전기전자학회논문지 (Journal of IKEEE)

  • 제8권1호
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  • Pages.96-107
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  • 2004
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  • 1226-7244(pISSN)
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  • 2288-243X(eISSN)
한국전기전자학회 (Institute of Korean Electrical and Electronics Engineers)
권호 표지

로봇 매니플레이터를 위한 정확한 사전 결정 출력 성능을 갖는 새로운 적분 가변구조 레귤레이션 제어기

A New Integral Variable Structure Regulation Controller for Robot Manipulators with Accurately Predetermined Output Performance

  • 이정훈 (경상대학교 제어계측공학과)
  • Lee, Jung-Hoon (Department of Control and Instrumentation Eng. Gyeongsang National University)
  • 발행 : 2004.07.01
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⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서는 고도의 비선형 로봇 매니플레이터를 위한 새로운 적분 가변 구조 제어기를 설계하였다. 특수 적분 슬라이딩 면과 외란 관찰기를 이용한 사전 성능을 갖는 개선된 레귤레이션 제어이다. 어떠한 리칭 구간도 없이 주어진 초기조건부터 원점까지 슬라이딩 궤적을 정확히 사전 결정하기 위하여 특수한 초기 조건을 갖는 적분 변수를 갖는 슬라이딩 면이 채택되었다. 그리고 외란 관찰기를 사용한 연속 입력은 큰 계산 부하 없이 사전 추적오차 범위내의 사전에 결정된 슬라이딩 궤적을 추적하게 한다. 사전에 결정된 슬라이딩 궤적을 사전에 결정된 추적 오차의 성능은 슬라이딩 면의 값과 슬라이f딩 출력의 오차와 관계와 페루프 안정성과 함께 두 개의 정리를 통하여 명확히 검진되었다. 제안된 레귤레이션 제어기의 설계는 성능 설계와 강인성 설계로 각 독립 링크 상에 분리된다. 제안된 알고리즘의 유용성은 매개변수 불확실성과 페이로드 변동하의 이 축 로봇의 레귤레이션 제어에 대한 시뮬레이션 연구를 통하여 무 리칭 구간, 무 오버슈트, 사전 추적 오차를 갖는 사전 결정 출력, 용이한 출력 가변성, 설계 단계의 분리 등의 관점에서 입증되었다.

In this paper, a new integral variable structure regulation controller(IVSRC) is designed by using a special integral sliding surface and a disturbance observer for the improved regulation control of highly nonlinear robot manipulators with prescribed output performance. The sliding surface having the integral state with a special initial condition is employed in this paper to exactly predetermine the ideal sliding trajectory from a given initial condition to origin without any reaching phase. And a continuous sliding mode input using the disturbance observer is also introduced in oder to effectively follow the predetermined sliding trajectory within the prescribed accuracy without large computation burden. The performance of the prescribed tracking accuracy to the predetermined sliding trajectory is clearly investigated in detail through the two theorems together with the closed loop stability. The design of the proposed IVSRC is separated into the performance design and robustness design in each independent link. The usefulness of the algorithm has been demonstrated through simulation studies on the regulation control of a two link manipulator under parameter uncertainties and payload variations, in view of no reaching phase, no overshoot, predetermined response with prescribed accuracy, easy change of output performance, separation of design phase, and so on.

키워드

참고문헌

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