在網(wǎng)絡化控制系統(tǒng)中，由于傳感器和執(zhí)行器分布很廣而且數(shù)據(jù)包容量有限，多包傳輸
不可避免。多包傳輸影響網(wǎng)絡化控制系統(tǒng)的穩(wěn)定性，甚至引起系統(tǒng)失穩(wěn)。研究了傳感器采用時間驅(qū)動方式，控制器和執(zhí)行器采用事件驅(qū)動方式的網(wǎng)絡化控制系統(tǒng)的多包傳輸問題。 采用狀態(tài)反饋控制器穩(wěn)定系統(tǒng)并提高系統(tǒng)的動態(tài)性能；利用增廣狀態(tài)向量的方法，建立了網(wǎng)絡化控制系統(tǒng)的異步動態(tài)系統(tǒng)模型；運用異步動態(tài)系統(tǒng)理論和李雅普諾夫方程，分析了網(wǎng)絡化控制系統(tǒng)指數(shù)穩(wěn)定問題，得到了系統(tǒng)的穩(wěn)定性判定定理。
關鍵詞：網(wǎng)絡化控制系統(tǒng)；多包傳輸；異步動態(tài)系統(tǒng)；時間-事件-事件驅(qū)動方式
Abstract: The multiple-packet transmission in networked control systems is inevitable because a data packet contains limited information, and the sensors and actuators are extensively distributed. It degrades the system stability and even makes the system unstable. The multiple-packet transmission in networked control systems was investigated, in which the sensors were time-driven, the controller and actuators were event-driven. This paper employed a state feedback controller to stabilize the system and improve the system dynamic performance, utilized an augmented state vector method to establish the asynchronous dynamical system model, and used the asynchronous dynamical system theory and a Lyapunov function to analyze the exponential stability for the networked control systems and obtain the stability theorem.
Key words: Networked control systems; Multiple-packet transmission; Asynchronous dynamical systems; TEE