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Introduction

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Stability Analysis and Robust Control of Time-Delay Systems

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Abstract

In many physical and biological phenomena, the rate of variation in the system state depends on past states. This characteristic is called a delay or a time delay, and a system with a time delay is called a time-delay system. Timedelay phenomena were first discovered in biological systems and were later found in many engineering systems, such as mechanical transmissions, fluid transmissions, metallurgical processes, and networked control systems. They are often a source of instability and poor control performance. Time-delay systems have attracted the attention of many researchers [1–3] because of their importance and widespread occurrence. Basic theories describing such systems were established in the 1950s and 1960s; they covered topics such as the existence and uniqueness of solutions to dynamic equations, stability theory for trivial solutions, etc. That work laid the foundation for the later analysis and design of time-delay systems.

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© 2010 Science Press Beijing and Springer-Verlag Berlin Heidelberg

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(2010). Introduction. In: Stability Analysis and Robust Control of Time-Delay Systems. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03037-6_1

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