Universiti Teknologi Malaysia Institutional Repository

Stability analysis and compensation of time delays in analog control systems

Mirzal, Andri (2012) Stability analysis and compensation of time delays in analog control systems. International Journal of Control and Automation, 5 (4). pp. 1-18. ISSN 2005-4297

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Abstract

Time delays, also known as transport lag, dead time or time lag, are components that hold signal flow off inside the systems. They arise in physical, chemical, biological and economic systems, as well as in the processes of measurement and computation. Time delays can be approximated using polynomial series to allow the systems be analyzed in the same manner as the non time-delay systems. In this paper, we study the influences of delay components to system’s stability, derive the Nyquist stability criterion for time-delay systems and use it to analyze stability of the systems, and utilize some polynomial series to approximate the delays and examine their performances. Moreover we study PID controller as delay compensation scheme using two tuning methods: the “iterative method” and Ziegler-Nichols method.

Item Type:Article
Uncontrolled Keywords:delay compensation, Nyquist stability criterion, PID controller
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Computer Science and Information System
ID Code:47532
Deposited By: Narimah Nawil
Deposited On:22 Jun 2015 05:56
Last Modified:29 Feb 2020 13:10

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