• 제목/요약/키워드: Eigenstructure

검색결과 80건 처리시간 0.027초

좌 고유구조 지정기법을 이용한 고장분리 필터 설계 (Fault Isolation Filter Design Using Left Eigenstructure Assignment Scheme)

  • 최재원;이대영
    • 제어로봇시스템학회논문지
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    • 제4권6호
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    • pp.695-702
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    • 1998
  • In this paper, we propose a novel fault isolation filter design method using the left eigenstructure assignment scheme proposed by Choi et. al., The proposed filter shows good fault isolation performance with exact eigenstructure assignment. An eigenstructure assignment methodology which satisfies the required fault isolation conditions is also proposed. The proposed method guarantees that the corrupted m simultaneous faults can be isolated when the number of available output measurements are (m+1).

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최적화 기법을 이용한 외란 억제 및 고장 분리에 대한 고유구조 지정 (Eigenstructure Assignment Using Optimization Method for Disturbance Suppression and Fault Isolation)

  • 서영봉;최재원
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.14-14
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    • 2000
  • In this paper, we present a systematic optimization method that has flexibility of exact assignment of eigenstructure with disturbance suppression and fault isolation capability. The eigenstructure for fault isolation is assigned by the inclusion of a eigenstructure assignment problem in the objective function as well as a disturbance suppression term is also included in the objective function enhance the robustness of the control scheme. The proposed scheme is applied to designing asimple system to confirm the usefulness of the scheme.

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선형 다변수 시스템에 대한 Eigenstructure Assignment (Eigenstructure Assignment for Linear Multivariable Systems)

  • 권봉환;윤명중
    • 대한전자공학회논문지
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    • 제24권2호
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    • pp.215-222
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    • 1987
  • This paper generalizes the previous results of the closed-loop eigenstructure assignment via output feedback in linear multivariable systems. Necessary and sufficient conditions for the closed-loop eigenstructure assignment by output feedback are presented. Some known results on entire eigenstructure assignment are deduced from this results.

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유연 고유구조 지정기법 : 최적화 접근법 (Flexible Eigenstructure Assignment : An Optimization Approach)

  • 최재원;김신종;서영봉
    • 제어로봇시스템학회논문지
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    • 제7권8호
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    • pp.641-646
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    • 2001
  • Eigenstructure assignment is a typical method with the capability of consideration of the time-domain specifications in designing a linear control system. In this paper, we propose a new method for eigenstructure to achieve desired eigenvectors more precisely than with the conventional method. In the proposed method, the conventional eigenstructure assignment problem is interpreted as a constrained optimization one, and it converted into an unconstrained optimization problem to deal with the problem easily. Numerical examples are presented to illustrate the proposed flexible eigenstructure assignment method.

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외란이 있는 동적시스템의 고유구조지정 제어 기법 (Eigenstructure Assignment Method for a Dynamical System with Unknown Disturbances)

  • 최재원;홍금식;이만형;양경진
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 추계학술대회 논문집
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    • pp.230-235
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    • 1996
  • Eigenstructure (eigenvalues/eigenvectors) assignment has been shown to be a useful tool for flight control system design. In the sense of the eigenstructure assignment, the effectiveness and disturbance suppressibility of a controller depend mainly on the left eigenstructure (eigenvalues/left eigenvectors) of a system. On the other hand, the disturbance decouplability is governed by the right eigenstructure (eigenvalues/right eigenvectors) of the system. In this paper, in order to obtain a disturbance decouplable as well as effective and disturbance suppressible controller, a concurrent assignment methodology of the left and right eigenstructures is proposed. The biorthogonality condition between the left and right modal matrices of a system as well as the relations between the achievable right modal matrix and state selection matrices are used to develop the methodology. The proposed concurrent eigenstructure assignment methodology guarantees that the desired eigenvalues are achieved exactly and the desired left and right eigenvectors are assigned to the best possible(achievable) sets of eigenvectors in the least square sense, respectively. The proposed design methodology is applied to designing a lateral flight control system for an L-1011 aircraft with disturbances.

