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Active fault-tolerant control for vehicle active suspension systems in finite-frequency domain

Active fault-tolerant control for vehicle active suspension systems in finite-frequency domain

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The problem of active fault-tolerant control for vehicle active suspension systems in finite-frequency domain is investigated. First, a linear model of vehicle active suspension systems is given. With an observer-based fault estimator, a new H∞ controller in generalised internal model control architecture is proposed. By using the Kalman–Yakubovich–Popov lemma, sufficient conditions ensuring simultaneous finite-frequency estimation and control performance are derived. In terms of the linear matric inequalities, fault compensation is also proposed. Finally, simulation results are given to illustrate the effectiveness of the proposed results.

Inspec keywords: observers; suspensions (mechanical components); fault tolerance; linear matrix inequalities; road vehicles; H∞ control

Other keywords: vehicle active suspension systems; H∞ controller; linear matrix inequalities; finite frequency domain; Kalman-Yakubovich-Popov lemma; observer based fault estimator; internal model control architecture; active fault tolerant control

Subjects: Linear algebra (numerical analysis); Control technology and theory (production); Numerical analysis; Optimal control; Mechanical components; Road-traffic system control; Simulation, modelling and identification

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