Event-Triggered Dynamic Quantization for Nonlinear Systems With One-Bit Data Transmission

• 成果类型: Article
• 署名作者: Almakhles, Dhafer; Abdelrahim, Mahmoud
• 署名单位: Prince Sultan University; Egyptian Knowledge Bank (EKB); Assiut University
• 刊物名称: IEEE TRANSACTIONS ON AUTOMATIC CONTROL
• ISSN/ISSBN: 0018-9286
• DOI: 10.1109/TAC.2023.3347686
• 发表日期: 2024
• 页码: 4118-4125
• 关键词: Quantization (signal); stability analysis; Output feedback; Decoding; Data communication; asymptotic stability; Tuning; Dynamic quantization; event-triggered control; networked control systems; Nonlinear systems

摘要

In this article, we study the problem of output feedback control for nonlinear systems under event-triggered implementation and dynamic quantization. We focus on the case where the initial output measurement is unknown and we propose a novel dynamic quantization policy to capture the output in a finite time. Next, the event-triggering mechanism that we design relies on a dynamic variable, which allows for reducing the amount of transmissions over the network. The dynamic quantizer is binary in the sense that the quantized output signal can be transmitted by using only a single bit. The encoding-decoding mechanism is provided in a systematic way such that the encoder-decoder pair realize a matching information on the quantized signal. The combined event-triggering condition and the dynamic quantizer guarantee asymptotic stability property for the closed-loop system. The Zeno behavior is prevented by means of the time-regularization technique. The efficiency of the proposed method is demonstrated on a numerical example.