• Title/Summary/Keyword: Control system design

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Hybrid Structural Control System Design Using Preference-Based Optimization (선호도 기반 최적화 방법을 사용한 복합 구조 제어 시스템 설계)

  • Park, Won-Suk;Park, Kwan-Soon;Koh, Hyun-Moo
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2006.03a
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    • pp.401-408
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    • 2006
  • An optimum design method for hybrid control systems is proposed in this study. By considering both active and passive control systems as a combined or a hybrid system, the optimization of the hybrid system can be achieved simultaneously. In the proposed approach, we consider design parameters of active control devices and the elements of the feedback gain matrix as design variables for the active control system. Required quantity of the added dampers are also treated as design variables for the passive control system. In the proposed method, the cost of both active and passive control devices, the required control efforts and dynamic responses of a target structure are selected as objective functions to be minimized. To effectively address the multi-objective optimization problem, we adopt a preference-based optimization model and apply a genetic algorithm as a numerical searching technique. As an example to verify the validity of the proposed optimization technique, a wind-excited 20-storey building with hybrid control systems is used and the results are presented.

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A study on the tester design of Autonomous station control system (자율분산 역 제어시스템의 테스터 설계 연구)

  • Kim, Young-Hoon;Hong, Soon-Heum
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.1531-1535
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    • 2008
  • The Tester of Autonomous station control system is a system which can test the main function of Autonomous station control system through the data field. The purpose of this paper is to meet the system requirements and design a main function, menu and user interface using Use-case. The main function is a time-deadline test, a schedule broadcast test, a route control test and a version-up test, etc. The design of Autonomous station control system tester plays a primary role of the important document for the upcoming future system development of the tester.

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Design and its Application of Robust Degital Optimal Model Following Servo System (강인한 디지털 최적모델 추종형 서보시스템의 구성과 그 적용)

  • 이양우;김정택;황창선
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.43 no.7
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    • pp.1186-1192
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    • 1994
  • This paper presents an algorithm to design a robust digital model following servo control system in which optimal linear quadratic regulator problem is used to design the control system that make the step/ramp response of the plant kept close to a specified ideal step/ramp response of the model. The quadratic criterion function for a continuous system is used to design the robust digital servo control system. The feasibility of the design technique is shown by the simulation and the proposed method is applied to the speed control of DC servo motor.

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Implementation of Automated Vehicle Electrical and Electronic System based-on Cyber-physical System

  • Song, Younghun;Park, Jeehun;Lee, Kyung-Chang
    • Journal of the Korean Society of Industry Convergence
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    • v.22 no.1
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    • pp.21-28
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    • 2019
  • As the automated vehicle system evolves, electronic devices and control software installed in vehicles are increasing. Therefore, automated vehicle electrical and electronic system (E/E system) design for ensure system integration, software modularization, system reusability, and scalability at the design stage of the automated vehicle is actively studied. This paper introduces a design methodology for automated vehicle E/E systems that employs by using cyber-physical systems (CPS). An automated forklift system was designed to examine the effectiveness of the proposed methodology. This paper showed that the proposed CPS design methodology enables an effective development of automated E/E control systems. Compare to existing design methodologies, it provides higher reusability of individual modules and an easier way to integrate control system elements such as controllers, sensors, and actuators.

Robust Control of Two Mass Spring System with Parameter Variations (매개변수 변동을 갖는 2관성 시스템의 강건제어)

  • 조도현;이종용;이상효
    • Journal of Institute of Control, Robotics and Systems
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    • v.4 no.6
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    • pp.729-737
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    • 1998
  • In this paper, using $\mu$ synthesis algorithm with structured uncertainty, we design controller and apply it for the Two-Inertia resonance(TMS: Two Mass Spring) system. The TMS system is one of the simplest models which generate a torsional vibration. In this system, it is required to design a controller achieving the control performance while suppressing the torsional vibration. Furthermore, when vibration frequency for the system is varying by reason of parameter variations, we should consider parameter variations in controller design. Then, we design two other controller schemes of the PI controller and the standard $H_{\infty}$ controller and compare these controllers with the controller designed by the $\mu$ synthesis robust control method by using simulations and experiments.

