NDLI: Qualitative Robustness and Its Role in the Robust Control of Uncertain Engineering Systems

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Devarakonda, Nagini Rama, K. Yedavalli
Copyright Year	2011
Abstract	This paper addresses the issue of robustness of linear uncertain systems. In addition to the conventional notion of robustness based on quantitative information, in this paper, a new and novel perspective of qualitative robustness is introduced. The qualitative robustness measure is inspired by ecological principles and is based on the nature of interactions and interconnections of the system. Thus, using the proposed framework, the robustness of engineering systems can be assessed both from quantitative as well as qualitative information. This type of analysis from both viewpoints sheds considerable insight on the desirable nominal system in engineering applications. Using these concepts it is shown that a specific quantitative set of matrices labeled ‘Target Sign Stable Matrices’ are the best nominal matrices. These concepts are then extended to closed loop control systems and problem of control design and for ease in design a new set of matrices ‘Target Pseudosymmetric Matrices’ are introduced which enhance the class of desirable closed loop system matrices. Examples are included to illustrate these concepts.
Sponsorship	Dynamic Systems and Control Division
Starting Page	651
Ending Page	658
Page Count	8
File Format	PDF
ISBN	9780791854754
DOI	10.1115/DSCC2011-6163
Volume Number	ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 1
Conference Proceedings	ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control
Language	English
Publisher Date	2011-10-31
Publisher Place	Arlington, Virginia, USA
Access Restriction	Subscribed
Subject Keyword	Robust control Design Uncertain systems Control systems Robustness Closed loop systems Engineering systems and industry applications
Content Type	Text
Resource Type	Article

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