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Schlegel, M. and Mertl, J. and Čech, M. : Generalized robustness regions for PID controllers . Process Control ´03, p. 108-114, Slovac University of Technology, Bratislava, 2003.


The problem of design a fixed PID controller for several LTI models is recognized as one of the fundamental problem in control theory. Recently, interesting results concerning the parameterization of all PID controllers stabilizing a given system were published. In this paper, the systematic procedure for construction of robustness regions in the parameter plane of the PID controller is presented when we require that the open loop Nyquist plot does not have an intersection with a given general conic. Further, it is shown how use this procedure for design of the fixed PID controller for several process models simultaneously.

Detail of publication

Title: Generalized robustness regions for PID controllers
Author: Schlegel, M. ; Mertl, J. ; Čech, M.
Language: English
Date of publication: 8 Jun 2003
Year: 2003
Type of publication: Papers in proceedings of reviewed conferences
Title of journal or book: Process Control ´03
Page: 108 - 114
ISBN: 80-227-1902-1
Publisher: Slovac University of Technology
Address: Bratislava
Date: 8 Jun 2003 - 11 Jun 2003
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PID control, robustness design, simultaneous stabilization, parametric plane method


 author = {Schlegel, M. and Mertl, J. and \v{C}ech, M.},
 title = {Generalized robustness regions for PID controllers},
 year = {2003},
 publisher = {Slovac University of Technology},
 journal = {Process Control ?03},
 address = {Bratislava},
 pages = {108-114},
 ISBN = {80-227-1902-1},
 url = {},