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Design of Hydraulic & Control System for the Disc Spinning Machine (디스크 스피닝 성형기의 유압 및 제어시스템 설계)

  • Gang, Jung-Sik;Park, Geun-Seok;Gang, E-Sok
    • Journal of the Korean Society for Precision Engineering
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    • v.19 no.9
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    • pp.157-165
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    • 2002
  • The design of hydraulic & control system has been developed for the disc spinning machine. The hydraulic system has been designed in the overall system including the vertical & horizontal slide fur spinning works which are controlled by hydraulic servo valves in right & left side, and the clamping slide for holding & pressing blank material in center during spinning process. Based on the design concept of this hydraulic system, model test experiments for hydraulic servo control system is tested to conform confidence and applying possibility. The control system is introduced with the fuzzy-sliding mode controller for the hydraulic force control reacting force as a disturbance, because a fuzzy controller does not require an accurate mathematical model for the generation of nonlinear factors in the actual nonlinear plant with unknown disturbances and a sliding controller has the robustness & stability in mathematical control algorithm. We conform that the fuzzy-sliding mode controller has a good performance in force control for the plant with a strong disturbance. Also, we observe that a steady state error of the fuzzy-sliding mode controller can be reduced better than those of an another controllers.

Nuclear Power Control System Design using Genetic Algorithm

  • Lee, Yoon-Joon;Cho, Kyung-Ho
    • Proceedings of the Korean Nuclear Society Conference
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    • 1996.05a
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    • pp.380-385
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    • 1996
  • The genetic algorithm(GA) is applied to the design of the nuclear power control system. The reactor control system model is described in the LQR configuration. The LQR system order is increased to make the tracking system. The key parameters of the design are weighting matrices, and these are usually determined through numerous simulations in the conventional design. To determine the more objective and optimal weightings, the improved GA is applied. The results show that the weightings determined by the GA yield the better system responses than those obtained by tile conventional design method.

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Fault Tolerant Control Design Using IMM Filter with an Application to a Flight Control System (IMM 필터를 이용한 고장허용 제어기법 및 비행 제어시스템에의 응용)

  • 김주호;황태현;최재원
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.87-87
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    • 2000
  • In this paper, an integrated design of fault detection, diagnosis and reconfigurable control tot multi-input and multi-output system is proposed. It is based on the interacting multiple model estimation algorithm, which is one of the most cost-effective adaptive estimation techniques for systems involving structural and/or parametric changes. This research focuses on the method to recover the performance of a system with failed actuators by switching plant models and controllers appropriately. The proposed scheme is applied to a fault tolerant control design for flight control system.

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The Design of Stable Fuzzy Controller for Chaotic Nonlinear Systems (혼돈 비선형 시스템을 위한 안정된 퍼지 제어기의 설계)

  • 최종태;박진배최윤호
    • Proceedings of the IEEK Conference
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    • 1998.10a
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    • pp.429-432
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    • 1998
  • This paper is to design stable fuzzy controller so as to control chaotic nonlinear systems effectively via fuzzy control system and Parallel Distributed Compensation (PDC) design. To design fuzzy control system, nonlinear systems are represented by Takagi-sugeno(TS) fuzzy models. The PDC is employed to design fuzzy controllers from the TS fuzzy models. The stability analysis and control design problems is to find a common Lyapunov function for a set of linear matrix inequalitys(LMIs). The designed fuzzy controller is applied to Rossler system. The simulation results show the effectiveness of our controller.

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Design of Simple-Structured Fuzzy Logic Systems for Segway-Type Mobile Robot

  • Yoo, Hyun-Ho;Choi, Byung-Jae
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.15 no.4
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    • pp.232-239
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    • 2015
  • Studies on the control of the inverted pendulum type system have been widely reported. This is because it is a typical complex nonlinear system and may be a good model for verifying the performance of a proposed control system. In this paper, we propose the design of some fuzzy logic control (FLC) systems for controlling a Segway-type mobile robot, which is an inverted pendulum type system. We first derive a dynamic model of the Segway-type mobile robot and then analyze it in detail. Next, we propose the design of some FLC systems that have good performance for the control of any nonlinear system. Then, we design two conventional FLC systems for the position and balance control of the Segway-type mobile robot, and we demonstrate their usefulness through simulations. Next, we point out the possibility of simplifying the design process and reducing the computational complexity,, which results from the skew symmetric property of the fuzzy control rule tables. Finally, we design two other FLC systems for position and balance control of the Segway-type mobile robot. These systems have only one input variable in the FLC systems. Furthermore, we observe that they offer similar control performance to that of the conventional two-input FLC systems.