Communication disturbance observer approach to control of integral plant with time delay

No Thumbnail Available

Date

2013

Authors

Emirler,M.T.
Guvenc,B.A.
Guvenc,L.

Journal Title

Journal ISSN

Volume Title

Publisher

Open Access Color

OpenAIRE Downloads

OpenAIRE Views

Research Projects

Organizational Units

Journal Issue

Abstract

The presence of time delay can cause stability problems in closed loop systems as it adds large negative phase angle to the system frequency response. The Smith predictor is a well-known method of dealing with fixed and known time delays in control systems. Errors in the knowledge of the time delay will cause degradation of the Smith predictor compensation performance. A solution to this problem is to use a communication disturbance observer. Time delayed integral plants are typical examples of open loop unstable systems with time delay. In this paper, the communication disturbance observer based time delay compensation method is applied to high order time delayed integral plants. A robust stability condition is derived for time delayed feedback control systems with the communication disturbance observer. The effect of the communication disturbance observer Q filter cut-off frequency selection on robust stability is investigated. Simulation results are presented for both constant and time varying delays to illustrate the effectiveness of the proposed communication disturbance observer approach. © 2013 IEEE.

Description

Keywords

disturbance observer, robust stability, time delay systems

Turkish CoHE Thesis Center URL

Fields of Science

Citation

5

WoS Q

Scopus Q

Source

2013 9th Asian Control Conference, ASCC 2013 -- 2013 9th Asian Control Conference, ASCC 2013 -- 23 June 2013 through 26 June 2013 -- Istanbul -- 100340

Volume

Issue

Start Page

End Page