• Title/Summary/Keyword: Industrial Controller

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A Design of Industrial Controller with Multi-function and Multi-purpose (다기능 다목적을 갖는 산업용 제어기 설계)

  • 정보환;남진문
    • Journal of the Korea Computer Industry Society
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    • v.2 no.4
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    • pp.481-490
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    • 2001
  • In this paper, we propose the industrial controller with multi-function/multi-purpose in order to cope with a small-amount and large-items environments. The controller designed consists of Main Unit including all of information and Display Unit. The software in the Main Unit is composed of tasks and device drivers and each task is being processed in parallel by operating system supporting multitasking. The controller is structured in three levels to promptly address the control algorithm’s modification, MMI’s change, and so on. We can produce a controller without changing the first layer(hardware) and the second layer(firmware). We only modify the third layer(control algorithm) depending on control targets.

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Design of Current and Speed Controller for DC Motor Drive System Using dSPACE System (dSPACE 시스템을 이용한 직류 전동기 구동 시스템의 전류 및 속도 제어기 설계)

  • Ji Jun-Keun;Lee Yong-Seok
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.7 no.3
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    • pp.338-343
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    • 2006
  • In this paper, design of current and speed controller for DC motor drive system using dSPACE 1104 system is introduced. Current and speed controller is designed and implemented using MATLAB/SIMULINK program simply and easily, and speed control response of DC motor can be advanced. Current and speed control of DC motor is carried in DSP control board using dSPACE system. Speed feedback is processed through QEP using pulse encorder as speed sensor, and current feedback is processed through A/D converter using hall sensor as current sensor. Controller is designed to PI current controler and PI speed controller. Current and speed response is verified through simulations and experiments.

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Design of Deadbeat Controller for DC Motor Driving a Rotational Mechanical System (회전기계 계통을 가동시키는 직류전동기를 위한 데드비트제어기 설계)

  • 이흥재;송자윤
    • Journal of Korea Society of Industrial Information Systems
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    • v.5 no.1
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    • pp.31-36
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    • 2000
  • This paper presents a design method of deadbeat controller for DC motor driving a rotational system with gear. The deadbeat-response design developed for control system of a sampled continuous-data process does not guarantee zero intersampling ripples, but the proposed deadbeat control system that consists of the integral controller and the full-order state observer, and zero-order hold using in continuous systems, has many advantages such as an output response without the ripples and reaching the steady state without error after a given sampling period and faster settling time than the optimal control system in the same sampling period. The results of a case study through matlab simulation are shown that the efficiency of the proposed controller for DC motor driving a rotational system with gear is verified by comparing with optimal controller etc.

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Useful Control Equations for Practitioners on Dynamic Process Control

  • Suzuki, Tomomichi;Ojima, Yoshikazu
    • International Journal of Quality Innovation
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    • v.3 no.2
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    • pp.174-182
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    • 2002
  • System identification and controller formulation are essential in dynamic process control. In system identification, data for system identification are obtained, and then they are analyzed so that the system model of the process is built, identified, and diagnosed. In controller formulation, the control equation is derived based on the result of the system identification. There has been much theoretical research on system identification and controller formulation. These theories are very useful when they are appropriately applied. To our regret, however, these theories are not always effectively applied in practice because the engineers and the operators who manage the process often do not have the necessary understanding of required time series analysis methods. On the other hand, because of widespread use of statistical packages, system identification such as estimating ARMA models can be done with little understanding of time series analysis methods. Therefore, it might be said that the most theoretically difficult part in practice is the controller formulation. In this paper, lists of control equations are proposed as a useful tool for practitioners to use. The tool supports bridging the gap between theory and practice in dynamic process control. Also, for some models, the generalized control equations are obtained.

Multiplexing Control of Automobile Eletromotive Mirror System using CAN(Controller Area Network) Protocol (CAN(Controller Area Network) 프로토콜을 이용한 자동차용 전동 거울의 멀티플렉싱 제어)

  • Yoon, Sang-Jin;Choi, Goon-Ho
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.11
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    • pp.5110-5116
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    • 2011
  • In this paper, multiplexing automation system will be proposed for the automobile electromotive mirror using CAN(Controller Area Network) protocol which has been known that it has a high reliability on the signal in the various network protocols. To do this, a master controller and two (input/output) slave controllers (H/W) are being made and application layer (S/W) is being programmed for effective going and communicating between subsystems. The possibility of the effectiveness of application and control ability will be shown when the system has minimum electrical lines by testing the experimental systems which was made up of the automobile electromotive mirror.

