Robust damage-mitigating control of meclianicai systems: Experimental validation on a test apparatus

Hui Zhang, Asok Ray

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective is to demonstrate the concept of fatigue damage reduction as an extension of multivariable robust feedback control. The test apparatus is built upon a three-degree-of-freedom, two-input threeoutput mechanical structure. The methodology of the damage-mitigating control synthesis is built upon the principles of: (i) frequency-domain identification of the plant dynamics and modeling of uncertainties in the state-space setting; and (ii) robust control based on the H^ approach by taking both plant dynamic performance and material degradation of structural components into consideration. Case studies on the test apparatus indicate that fatigue life of specimens can be substantially extended with no appreciable degradation in the dynamic performance of the mechanical system.

Original languageEnglish (US)
Pages (from-to)377-385
Number of pages9
JournalJournal of Dynamic Systems, Measurement and Control, Transactions of the ASME
Volume121
Issue number3
DOIs
StatePublished - Sep 1999

Fingerprint

Robust control
damage
Degradation
Fatigue damage
degradation
Service life
Feedback control
Machinery
service life
fatigue life
machinery
experimentation
synthesis
feedback control
Fatigue of materials
Control systems
degrees of freedom
methodology
Uncertainty

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Information Systems
  • Instrumentation
  • Mechanical Engineering
  • Computer Science Applications

Cite this

@article{7ef517a462994a65b2573d19ff0ec880,
title = "Robust damage-mitigating control of meclianicai systems: Experimental validation on a test apparatus",
abstract = "The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective is to demonstrate the concept of fatigue damage reduction as an extension of multivariable robust feedback control. The test apparatus is built upon a three-degree-of-freedom, two-input threeoutput mechanical structure. The methodology of the damage-mitigating control synthesis is built upon the principles of: (i) frequency-domain identification of the plant dynamics and modeling of uncertainties in the state-space setting; and (ii) robust control based on the H^ approach by taking both plant dynamic performance and material degradation of structural components into consideration. Case studies on the test apparatus indicate that fatigue life of specimens can be substantially extended with no appreciable degradation in the dynamic performance of the mechanical system.",
author = "Hui Zhang and Asok Ray",
year = "1999",
month = "9",
doi = "10.1115/1.2802485",
language = "English (US)",
volume = "121",
pages = "377--385",
journal = "Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME",
issn = "0022-0434",
publisher = "American Society of Mechanical Engineers(ASME)",
number = "3",

}

TY - JOUR

T1 - Robust damage-mitigating control of meclianicai systems

T2 - Experimental validation on a test apparatus

AU - Zhang, Hui

AU - Ray, Asok

PY - 1999/9

Y1 - 1999/9

N2 - The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective is to demonstrate the concept of fatigue damage reduction as an extension of multivariable robust feedback control. The test apparatus is built upon a three-degree-of-freedom, two-input threeoutput mechanical structure. The methodology of the damage-mitigating control synthesis is built upon the principles of: (i) frequency-domain identification of the plant dynamics and modeling of uncertainties in the state-space setting; and (ii) robust control based on the H^ approach by taking both plant dynamic performance and material degradation of structural components into consideration. Case studies on the test apparatus indicate that fatigue life of specimens can be substantially extended with no appreciable degradation in the dynamic performance of the mechanical system.

AB - The goal of damage-mitigating control is to achieve high performance of operating machinery without overstraining the mechanical structures and the potential benefit is an increase in the component service life with no significant loss of performance. This paper presents the design of a test apparatus, the synthesis of a damage-mitigating control system, and the results of experimentation where the objective is to demonstrate the concept of fatigue damage reduction as an extension of multivariable robust feedback control. The test apparatus is built upon a three-degree-of-freedom, two-input threeoutput mechanical structure. The methodology of the damage-mitigating control synthesis is built upon the principles of: (i) frequency-domain identification of the plant dynamics and modeling of uncertainties in the state-space setting; and (ii) robust control based on the H^ approach by taking both plant dynamic performance and material degradation of structural components into consideration. Case studies on the test apparatus indicate that fatigue life of specimens can be substantially extended with no appreciable degradation in the dynamic performance of the mechanical system.

UR - http://www.scopus.com/inward/record.url?scp=0000588244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000588244&partnerID=8YFLogxK

U2 - 10.1115/1.2802485

DO - 10.1115/1.2802485

M3 - Article

AN - SCOPUS:0000588244

VL - 121

SP - 377

EP - 385

JO - Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME

JF - Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME

SN - 0022-0434

IS - 3

ER -