Journal of Shanghai Jiaotong University ›› 2017, Vol. 51 ›› Issue (2): 157-.

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Anti-Windup Controller Design for a Multi-Propeller Aerostat

LIU Fen,CHEN Li,DUAN Dengping   

  1. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China
  • Online:2017-02-28 Published:2017-02-28

Abstract:

 Two controller design methods,  direct method and indirect method, are used to design antiwindup controller for the multipropeller aerostat with asymmetric actuator constraints. A linear transformation is applied to transfer the asymmetric constraint into a symmetric one. As a result, the generalized sector condition is used to deal with the saturation nonlinearity. By using a quadratic Lyapunov function, linear matrix inequality (LMI) based synthesis condition is presented to address the problem of L2 performance analysis of the saturation constraint closedloop system. The indirect method and the direct method are applied to design controller. The solution of the controller is transformed to a convex optimization expressed in a LMI form and solved by YALMIP toolbox. Finally, simulation results of the direct method and the indirect method show their effectiveness.

Key words: multi-propeller aerostat, controller, asymmetric constraints, anti-windup;linear matrix inequality (LMI)

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