Design of a Pressure Feedback Controller for Hydraulic Excavator Pilot System with EPPRVs (EPPRV 적용 굴착기 파일롯 시스템 압력 피드백 제어기 설계)

  • Seungjin Yoo;Cheol-Gyu Park;Seung-Han You
    • Journal of Drive and Control
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    • v.21 no.3
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    • pp.9-19
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    • 2024
  • Many modern hydraulic excavators now use EPPRVs (Electronic Proportional Pressure Reducing Valves) in their pilot systems to control the spool displacement of the main hydraulic system. However, the performance of these systems is often limited by factors such as magnetic hysteresis, mechanical wear, and transient responses influenced by operating conditions and component installation. This paper presents a pressure feedback controller for excavator pilot systems that utilize EPPRVs. This controller significantly reduces steady-state pressure control errors and mitigates the hysteresis effects commonly seen in traditional open-loop systems. To achieve this, we integrated EPPRVs with the main hydraulic valve and injected a chirp signal into the solenoid current. By doing so, we were able to measure the frequency response of the pilot system across different operating pressures and estimate the system dynamics model. Using these models, we designed a set of PI pressure feedback controllers that are guaranteed to be stable. These controllers were then integrated with a gain scheduler based on a lookup table. Experimental results demonstrate that when the developed pressure feedback controller is incorporated into the conventional open-loop controller, it effectively reduces steady-state pressure control errors and mitigates hysteresis.

A Practical Method to Adopt MAP In Industrial Robot Controller

  • Nagamatsu, Ikuo
    • Proceedings of the KIEE Conference
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    • 1986.07a
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    • pp.97-109
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    • 1986
  • The ultimate goal of an industrial robot is to make full use of its real ability to communicate with any given intelligent device, and to do so independently of hardware, architecture and languages. This paper describes the necessary functions of a robot used in an integrated manufacturing system, and the basic philosophy of organization as applied to the robot controller. An example of a machine vision system called MYVIS is reviewed in relation to MAP and LAN in a practical cell application.

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A Design on Multivariable Controller for Industrial Robot Manipulators (산업용 로봇 매니퓰레이터의 다변수 제어기 설계)

  • 한상완;홍석교
    • Journal of Institute of Control, Robotics and Systems
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    • v.4 no.5
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    • pp.636-643
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    • 1998
  • This paper is presents multivariable control scheme for industrial robot manipulators. The control scheme consists of two loops. The modeling error between linearized robot model and actual robot model is compensated in error compensation loop. The PID control loop is designed for pole assignment to stability of robot system and utilized for trajectory tracking. Alternatively computer simulation results are given for illustration purpose of suggested controller.

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Speed Control of an Induction Motor using Acceleration Feedforward Compensation (가속도 전향보상을 이용한 유도전동기의 속도제어)

  • Kim, Sang-Hoon;Lee, Jae-Wang
    • Journal of Industrial Technology
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    • v.20 no.B
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    • pp.175-182
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    • 2000
  • In this paper, a novel speed control strategy using an acceleration feedforward compensation by the estimation of the system inertia is proposed. With the proposed method, the enhanced speed control performance can be achieved and the speed response against the disturbance torque can be improved for the vector-controller induction motor drive systems in which the bandwidth of the speed controller cannot be made large enough. The experimental results confirm the validity of the proposed strategy.

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Implementation of SOPC-based Reconfigurable Robot Controller (SOPC 기반의 재구성 가능한 로봇제어기 구현)

  • 최영준;박재현;최기홍
    • Journal of Institute of Control, Robotics and Systems
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    • v.10 no.3
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    • pp.261-266
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    • 2004
  • Recently, a variety of intelligent robots are developed for the personal purpose beyond the industrial application. These intelligent robots have ranges of sensors, actuators, and control algorithms to their application. In this paper we propose a reconfigurable robot controller, $SR^2$c (The SOPC-based Reconfigurable Robot Controller), based on SOPC (System on a Programmable Chip), that can be reconfigurable easily by software. The proposed robot controller contains not only a processing module but also robot-specific IP's. To show a feasibility of the proposed robot controller, a small entertainment robot, Wizard-4 is implemented with a single chip controller as proposed in this paper.