access icon free Robust finite-time stability and stabilisation for switched linear parameter-varying systems and its application to bank-to-turn missiles

Finite-time stability analysis and controller synthesis for switched linear parameter-varying (LPV) systems are discussed in this paper. A new finite-time stability condition and robust finite-time controller design method are presented for switched LPV systems with two different structured uncertainty modelling assumptions (i.e. affine linear structured uncertainty or polytopic structured uncertainty). On the one hand, by using the piecewise parameter-dependent Lyapunov-like function, a less conservativeness finite-time stability condition is established. On the other hand, the new condition based on linear matrix inequalities relieves the controller design burden of dealing with specific applications. Finally, the provided design method is highly desirable to treat the problem of attitude control of bank-to-turn missiles with different channels coupling, and computer simulations demonstrate the effectiveness and superiority of the theoretical results.

Inspec keywords: control system synthesis; switching systems (control); linear matrix inequalities; uncertain systems; Lyapunov methods; linear parameter varying systems; robust control; missile control

Other keywords: channels coupling; affine linear structured uncertainty; finite-time stability analysis; linear matrix inequalities; switched LPV systems; controller synthesis; robust finite-time stabilisation; switched linear parameter-varying systems; polytopic structured uncertainty; robust finite-time stability; computer simulations; robust finite-time controller design method; piecewise parameter-dependent Lyapunov-like function; structured uncertainty modelling assumptions; bank-to-turn missiles

Subjects: Time-varying control systems; Linear control systems; Military control systems; Control system analysis and synthesis methods; Stability in control theory; Aerospace control; Algebra

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