Design of unknown input observer for linear time-delay systems

作者：Fu YM^*; Duan GR; Song SM

来源：International Journal of Control Automation and Systems, 2004, 2(4): 530-535.

• linear matrix inequalities
• Lyapunov stability
• stabilization
• time-delay systems
• unknown input observer

This paper deals with the unknown input observer (UIO) design problem for a class of linear time-delay systems. A case in which the observer error can completely be decoupled from an unknown input is treated. Necessary and sufficient conditions for the existences of such observers are present. Based on Lyapunov stability theory, thedesign of the observer with internal delay is formulated in terms of linear matrix inequalities (LMI). The design of the observer without internal delay is turned into a stabilization problem in linear systems. Two design algorithms of UIO are proposed. The effect of the proposed approach is illustrated by two numerical examples.

• 出版日期2004-12
• 单位哈尔滨工业大学