• Title/Summary/Keyword: Auto-tuning Control

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Auto-Tuning PI control using limitted step response for brushless DC motor speed control (브러시리스 직류전동기 속도 제어를 위한 한계스텝응답 특성을 이용한 Auto-tuning PI 제어)

  • 전장현;전인효최중경박승엽
    • Proceedings of the IEEK Conference
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    • 1998.06a
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    • pp.203-206
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    • 1998
  • This paper describes the procedure of getting information about auto-tuning of PID regulator by the injection of high step input, called limited input, during a transient time of control. The key point is that system identification and control could be continuously executed. This means that the system information obtained by limited input despite of system uncertainty can be continuously applied to the PI regulator. Simulation and experiment result of brushless DC motor system having monotone increasing step response demonstrate the usefulness of proposed auto-tuning algorithm.

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Research of Fuzzy Auto gain tuning control to apply actuator controller of Unmaned Aerial Vehicle (무인항공기 작동기 컨트롤러를 위한 퍼지 자동 이득 조정 PID 제어 연구)

  • Kim, Tae-Wan;Baek, Jin-Wook;Lee, Hyeong-Cheol
    • Journal of Advanced Navigation Technology
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    • v.13 no.6
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    • pp.813-819
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    • 2009
  • Designing actuator controllers of aircraft, which control aileron, flap, elevator and so on, is quiet difficult, because they have time variant nonlinear mechanical structures and also have many kinds of disturbances which are not been able to model easily. This paper reports about the performance of Fuzzy Auto gain tuning Control algorithm applied unmaned aerial vehicle. Fuzzy Auto gain tuning PID control uses PID control and Fuzzy control, therefore It can be applied very easily and it also has advances of PID control. It can control a unmaned aerial vehicle actuators adaptively even though the designer does not have enough information of plant.

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System identification method for the auto-tuning of power plant control system with time delay (시간지연을 가진 발전소 제어시스템의 자동동조를 위한 System identification 방법)

  • 윤명현;신창훈;박익수
    • 제어로봇시스템학회:학술대회논문집
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    • 1996.10b
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    • pp.1008-1011
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    • 1996
  • Most control systems of power plants are using classical PID controllers for their process control. In order to get the desired control performances, the correct tuning of PID controllers is very important. Sometimes, it is necessary to retune PID controllers after the change of system operating condition and system design change, etc. Commercial auto-tuning controllers such as relay feedback controller can be used for this purpose. However, using these controllers to the safety-critical systems of nuclear power plants may be cause of unsafe operation, because they are using test signals for tuning. A new system identification auto-tuning method without using test signal has been developed in this paper. This method uses process input/output signals for system identification of unknown control process. From the model information of control process which was obtained from system identification approach, the optimal PID parameters can be calculated. The method can be used in the safety-critical systems because it is not using test signals during system modeling process.

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Automatic Performance Tuning of PID Trajectory Tracking Controller for Robotic Systems (로봇 시스템에 대한 PID 궤적추종 제어기의 자동 성능동조)

  • 최영진
    • Journal of Institute of Control, Robotics and Systems
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    • v.10 no.6
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    • pp.510-518
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    • 2004
  • The PID trajectory tracking controller for robotic systems shows performance limitation imposed by inverse dynamics according to desired trajectory. Since the equilibrium point can not be defined for the control system involving performance limitation, we define newly the quasi-equilibrium region as an alternative for equilibrium point. This analysis result of performance limitation can guide us the auto-tuning method for PID controller. Also, the quasi-equilibrium region is used as the target performance of auto-tuning PID trajectory tracking controller. The auto-tuning law is derived from the direct adaptive control scheme, based on the extended disturbance input-to-state stability and the characteristics of performance limitation. Finally, experimental results show that the target performance can be achieved by the proposed automatic tuning method.

Auto tuning of the hydraulic servo control system using fuzzy set theory (퍼지 집합 이론을 응용한 유압 서보 제어계의 자동 이득 조절)

  • 이교일;나종국
    • 제어로봇시스템학회:학술대회논문집
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    • 1987.10b
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    • pp.352-357
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    • 1987
  • The Auto Tuning Controller is designed using Fuzzy set theory. And to verify its validity it is Applied to the Auto Tuner of hydraulic Control System. Fuzzy Tuning Procedures are written by linguistic model and translated into C language formation by preprocessor. Then it is executed with state feedback controller in real time, Fuzzy Logic Controller adjusts state feedback gain by proper tuning logic in each step to satisfy the desired maximum overshoot and settling time.

