An extended composite nonlinear state feedback control approach for mimo linear systems with actuator saturation

作者：Peng Wendong^*; Yin Jibin; Liu Tao; Cao Chunyao

来源：ICIC Express Letters, 2013, 7(3 B): 1145-1149.

• Actuator saturations
• Composite nonlinear feedback control
• Composite nonlinear feedbacks
• Domain of attraction
• Nonlinear state feedback control
• Nonlinear state feedbacks
• Saturation nonlinearity
• Time-varying trajectories

In this paper, a new design method of extended composite nonlinear feedback control is presented to solve the tracking control of time-varying trajectory for MIMO linear systems with saturation nonlinearity. Enlightened by the initial composite nonlinear feedback technique, the extended control approach is established by a linear feedback law with an additional feedforward term and a nonlinear feedback law. It is a nonlinear design method that yields a varying damping ratio, which can allow fast response and almost no overshoot for tracking control. The stability guaranteed on an ellipsoid contained in the domain of attraction is rigorously demonstrated in the presence of saturation. The simulation results show that the closed-loop system has the fast rising time and almost no overshoot and behaves a perfect dynamic performance.

• 出版日期2013