CE150 Helicopter Model with Input Saturation by Composite Nonlinear Feedback Control
Received date: 2016-12-28
Revised date: 2017-04-17
Online published: 2018-05-31
This paper introduces the composite nonlinear feedback (CNF) control method to solve the output regulation problems of helicopter model with input saturation. To solve the output regulation problem, an observer and an output feedback CNF control law are constructed. The CNF control law includes a linear control law and a nonlinear control law. A linear state equation of helicopter model and a reference signal is proposed and solved to obtain the feedback gain and the observer gain through the Riccati equation. A linear control part with a small damping ratio and a nonlinear feedback control section for improving transient performance are constructed. In order to study the performance of the controller, we have designed two controllers with or without external disturbances,respectively. Simulation results show that the CNF controller can reduce the pursuit time and pursuit error both for time-variant signals and for time invariant signals, featuring with high transient performance.
ZHAO Ping, JIANG Yuan . CE150 Helicopter Model with Input Saturation by Composite Nonlinear Feedback Control[J]. Journal of Applied Sciences, 2018 , 36(3) : 553 -566 . DOI: 10.3969/j.issn.0255-8297.2018.03.015
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