A fault tolerant control scheme based on sensor–actuation channel switching and dwell time†

SUMMARY The present paper proposes a switching control scheme for a plant with multiple sensor–estimator/control–actuator pairs. The scheme is shown to handle the specific stability problems originated by the switching between the different feedback loops and accommodate to faults in the measurement (sensors) channels. The main contribution is a fault tolerant switching scheme with stability guarantees assured by a pre-imposed dwell time. The detection and the fault tolerance capabilities are achieved through the separation of sets associated with suitable residual signals corresponding to healthy and faulty functioning. Another contribution of the paper resides in a recovery technique for the post-fault reintegration of the biased estimations. This technique makes use of a virtual sensor whose associated estimation, based on an optimization procedure, minimizes the recovery time. Copyright © 2012 John Wiley & Sons, Ltd.

[1]  Peter Fogh Odgaard,et al.  Fault isolation in parallel coupled wind turbine converters , 2010, 2010 IEEE International Conference on Control Applications.

[2]  Nathan van de Wouw,et al.  Reconfigurable control of piecewise affine systems with actuator and sensor faults: Stability and tracking , 2011, Autom..

[3]  José A. De Doná,et al.  Fault-Tolerant Switching Scheme with Multiple Sensor-Controller Pairs , 2008 .

[4]  José A. De Doná,et al.  Multisensor switching control strategy with fault tolerance guarantees , 2008, Autom..

[5]  José A. De Doná,et al.  Positive invariant sets for fault tolerant multisensor control schemes , 2010, Int. J. Control.

[6]  José A. De Doná,et al.  A fault tolerant control scheme based on sensor-actuation channel switching and dwell time , 2010, 49th IEEE Conference on Decision and Control (CDC).

[7]  José A. De Doná,et al.  Necessary and Sufficient Conditions for Sensor Recovery in a Multisensor Control Scheme , 2009 .

[8]  Jan M. Maciejowski,et al.  MPC fault-tolerant flight control case study: flight 1862 , 2003 .

[9]  Jan H. Richter,et al.  Reconfigurable Control of Nonlinear Dynamical Systems , 2011 .

[10]  Karl-Erik Årzén,et al.  Trends in software and control , 2003 .

[11]  G. Stein,et al.  Respect the unstable , 2003 .

[12]  Patrizio Colaneri.  Dwell time analysis of deterministic and stochastic switched systems , 2009, 2009 European Control Conference (ECC).

[13]  David Q. Mayne,et al.  Invariant approximations of the minimal robust positively Invariant set , 2005, IEEE Transactions on Automatic Control.

[14]  E. Gilbert,et al.  Theory and computation of disturbance invariant sets for discrete-time linear systems , 1998 .

[15]  J. Lunze,et al.  Diagnosis of Linear Systems with Structured Uncertainties based on Guaranteed State Observation , 2008 .