• 제목/요약/키워드: a control system simplification

검색결과 44건 처리시간 0.037초

대부하/구동 제어 시스템 성능예측 프로그램을 이용한 제어시스템 단순화 연구 (The study on control system simplification of underdeveloping heavy-load driving system using developed performance-estimation program)

  • 최근국;이만형;서동연;박상우
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
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    • pp.436-440
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    • 1996
  • In this study, underdeveloping heavy-load driving servo control system, which are composed of controller, electro-hydraulic servo-valve, hydraulic motor, reduction gear box, turret slew bearing and turret structure, are investigated to simplify the control system. To estimate the effect of each component, modeling and simulation of linear and nonlinear system are carried out. In the first stage, to prove the reliability of performance estimation program, simulation results are compared with experimental results. In the second stage, the effect of each component of control system is evaluated and then a simplified control system is suggested.

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대부하 구동/제어 시스템 성능추정 프로그램을 이용한 제어시스템 단순화 연구 (The Study on Control System Simplification of Underdevelop ing Heavy-Load Driving System Using Developed Performance-estimation program)

  • 최근국;이만형;윤강섭
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1996년도 추계학술대회 논문집
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    • pp.999-1003
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    • 1996
  • In this study, underdeveloping heavy-load driving servo control system, which are composed of controller, electro-hydraulic servo-valve, hydraulic motor, reduction gear box, turret slew bearing and turret structure, are investigated to simplify the control system. To estimate the effect of each component, model ins and simulation of linear and nonlinear system are carried out. In the first stage, to prove the retiability of performance estimation pro-gram, simulation results are compared with experimental results. In the second stage, the effect of each component of control system is evaluated and then a simplified control system is suggested.

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차량 안정성 제어 시스템의 모듈레이터 성능개선 및 단순화에 관한 연구 (A Study on the Performance Improvement and Simplification of the Modulator for Vehicle Stability Control System)

  • 이종찬;송창섭
    • 한국정밀공학회지
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    • 제21권6호
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    • pp.84-93
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    • 2004
  • This study carries out the performance improvement and simplification of hydraulic modulator that plays an important role in vehicle stability control systems. The mathematical models for each component of a modulator, such as pump, wheel cylinder, check and solenoid valve, accumulator, damper are derived in detail. All the mathematical models are combined to form a modulator system and implemented through a computer program, which can be controlled by a user friendly GUI. To verity the simulation, comparison between simulation and experiments has been made. After the verification of the validity of the simulation, the effects of the design parameters of the modulator on the wheel cylinder pressure is investigated. The results show that the modulator without MPA has advantage in early time pressure rise rate, and it can be simplified.

화학 및 체적 제어 계통 설계 단순화에 대한 정량적 평가에 관한 연구 (A Quantitative Evaluation of Chemical and Volume Control System Design Simplification)

  • Son, Han-Seong;Seong, Poong-Hyun
    • Nuclear Engineering and Technology
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    • 제27권5호
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    • pp.753-759
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    • 1995
  • 차세대 원자로 설계의 특징중 하나로 설계 단순화를 들 수 있다. 이 논문에서는 설계 단순화에 관련된 의사결정을 지원하기 위하여, 특히 화학 및 체적 제어 계통의 단순화를 정량적으로 평가할 수 있는 모델을 제시하고 있다. 본 연구에서는, 지금까지 연구되어 온 모델들과는 달리 화학 및 체적 제어 계통이 주변 다른 계통들과 기능적으로 어떻게 접속하고 있는가에 관심을 두고 단순화를 평가할 수 있는 모델을 개발하였다. 또한, 이러한 모델들을 System 80+ 그리고 KSNPP의 화학 및 체적 제어 계통에 적용하여 비교, 평가해 보았다. 평가 결과, CVCS의 복잡도는 주로 펌프의 종류와 수에 의존하는 것으로 나타났다.

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호기-무산소 SBR 반응조를 이용한 ASM No. 1 모델의 간략화 (Simplification of ASM No. 1 Using Aerobic-Anoxic SBR)

  • 김신걸;최인수;구자용
    • 상하수도학회지
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    • 제21권4호
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    • pp.409-420
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    • 2007
  • ASM No. 1 is a very useful model to analyze wastewater treatment system removing organic carbon and nitrogen material. But it isn't adequate to control the wastewater treatment system with real time since it has many material divisions and parameters. So, the purpose of this study is the simplification of ASM No. 1 to control the wastewater treatment system. ASM No. 1 was changed with the model which has 3 material divisions(COD, $NH_4{^+}$, $NO_3{^-}$) and two phases(Aerobic and Anoxic condition). SBR was running with two phases(Phase I and II). Phase II running 20 minutes with aerobic time was used for deciding model parameters and Phase I running 12 minutes with aerobic time was used for proving the simplified model. The simplified model was compared with ASM No. 1 using data of Phase I and II. As a result of model comparison, the simplified model has enough ability to express the variation of $NH_4{^+}$ compound.

