A Hierarchical Robust Control Design With Non-Parallel Distributed Compensator and Application to Aircraft Engines

• Main Authors: Muxuan Pan, Hao Wang, Binbin Gu, Xiaojie Qiu, Ye-Hwa Chen
• Format: Article
• Language: English
• Published: IEEE 2019-01-01
• Series: IEEE Access
• Subjects: Uncertain T-S Fuzzy system; hierarchical robust control; uniformly bounded; uniformly ultimately bounded; aircraft engine/turbofan; semi-physical simulation
• Online Access: https://ieeexplore.ieee.org/document/8843950/

This paper proposes a hierarchical multivariable robust control design for a class of uncertain nonlinear dynamic system. The dynamic system is described by an uncertain T-S fuzzy model. The uncertainties in the model are structure matched and norm-bounded. For this fuzzy model, a hierarchical robust control consisting of two level compensators is presented. While the level 1 compensator ensures the basic robust performance, the level 2 compensator restrains the uncertainty. Under this design, the controlled system is uniformly bounded and uniformly ultimately bounded. To illustrate the design approach, the application to a multivariable control of turbofan engines is discussed. The semi-physical simulations of the controlled turbofan show that the resulting control is able to guarantee the prescribed boundedness in a more practical condition.