Presentation of a New Online Method, for Time Variant and Unknown Input Time Delay Estimation, in Continuous SISO-LTI Systems
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Published:2020-12
Issue:6
Volume:10
Page:935-944
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ISSN:2210-3279
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Container-title:International Journal of Sensors, Wireless Communications and Control
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language:en
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Short-container-title:SWCC
Author:
Nejad Hadi Chahkandi1ORCID,
Farshad Mohsen1ORCID,
Havangi Ramazan1ORCID
Affiliation:
1. Department of Electrical and Computer Engineering, University of Birjand, Birjand,Iran
Abstract
Aims:
In this paper, a novel estimator is presented, for online time delay estimation, in
single input-single output LTI systems, with time variant and uncertain delay in control input.
Background :
The main studies made on systems with time-varying delay are divided into three
general categories: (1) Identification and estimation of the delay. (2) Criteria presented for stability
and robust stability. (3) Control methods presented with goals like tracking.
Objective:
It is obvious that Laplace transfer function of a delayed system includes a time delay
factor (exponential and non-rational). In this study, it is assumed that the only uncertain and time
varying parameter in the system is the system’s time delay. The objective of this paper is to online
estimate of this time delay.
Methods:
Simulations were made on a sample system with input time delay, for different types of
time delay signal.
Results:
Finally, simulations results show rather desirable performance of the proposed estimator
in dealing with time varying and uncertain delays.
Publisher
Bentham Science Publishers Ltd.
Subject
Electrical and Electronic Engineering,Control and Optimization,Computer Networks and Communications,Computer Science Applications
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