673
PAN Song, ZHANG Jian-hui, HUANG Wei-qing etc. Robust control of butterfly-shaped linear ultrasonic motor based on Takagi-Sugeno fuzzy systems[J]. Editorial Office of Optics and Precision Engineering, 2014,22(10): 2667-2673 DOI: 10.3788/OPE.20142210.2667.
Robust control of butterfly-shaped linear ultrasonic motor based on Takagi-Sugeno fuzzy systems
To overcome friction drive nonlinear from the one-dimensional platform position driven by a butterfly-shaped linear ultrasonic motor
the fuzzy Takagi-Sugeno (T-S) models for the motor and the platform were established based on the working principle of a motor and the sector nonlinearity. Based on the T-S models
the servo positioning control algorithm without steady-state errors was designed by using augmented method. As the robust
H
∞
was considered
a disturbance rejection controller design for the T-S fuzzy models was presented. The designed control algorithm was realized on an embedded micro-controller. Experiments with different values of the stepper servo positioning were carried out. The experimental results show that the overshoot of the system in different step values is less than 4%. The experimental comparison of servo positioning control between the no-load and load conditions indicates that the system maximum overshoot is less than 5%. As compared with traditional PID control
the control system proposed in this paper gives higher positioning accuracy
good stability and an excellent robust.
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references
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