Extension and Simplification of Inverse LQ Regulator of Large Scale Systems by Decentralized Control

  • Kubo, T.
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.26-30
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    • 2005
  • An LMI based method to construct a decentralized control law for large scale systems is discussed. It is extended to assure the stability not only of the overall system but also of each subsystem without interconnection. Then, it is simplified to have local feedback loops only for some selected subsystems.

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Switched-voltage control of electrostatic suspension system

  • Woo, Shao-Ju;Jeon, Jong-Up;Higuchi, Toshiro
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1996년도 Proceedings of the Korea Automatic Control Conference, 11th (KACC); Pohang, Korea; 24-26 Oct. 1996
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    • pp.401-404
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    • 1996
  • A new method for the electrostatic suspension of disk-shaped objects is proposed which is based on a switched-voltage control scheme. It operates according to a relay feedback control and deploys only a single high-voltage power supply capable of delivering a dc voltage of positive and/or negative polarity. In addition to the unique feature that no high-voltage amplifiers are needed, this method provides a remarkable system simplification relative to conventional methods. It is shown that despite the inherent limit cycle property of relay feedback based control, an excellent performance in vibration suppression is attained due to the presence of a relatively large squeeze film damping. In this paper, the functional principle of the switched voltage control scheme, numerical analysis, stator electrode design, and a nonlinear dynamic model of the suspension system are described. Experimental results will be presented for a 4-inch silicon wafer that clearly reveal the capability of the proposed control structure to suspend the wafer stably at an airgap length of 50 .mu.m.

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중장비 구동체계의 제어용 동적 모델에 관한 연구 (A study on the dynamic modeling of driving system of a heavy industrial vehicle)

  • 홍성욱;강민식;이종원;김광준
    • 대한기계학회논문집
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    • 제11권2호
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    • pp.222-233
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    • 1987
  • 본 논문에서는 이와 관련하여 전형적인 중장비 구동체계를 대상으로 동적모델 을 유도하는 일련의 과정을 제시하고 구동체계의 효율적 제어를 위한 간략화된 모델을 유도하였다.

릴레이 제어법을 이용한 실리콘 웨이퍼의 정전부상에 관한 연구 (Electrostatic Suspension System of Silicon Wafer using Relay Feedback Control)

  • 전종업;이상욱;정일진;박규열
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.969-974
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    • 2003
  • A simple and cost-effective method for the electrostatic suspension of thin plates like silicon wafers is proposed which is based on a switched voltage control scheme. It operates according to a relay feedback control and deploys only a single high-voltage power supply that can deliver a dc voltage of positive and/or negative polarity. This method possesses the unique feature that no high-voltage amplifiers are needed which leads to a remarkable system simplification relative to conventional methods. It is shown that despite the inherent limit cycle property of the relay feedback based control, an excellent performance in vibration suppression is attained due to the presence of a relatively large squeeze film damping origination from the air between the electrodes and levitated object. Using this scheme, a 4-inch silicon wafer was levitated stably with airgap variation decreasing down to 1 $\mu\textrm{m}$ at an airgap of 100 $\mu\textrm{m}$

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릴레이 제어법을 이용한 실리콘 웨이퍼의 정전부상에 관한 연구 (Electrostatic Suspension System of Silicon Wafer using Relay Feedback Control)

  • 이상욱;전종업
    • 한국정밀공학회지
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    • 제22권10호
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    • pp.56-64
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    • 2005
  • A simple and cost-effective method for the electrostatic suspension of thin plates like silicon wafers is proposed which is based on a switched voltage control scheme. It operates according to a relay feedback control and deploys only a single high-voltage power supply that can deliver a DC voltage of positive and/or negative polarity. This method possesses the unique feature that no high-voltage amplifiers are needed which leads to a remarkable system simplification relative to conventional methods. It is shown that despite the inherent limit cycle property of the relay feedback based control, an excellent performance in vibration suppression is attained due to the presence of a relatively large squeeze film damping origination from the air between the electrodes and levitated object. Using this scheme, a 4-inch silicon wafer was levitated stably with airgap variation decreasing down to $1 {\mu}m$ at an airgap of $100{\mu}m$.