• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.1862-1866
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• 2003

A control system design with Coefficient Diagram Method (CDM) is proven that effective for SISO control design. But the control system design for MIMO via CDM is not concrete procedure. In this paper presents the control system design method for quadruple-tank process via CDM. By using the decentralized method for both non-minimum phase and minimum phase are made. The results from Integral-Proportional (I-P) controller’s design via CDM and standard Proportional-Integral (PI) controls are also shown to compare the merits of the proposed controllers.

• Journal of information and communication convergence engineering
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• 제6권4호
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• pp.421-424
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• 2008

In torque transmission system, we must suppressed vibration for Accuracy characteristic response of motor, Therefore, vibration suppression factor is very important motor control. To suppress vibration, a various control method has been proposed. Specially, one method of vibration suppression used disturbance observer filter. This method is torsion torque passing disturbance observer filter. By the estimated torsion torque feedback, vibration can be suppressed. The CDM(coefficient diagram method) is used to design the filter and Proportional controller. But using coefficient diagram method, not adapted controller parameter in disturbance. For this solution, we used fuzzy controller for auto tuning controller parameter. We proved this approach is confirmed by simulation.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.262-267
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• 2004

This paper is concerned with a design method of two-degree-of-freedom controller by Coefficient Diagram Method (CDM). The two-degree-of-freedom control system satisfies both of tracking and disturbance rejection performances, but requires tuning of many parameters. By the proposed design method, these parameters can be obtained properly without any adjustment. Furthermore, the tracking and disturbance rejection performances can be simultaneously designed. The effectiveness of the proposed method is demonstrated by the simulation.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2000년도 추계학술대회 학술발표 논문집
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• pp.353-360
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• 2000

A design of PIDA(Proportional-Integral-Derivative-Acceleration) controller for the third-order plant using the CDM(Coefficient Diagram Method) is presented. Using CDM, the closed-loop system with the designed PIDA controller can be made stable and satisfied both the transient and steady state response specifications without any adjustment. The effect of output step disturbance can also be lastly rejected. The fast step response of the controlled system can be achieved by reducing the equivalent time constant. The MATLABs simulation results show that the performances of the designed controlled system using CDM is better than the performance of the controlled system using PIDA controller designed by its own technique.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.256-261
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• 2004

This paper presents a simple two-degree of freedom PID tuning table based on the CDM design method. The structure of the control system will be composed of plant, P or PI or PID controller and a pre-filter. The finalized formula can be used based on the experimental test of the plant in the same manner as the Ziegler-Nichols' second method. That is; users just need to find the critical gain and critical period experimentally and the parameters of the P, PI or PID controller with the pre-filter can be obtained by substituting the values of critical gain and critical period in the tuning table. The simulation results of the control systems utilizing the proposed controllers compared with those using the Ziegler-Nichols' second method will also be demonstrated.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부 B
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• pp.417-419
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• 1998

The ICD(Individual-Channel-Design) is a multivariable control design method based on the classical frequence response, in which the channel decomposition and the loop shaping on frequence domain are introduced. However, in this manner, it is difficult to satisfy time domain specifications such as overshoot, rise time, settling time. To solve the problem, we propose a new design method using CDM(Coefficient Diagram Method). And a new feedforward compensator is introduced for reducing interconnections.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2002년도 ICCAS
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• pp.83.1-83
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• 2002

$\textbullet$ Introduction $\textbullet$ Control System Structure $\textbullet$ Coefficient Diagram Method $\textbullet$ Controller Design $\textbullet$ Experimental Results $\textbullet$ Conclusions

• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 추계학술대회 논문집 학회본부 D
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• pp.682-685
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• 2000

In this paper, Using CDM(Coefficient Diagram Method), we set target polynomial constraints and design 4-PID controller which have different structures such as Textbook PID-controller, Derivative of output PID-controller, set point of I only controller(I-PD controller) and PI controller followed by lag network(PI lag network controller) were tested by simulations. The plant we used are that used in IFAC 93 benchmark test. A controller designer, using CDM could use these results to select the controller's structure which is the best one fer him.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1998년도 제13차 학술회의논문집
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• pp.395-400
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• 1998

A design of PIDA (Proportional-Integral-Derivative-Acceleration) controller for the third-order plant using the CDM (Coefficient Diagram Method) is presented. Using CDM, the closed-loop system with the designed PIDA controller can be made stable and satisfied both transient and steady state response specifications without any adjustment. The effect of output step disturbance can also be lastly rejected. The fast step response of the controlled system can be achieved by reducing the equivalent time constant. The MATLAB's simulation results show that the performances of the designed controlled system using CDM is better than the performances of the controlled system using PIDA controller designed by its own technique.

• 융합신호처리학회논문지
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• 제4권3호
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• pp.55-60
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• 2003

위치제어 시스템이나 속도제어 시스템의 제어기 설계에서는 항상 기계적인 시스템의 유연성이 고성능에 대한 제약요소로 작용한다. 회전축으로 연결된 대부분의 기계적 시스템은 자체 회전자 관성과 부하 관성으로 이루어진 2관성 시스템이며, 이들 관성에 의해 회전축에는 비틀림이 발생한다. 이들 비틀림 현상은 회전 맥동 및 진동을 발생한다. 비틀림 진동을 억제하기 위하여 많은 연구가 행해져 왔다. 본 연구에서는 CDM을 이용하여 전압제어형 직류전동기 2관성 시스템의 속도제어기를 설계한다. 먼저 CDM을 적용한 제어기 설계가 용이하도록 전압제어형 직류전동기 2관성 시스템의 모델을 구한다. 그 후 CDM 표준형을 적용한 적정한 제어기를 설계한다. 설계된 속도제어 시스템은 시뮬레이션과 실험을 통하여 그 타당성이 검토된다.