Rate Bumpless Switching Control for Turbofan Control Systems With Actuator Fault Based on Switched Models

Abstract

This article proposes a rate bumpless switching control approach for the turbofan control systems with actuator faults based on switched models. A characterization of the rate bump restraint is introduced, quantifying the rate bump restraint level based on the state magnitude at the switching points. Unlike the existing description of the rate bumpless switching performance, this description more accurately captures the original intent of bumpless switching. By jointly designing the rate bumpless restriction-dependent switching command and dynamic output feedback control law, a robust stability condition is formulated with the actuator fault addressed. The established rate bumpless switching control method is effectively validated through simulation experiments on the hardware-in-the-loop platform and semiphysical experimental testbed.