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Improving Transient Performance in Tracking General References Using Composite Nonlinear Feedback Control and Its Application to High-Speed XY -Table Positioning Mechanism

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4 Author(s)
Guoyang Cheng ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore ; Kemao Peng ; Ben M. Chen ; Tong H. Lee

We adopt in this paper the newly developed composite nonlinear feedback (CNF) control method to track general target references for systems with input saturation. The original formulation of the CNF control technique is only applicable to set-point tracking, in which the target reference is set to be a constant. In this paper, a reference generator, which is able to produce more general reference signals such as sinusoidal and other waves, will be proposed to supplement the CNF control technique to yield a good performance. The resulting control law comprises the reference generator and a modified CNF control law, which is proven to be capable of tracking a target reference with fast settling time and minimal overshoot. Simulation and experimental results on an XY-table show that the proposed technique gives a very satisfactory performance

Published in:

IEEE Transactions on Industrial Electronics  (Volume:54 ,  Issue: 2 )