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A Relaxed Observer-Based Control for LPV Stochastic Systems Subject to H Performance

  • Guan-Wei Chen
  • Cheung-Chieh KuEmail author
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Abstract

A relaxed observer-based control problem of the disturbed Linear Parameter Varying (LPV) stochastic systems is addressed in this paper. For the control problem, some sufficient conditions are derived via a Lyapunov function whose positive definite matrix is not required as the diagonal case. Besides, a general H performance index is proposed to constrain the effect of external disturbance on the state and estimation error. Furthermore, a lemma is proposed to eliminate the oscillation caused by determining performance level of state and estimation error. Another lemma is developed via extending projection lemma to convert the derived conditions into strict Linear Matrix Inequality (LMI) form. By using convex optimization algorithm, all feasible solutions can be obtained by a single-step calculation to establish an observer-based Gain-Scheduled (GS) controller. Based on the designed controller, the asymptotical stability and H performance of the LPV stochastic systems can be guaranteed in the sense of mean square. Finally, two examples are provided to demonstrate the effectiveness and applicability of the proposed method.

Keywords

Gain scheduled control H performance LPV system multiplicative noise observer-based control 

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References

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Copyright information

© ICROS, KIEE and Springer 2019

Authors and Affiliations

  1. 1.Department of Marine EngineeringNational Taiwan Ocean UniversityKeelung CityTaiwan

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