LPV-based control of systems with amplitude and rate actuator saturation constraints

The control of systems with amplitude and rate actuator saturation constraints is examined using a linear parameter-varying (LPV) framework. The proposed methodology uses amplitude and rate saturation indicator parameters to schedule accordingly the parameter-varying controller and to provide graceful performance degradation in the presence of saturation. Parameter-dependent Lyapunov functions are utilized to develop controller synthesis conditions in terms of linear matrix inequalities that can be solved efficiently using recently developed interior-point algorithms. The proposed approach is applied to address a flight control problem subject to aircraft control surface deflection constraints