Abstract
This paper presents a robust gain-scheduling approach for the control of diesel auxiliary power unit (APU) for series hybrid electric vehicles (SHEVs), using the linear parameter-varying (LPV) techniques. An average physical model of the diesel APU is established, which combines the subsystem models including diesel engine, synchronous generator, and three-phase diode rectifier in an elegant way. The nonlinear system model is then formulated as a quasi-LPV form with parametric uncertainty and augmented with performance objectives in a robust control framework. As a solution to this type of control problem, a robust LPV control synthesis method is proposed and its numerical implementation issues are also considered. Simulation results verify the performance of the proposed robust LPV controller.
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