Integrity against arbitrary feedback-loop failure in linear multivariable control systems
Automatica (Journal of IFAC)
Robust control of a class of uncertain nonlinear systems
Systems & Control Letters
Robust and reliable H∞ control for linear systems with parameter uncertainty and actuator failure
Automatica (Journal of IFAC)
Complex Variable Methods for Linear Multivariable Feedback Systems
Complex Variable Methods for Linear Multivariable Feedback Systems
Brief Paper: Reliable State Feedback Control System Design Against Actuator Failures
Automatica (Journal of IFAC)
Brief Performance gain margins of the two-stage LQ reliable control
Automatica (Journal of IFAC)
Brief Reliable H∞ controller design for linear systems
Automatica (Journal of IFAC)
Brief Non-fragile H∞ control for linear systems with multiplicative controller gain variations
Automatica (Journal of IFAC)
Automatica (Journal of IFAC)
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The non-fragile reliable controller design problem for a dynamic interval system against actuator failures in the input channels and a given quadratic cost function is discussed. A sufficient condition is established such that the closed-loop system stability and cost function is guaranteed to be no more than a certain upper bound with all admissible uncertainties as well as actuator failures. A modified interval system described by matrix factorization will lead to less conservative conclusions. An effective linear matrix inequality (LMI) approach is developed to solve the addressed problem. Furthermore, a convex optimization problem is formulated to design the optimal non-fragile reliable guaranteed cost controller which minimizes the upper bound of the closed-loop system cost. The effectiveness of this approach has been verified on an aircraft angle control system design. Simulation results on a test example are presented to validate the proposed design approach.