Level Crossing Sampling in Feedback Stabilization under Data-Rate Constraints

• Published in: Proceedings of the 45th IEEE Conference on Decision and Control pp. 4423 - 4428
• Main Authors: Kofman, E., Braslavsky, J.H.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.12.2006
• Subjects: Communication system control; Control design; Control systems; Delay effects; Emulation; Feedback communications; Hysteresis; Open loop systems; Quantization; Sampling methods
• ISBN: 9781424401710; 1424401712
• ISSN: 0191-2216
• DOI: 10.1109/CDC.2006.377483

This paper introduces a novel event-driven sampled-data feedback scheme where the plant output samples are triggered by the crossings - with hysteresis - of the signal through its quantization levels. The plant and controller communicate over binary channels that operate asynchronously and are assumed to be error and delay-free. The paper proposes two systematic output feedback control design strategies. The first strategy consists in the digital emulation of a previously designed analog controller. The second strategy is a simple direct design that drives the plant state to the origin in finite time after a total transmission of 2n + 2 bits, where n is the order of the plant