Stabilization of switched time-delay systems with only unstable subsystems: a new approach based on a vibration model of 1.5 degrees of freedom

A new approach for observer-based feedback control of time-delay systems is developed. Time-delays in systems lead to characteristic equations of infinite dimension, making the systems difficult to handle with classical control methods. In this paper, a recently developed approach, based on the Lambert W function, is used to address this difficulty and to control time-delay systems by designing an observer-based state feedback controller via eigenvalue assignment. The designed observer provides estimation of the state, which converges asymptotically to the actual state, and is then used for state feedback control. The feedback controller and the observer take simple linear forms and, thus, are easy to implement when compared to nonlinear methods. This new approach is applied, for illustration, to the control of a diesel engine to achieve improvement in fuel efficiency and reduction in emissions. The simulation results show excellent closed-loop performance.

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A new approach model validation: Application to time delay systems

IFAC Proceedings Volumes ◽

10.1016/s1474-6670(17)36944-6 ◽

2000 ◽

Vol 33 (23) ◽

pp. 209-212

Author(s):

J.C. Carmona ◽

V.M. Alvarado

Keyword(s):

Time Delay ◽

Model Validation ◽

Delay Systems ◽

Time Delay Systems ◽

New Approach

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