• Title/Summary/Keyword: Industrial Controller

Search Result 1,203, Processing Time 0.027 seconds

Design of a Robust Controller Using Disturbance Rejection Controller (외란 제거 제어기를 이용한 강인 제어기의 설계)

  • Yeo, Hee-Joo
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.7 no.2
    • /
    • pp.137-144
    • /
    • 2006
  • This paper proposes the design of a robust controller based on disturbance observer which is strong to variation of system parameters, uncertainty of models or external disturbance. The controller consists of a mode based compensator and a feedback controller based on two-loop structure. The compensator in the internal-loop removes internal and external disturbances and a feedback controller in the external loop achieves performance along with given specifications. As a result, it shows that the proposed robust controller can stabilize a system against disturbance and improve controlling performance.

  • PDF

Implementation and Performance Evaluation of Preempt-RT Based Multi-core Motion Controller for Industrial Robot (산업용 로봇 제어를 위한 Preempt-RT 기반 멀티코어 모션 제어기의 구현 및 성능 평가)

  • Kim, Ikhwan;Ahn, Hyosung;Kim, Taehyoun
    • IEMEK Journal of Embedded Systems and Applications
    • /
    • v.12 no.1
    • /
    • pp.1-10
    • /
    • 2017
  • Recently, with the ever-increasing complexity of industrial robot systems, it has been greatly attention to adopt a multi-core based motion controller with high cost-performance ratio. In this paper, we propose a software architecture that aims to utilize the computing power of multi-core processors. The key concept of our architecture is to use shared memory for the interplay between threads running on separate processor cores. And then, we have integrated our proposed architecture with an industrial standard compliant IDE for automatic code generation of motion runtime. For the performance evaluation, we constructed a test-bed consisting of a motion controller with Preempt-RT Linux based dual-core industrial PC and a 3-axis industrial robot platform. The experimental results show that the actuation time difference between axes is 10 ns in average and bounded up to 689 ns under $1000{\mu}s$ control period, which can come up with real-time performance for industrial robot.

PC-based Controller for Industrial Solid Freeform Fabrication System (산업용 SFFS (Solid Freeform Fabrication System)을 위한 PC 기반 제어기)

  • 박남수;황면중;이두용
    • Proceedings of the Korean Society of Precision Engineering Conference
    • /
    • 2004.10a
    • /
    • pp.73-77
    • /
    • 2004
  • This paper presents a PC-based controller of industrial SFFS(Solid Freeform Fabrication System). The SFFS has multiple sub-controllers for the building room, the powder room, the temperature, and the density of oxygen in the chambers. Hence the main PC-based controller should effectively and timely send commands to the sub-controllers, and monitor the overall SLS process. The required actuators and sensors are selected to optimize the overall performance of the SFFS.

  • PDF

Monitoring of Industrial Controller using Web Server On Embedded Linux Platform

  • Park, Byung-Wook;Cho, Duk-Yun
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2001.10a
    • /
    • pp.45.4-45
    • /
    • 2001
  • In this paper, we present the wet-based monitoring system for industrial controller such as inverter controller for hydraulic elevators. The monitoring system is using an embedded web server on embedded Linux platform. The control board of system-On-Chip (SoC) is based on ARM7TDMI with Ethernet controller. Wet-based monitoring system using embedded Linux platform can reduce the cost, and have flexibility both of technical issues and locations If the system to be monitored. The system shows the feasibility of remote monitoring system based on embedded Linux platform.

  • PDF

Design of Nonlinear PI Controller for velocity Control of Induction Motor (유도전동기 속도제어를 위한 비선형 비례적분 제어기 설계)

  • Oh, Tae-Seok;Kim, Il-Hwan;Park, Chan-Won
    • Journal of Industrial Technology
    • /
    • v.26 no.B
    • /
    • pp.227-231
    • /
    • 2006
  • This paper presents a robust speed control method of induction motors(IM) using a Non-linear PI controller(NPI). NPI is high gain controller in region of small error, and low gain controller in region of large error. So in steady state, system will be robust against variation of load torque. The simulation and experiment results confirm the validity of proposed control scheme.

