Reliable control of discrete-time linear systems with actuator failure

被引:0
作者
Share Pasand, Mohammad Mahdi [1 ]
机构
[1] Standard Res Inst, Fac Elect Mech & Civil Engn, Dept Elect & Elect, POB 31585-163, Alborz, Iran
关键词
Reliable control; robust control; linear matrix inequality; actuator failure; GUARANTEED COST CONTROL; TRACKING CONTROL; DESIGN;
D O I
10.1080/23307706.2019.1600439
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A sufficient condition is given for robust stability of a discrete linear system in which an arbitrary portion of input channel is permanently attenuated or disconnected due to actuator fault. The partial disconnection/attenuation of the control input, is modelled as uncertainty and dealt with via a robust control method. The proposed method enables one to design a controller in such a way that the closed loop system remains stable when any combination of input signals is disconnected if the open loop system is stable and fulfils some additional properties. It is shown that the linear quadratic regulator can guarantee reliable closed loop with some specific choices for weighting matrices. The result is extended to unstable systems by assuming additional constraints on the failed actuators. Compared to previously established results, the proposed conditions are easier to verify and applicable to a wider class of systems. An example is also included.
引用
收藏
页码:345 / 358
页数:14
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