access icon free Robust static output-feedback controller design against sensor failure for vehicle dynamics

This study deals with the design of a robust fault estimation and fault-tolerant control for vehicle lateral dynamics subject to external disturbance and unknown sensor faults. Firstly, a descriptor state and fault observer is designed to achieve the system state and sensor fault estimates simultaneously. Secondly, based on the information of on-line fault estimates, a robust fault-tolerant controller based on static output-feedback controller (SOFC) design approach is developed. To provide linear matrix inequalities of less conservatism, the results are conducted in the non-quadratic framework dealing with unmeasurable premise variables case. Simulation results show the effectiveness of the proposed control approach when the vehicle road adhesion conditions change and the sideslip angle is unavailable for measurement.

Inspec keywords: control system synthesis; feedback; observers; vehicle dynamics; fault tolerant control; linear matrix inequalities; sensors; robust control

Other keywords: SOFC design; fault observer; robust fault estimation; descriptor state; vehicle dynamics; linear matrix inequalities; robust static output feedback controller design; fault-tolerant control; sensor failure

Subjects: Algebra; Sensing devices and transducers; Transportation system control; Algebra; Vehicle mechanics; Transducers and sensing devices; Stability in control theory; Algebra; Transportation; Simulation, modelling and identification; Control system analysis and synthesis methods

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