Robust compensation of a chattering time-varying input delay with jumps. (June 2018)

• Record Type: Journal Article
• Authors: Bresch-Pietri, Delphine; Mazenc, Frédéric; Petit, Nicolas
• Is Part Of: Automatica. Volume 92(2018)
• Page Start: 225
• Page End: 234
• Publication Date: 2018-06
• Subjects: Delay systems -- Distributed parameter systems -- Reduction method -- Prediction-based control -- Time-varying delay -- Hybrid systems; Automatic control -- Periodicals; Automation -- Periodicals; 629.805
• DOI: 10.1016/j.automatica.2018.03.058
• Languages: English
• ISSNs: 0005-1098

Abstract

Abstract: We investigate the design of a prediction-based controller for a linear system subject to a time-varying input delay, not necessarily First-In/First-Out (FIFO). This means that the input signals can be reordered. The feedback law uses the current delay value in the prediction. It does not exactly compensate for the delay in the closed-loop dynamics but does not require to predict future delay values, contrary to the standard prediction technique. Modeling the input delay as a transport Partial Differential Equation, we prove asymptotic stabilization of the system state, that is, robust delay compensation, providing that the average ℒ 2 -norm of the delay time-derivative over some time-window is sufficiently small and that the average time between two discontinuities (average dwell time) is sufficiently large.