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상태되먹임에 의한 동시고유구조 지정 기법 (A concurrent eigenstructure assignment method by state feedback)

  • 최재원;이장규;김유단;강태삼
    • 제어로봇시스템학회논문지
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    • 제1권1호
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    • pp.4-12
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    • 1995
  • In the sense of eigenstructure (eigenvalues/eignenvectors) assignment, the effectiveness and disturbance suppressibility of a controller depend mainly on the left eigenstructure (eignevalues/left eigenvectors) of a system. On the other hand, the disturbance decouplability is governed by the right eigenstructure (eignevalues/right eigenvectors) of the system. In this paper, in order to obtain a disturbance decouplable as well as effetive and disturbance suppressible controller, a concurrent assignment methodology of the left and right eigenstructure is proposed. The biorthogonality condition between the left and right modal matrix and state selection matrices are used to develop the methodology. The proposed concurrent eigenstructure assignment methodology guarantees that the desired eigenvalues are achieved exactly and the desired left and right eigenvectors are assigned to the best possible (achievable) sets of eigenvectors in the least square sense, respectively. A numerical example is presented to illustrate the validity and usefulness of the proposed methodology.

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고유공간지정법과 LQR제어기법과의 관계 연구 (The study on the relations between LQR and eigenstructure assignment)

  • 김희섭;김유단
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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    • pp.1091-1094
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    • 1996
  • The Object of this study is to find the relations between LQR and eigenstructure assignment regulator. Algorithms for computing weighting matrices are proposed for the case that (i) closed-loop eigenvalues are specified, and (ii) closed-loop gain matrix is given. We also present a new eigenstructure assignment algorithm that minimizes a linear quadratic performance index.

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좌 고유구조지정 기법을 이용한 견실 고장 분리 필터 설계 (Design of a Robust Fault Isolation Filter Using Left Eigenstructure Assignment Scheme)

  • 이대영;최재원
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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    • pp.85-85
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    • 2000
  • In this paper, we propose a novel robust fault isolation filter design method using the left eigenstructure assignment scheme proposed b\ulcorner author. An eigenstructure assignment methodology that satisfies the required fault isolation conditions is also proposed. The proposed method guarantees that the corrupted ${\gamma}$ simultaneous faults can be isolated when the numbers of available output measurements are ${\gamma}$.

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고유구조 지정 기능을 갖는 LQR 설계및 비행제어시스템에의 응용 (LQR/Eigenstructure assignment design with an application to a flight control system)

  • 최재원;서영봉
    • 제어로봇시스템학회논문지
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    • 제4권3호
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    • pp.280-288
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    • 1998
  • In this paper, a novel relation between the weighting matrix Q in LQR and the eigenstructure of the desired closed-loop system is proposed. Thus, the state feedback gain with the desired eigenstructure in the LQR can be obtained. The proposed scheme is applied to design a simple 3rd-order system and a flight control system design to show the usefulness of the scheme.

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Eigenstructure Assignment Considering Probability of Instability with Flight Control Application

  • Seo, Young-Bong;Choi, Jae-Weon
    • International Journal of Control, Automation, and Systems
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    • 제5권6호
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    • pp.607-613
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    • 2007
  • Eigenstructure assignment provides the advantage of allowing great flexibility in shaping the closed-loop system responses by allowing specification of closed-loop eigenvalues and corresponding eigenvectors. But, the general eigenstructure assignment methodologies cannot guarantee stability robustness to parameter variations of a system. In this paper, we present a novel method that has the capability of exact assignment of an eigenstructure which can consider the probability of instability for LTI (Linear Time-Invariant) systems. The probability of instability of an LTI system is determined by the probability distributions of the closed-loop eigenvalues. The stability region for the system is made probabilistically based upon the Monte Carlo evaluations. The proposed control design method is applied to design a flight control system with probabilistic parameter variations to confirm the usefulness of the method.