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Development of auto-tuning PID controller for Temperature Control systems and Its Application to Rapid Thermal Processor (온도제어용 자동동조 PID 제어기 설계와 RTP에의 적용)

  • 임재식;이영일
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.62-62
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    • 2000
  • An auto-tuning PID controller which is adequate for temperature control is developed based on relay-control and pole-placement Using the critical frequency which is obtained from relay-control parameters of assumed model are identified. Pole/zero-placement PID controller is designed for the identified model. The desired pole/zeros are determined so that the closed-loop has overshoot free step response. The developed auto-tuning PID controller was successfully applied to the temperature control of RTP.

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On the Auto-Tuning of a Discrete PID Controller Based on the Ziegler and Nichols's Method (Ziegler-Nichols 방법을 이용한 이산형 PID제어기의 자동동조)

  • 이영일;권욱현
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.40 no.8
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    • pp.774-781
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    • 1991
  • This paper proposes an auto-tuning method of a discrete -PIC controllers which is based on the Ziegler and Nichols's PID Tuning Rule. This tunign rule is derived using the Pade's first order approximation and it prevents the performance degradation caused by the time-delay effect of zero order holder when the Ziegler-Nichols tuning rule is applied to a discrete PID controller. A simple and practical auto-tuning method is proposed through combining this discrete tuning rule with the relay control. The auto-tuning scheme is implemented on a microprocessor based system and is applied to a position control system to show the effectiveness of the discrete tuning rule.

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On the Auto Tuning of Fuzzy PID Controller

  • Kim, Yoon-Sang;Oh, Hyun-Cheol;Ahn, Doo-Soo
    • Proceedings of the Korean Institute of Intelligent Systems Conference
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    • 1998.06a
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    • pp.57-62
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    • 1998
  • This paper presents an auto tuning method of PID controller based on the application of fuzzy logic. The proposed method combined the principles of PID control with fuzzy control, which cam considerably improve the performance index of PID controller. Simulation results show that higher performance and accuracy of overall system for desired value is achieved with our manner when compared to widely-used conventional tuning method.

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Vibration Isolation Control using PSO Algorithm for Auto-tuning of PID Parameters

  • Oh, Se-Boung;Park, Chang-Su;Bang, Hyo-Choong
    • 제어로봇시스템학회:학술대회논문집
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    • 2004.08a
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    • pp.1380-1385
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    • 2004
  • In this paper, auto-tuning technique of the PID controller gain by particle swarm optimization algorithm is presented. PID controller is easy to implement to numerous control systems. After PID gain tuning is completed, its result could be implemented to control spacecraft vibration such as jitter that is high frequency vibration usually over 10Hz. The off-line PID controller tuning is done under system nonlinearities and uncertainties existence, then its result is applied to control experiment device to prove the PSO efficiencies.

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Lead Angle Auto Tuning Technique for Optimal Control of BLDC Motor (BLDC모터 최적 제어를 위한 Lead Angle Auto Tuning 기법)

  • Ahn, Sung-Kuk;Cha, Hanju
    • Proceedings of the KIPE Conference
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    • 2020.08a
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    • pp.399-400
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    • 2020
  • 본 논문은 Sensored BLDC 모터의 제어방법을 설명하고, 효율적인 최적 제어를 하기위해 Lead Angle 제어를 하는 방법에 대하여 설명하였다. Lead Angle 값을 실시간 Auto Tuning 하는 기법을 설계 및 구현하였다. 실제 Microchip 사의 DSC를 사용하여 Software로 동작을 구현하였으며, PWM 스위칭 하기 위한 반도체 소자는 IGBT 모듈인 IPM을 사용하여 BLDC 모터의 구동회로인 인버터를 구성하였다. 실제 사용하는 400W급 BLDC 모터를 사용하여 Lead Angle 제어와 Auto Tuning 실험결과를 비교 검증하였다.

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