• Proceedings of the KIEE Conference
• /
• 2008.10b
• /
• pp.179-180
• /
• 2008

본 논문에서는 극배치(pole placement) 제어 시스템의 상태들에 의해서 훈련된 신경 회로망(Neural Network)을 기반으로 새로운 슬라이딩 평면의 설계 기법을 제안한다 훈련된 데이더를 가진 신경 회로망은 배치 제어의 성능을 가지며 새로운 슬라이딩 평면을 설계하는데 사용되어 진다. 그 결과 시스템의 파라미터 불확실성이 존재하더라도 제안된 슬라이딩 평면으로서 슬라이딩 모드 제어의 강인성이 신경회로망을 통한 극배치제어의 성능에 추가되는 것이 가능하다.

• The Transactions of the Korean Institute of Electrical Engineers
• /
• v.41 no.3
• /
• pp.311-319
• /
• 1992

In this paper, a direct adaptive pole placement controller for an unknown linear time-invariant single-input single-output nonminimum phase plant is proposed. To design this direct adaptive pole placement controller, the auxiliary signals are introduced. Consequently, a linear equation error model is formulated for estimating both the controller parameters and the additional auxiliary parameters. To estimate the controller parameters and the additional auxiliary parameters, the exponentially weighted least-squares algorithm is implemented, and a method of selecting the characteristic polynomials of the sensitivity function filters is proposed. In this method, all the past measurement data are weighted exponentially. A series of simulations for a nonminimum phase plant is presented to illustrate some features of both the parameter estimation and the output response of this adaptive pole placement controller.

• Journal of the Institute of Electronics Engineers of Korea SC
• /
• v.40 no.5
• /
• pp.317-325
• /
• 2003

The vibration, which often occurred in a two inertia motor system, makes it difficult to achieve a quick response of speed and disturbance rejection. This paper provides an autonomous pole assignment technique for three kinds of speed controllers (I-P, I-PD, and State feedback) using GAs(Genetic Algorithms) for a two-inertia motor system. Firstly, the optimal parameters are chosen using GAs in view of reducing overshoot and settling time, then those are used in computing the gains of each controller. Some simulation results verify the effectiveness of the proposed design. The proposed controller is expected to be the autonomous design way for controlling a two-inertia motor system with flexible shaft.

• Journal of Institute of Control, Robotics and Systems
• /
• v.1 no.1
• /
• pp.13-19
• /
• 1995

In this paper, generalized singular value is defined. Using the generalized singular value, robust stability conditions and robust pole placement conditions of structured uncertain systems with star shaped uncertainties are derived. Especially, norm bounded and polytopic uncertainty regions are considered as star shaped uncertainty regions. Linear matrix inequality problems are proposed in order to compute the upper bound of the generalized singular value. The proposed linear matrix inequality problems can be solved by using the convex optimization method.

• Proceedings of the KIEE Conference
• /
• 1986.07a
• /
• pp.123-127
• /
• 1986

• 제어로봇시스템학회:학술대회논문집
• /
• 1988.10a
• /
• pp.452-456
• /
• 1988

A PID controller must need not only good servo response but also little operation of a control valve. We suggest a direct pole-placement PID self-tuning algorithm using the structure of derivative-of-output controller and Bezout identity. This algorithm can much reduce the change of output of controller and well follow the desired trajectory.

• Proceedings of the KIEE Conference
• /
• 2008.10b
• /
• pp.75-76
• /
• 2008

이산시간 모델로부터 시간응답 설계 명세를 만족시키도록 직접 디지털 제어기를 설계하는 새로운 방법을 제시한다 R-S-T형의 고정된 제어기 구조에서 폐루프 전달함수가 원하는 기준전달함수와 일치하도록 제어기 이득을 구한다. 시간 응답을 만족시키는 목표전달함수는 w-영역에서 CRA를 이용하여 선택되며 이 함수를 z-영역으로 변환시켜 얻는다. 예제를 통해 제시한 방법의 유용성을 보이고 극배치 방식과 비교한다.

• Journal of Institute of Control, Robotics and Systems
• /
• v.5 no.1
• /
• pp.11-15
• /
• 1999

In this paper, a robust pole placement controller for time invariant linear systems with polytopic uncertainties is presented. The proposed controller is a fixed order output feedback controller which stabilizes the uncertain systems and satisfies the constraints on the closed-loop pole location. The proposed controller can be obtained by minimizing a certain nonlinear object function subject to linear matrix inequality constraints. An algorithm for solving the nonlinear optimization problem is also proposed.

• Journal of Institute of Control, Robotics and Systems
• /
• v.15 no.3
• /
• pp.249-254
• /
• 2009

This paper studies the problem of pole placement by an LQ controller for system having two distinct real poles. Using the so-called Pole's Moving Range (PMR) drawn in the s-plane and relational equations between closed-loop system poles and weighting matrices, we calculate the state weighting matrix to move two distinct real poles to a pair of complex poles. By numerical examples, we show that the proposed method is applied to improve system performance.

• Proceedings of the Korean Institute of Intelligent Systems Conference
• /
• 2000.11a
• /
• pp.145-148
• /
• 2000

근래 퍼지 제어 시스템의 설계는 대부분 Takagi-Sugeno 퍼지 모델에 기반하여 행해지고 있다. 이러한 TS퍼지 모델은 각 규칙의 결론부에 선형 상태 방정식의 형태를 위하고 있는데 각각의 상태 방정식은 원 비선형 시스템으로부터 얻어지고 있다. 하지만 시스템이 복잡해지고 비선형성이 강하면 TS퍼지 모델을 얻는데도 어려움이 따른다. 이에 본 논문에서는 TS퍼지 모델을 얻기 위한 한가지 방법을 제안한다. 먼저 시스템을 선형항과 비선형항으로 나누어 비선형항을 선형화하여 퍼지 모델화 하는 일련의 과정에 한가지 법칙을 도입하게 된다. 이렇게 얻어진 퍼지 모델을 기반으로 한 제어에는 많은 연구가 있었으며 본 논문에서는 극배치 방법을 이용한다. 마지막으로 모의 실험을 통하여 제안된 방법의 효용성을 검증한다.