  • PDF

Edge Position Controller by using ultrasonic sensor ( hardware ) (초음파 센서를 이용한 Edge Position Controller (하드웨어))

  • Jeon, Jin-Wook;Park, Chan-Won
    • Journal of Industrial Technology
    • /
    • v.27 no.B
    • /
    • pp.97-101
    • /
    • 2007
  • We have developed a Edge Position Controller (EPC) using a ultrasonic sensor and applied to a fabric machine as a web guide system. Hardware devices composed of a ultrasonic transmitter-receiver sensor module and microprocessor-based sensor signal processing system are developed to realize the proposed system. We evaluated the control characteristics of the EPC and the performance of the system was good enough to apply the actual system.

  • PDF

Practical Design and Implementation Methodology for Disturbance Rejection Controller (외란 제거 제어기의 실제적인 설계 및 구현 방법)

  • Yeo Hee-Joo
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.6 no.1
    • /
    • pp.37-47
    • /
    • 2005
  • This Paper proposes a practical design and implementation methodology for a disturbance rejection controller. In a 2 Degree-Of-Freedom (DOF) structure, disturbance rejection performance can be improved without a high gain in forward-loop controller which might cause unwanted side-effects in conventional controller. But, since design methodology of 2 DOF controller is originally derived from the 2 DOF theory, it is not easy to utilize fer various industrial applications. Disturbance observer is a simple, but very effective 2 DOF controller. In this paper, practical issues are discussed from basic idea of DOB to technical procedure for design and implementation. Additionally, a methods and their examples of experimental modeling are explained. The proposed method is demonstrated by two examples of linear-type motor systems.

  • PDF

The Design of Auto Tuning Neuro-Fuzzy PID Controller Based Neural Network (신경회로망 기반 자동 동조 뉴로-퍼지 PID 제어기 설계)

  • Kim, Young-Sik;Lee, Chang-Goo
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.7 no.5
    • /
    • pp.830-836
    • /
    • 2006
  • In this paper described an auto tuning neuro-fuzzy PID controller based neural network. The PID type controller has been widely used in industrial application due to its simply control structure, easy of design, and inexpensive cost. However, control performance of the PID type controller suffers greatly from high uncertainty and nonlinearity of the system, large disturbances and so on. In this paper will design to take advantage of neural network fuzzy theory and pid controller auto toning technique. The value of initial scaling factors of the proposed controller were determined on the basis of the conventional PID controller parameters tuning methods and then they were adjusted by using neural network control techniques. This controller simple structure and computational complexity are less, and also application is easy and performance is excellent in system that is strong and has nonlinearity to system dynamic behaviour change or disturbance. Finally, the proposed auto tuning neuro-fuzzy controller is applied to magnetic levitation. Simulation results demonstrated that the control performance of the proposed controller is better than that of the conventional controller.

  • PDF

The Characteristic of Control Response of BLDC using a Fuzzy PI Controller (퍼지 PI 제어기를 사용한 BLDC 제어 응답특성)

  • Yoon, Yong-Ho;Kim, Jae-Moon;Kim, Duk-Heon;Won, Chung-Yuen
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.60 no.10
    • /
    • pp.1978-1983
    • /
    • 2011
  • BLDC motor is used in a wide variety of industrial and servo applications. Its features and advantages mainly consist in high value of torque/inertia ratio, high efficiency with speed range and high dynamic performance. This paper deals with the speed control of a trapezoidal type brushless DC motor using Fuzzy PI controller. The conventional PI controller has been widely used in industrial applications. If we select a optimal PI control gain, the PI controller shows very good control performance. But it is very difficult to find the optimal PI control gain. Fuzzy control does not need any model of plant and is basically adaptive and gives robust performance for plant parameter variation. Therefore the combinations of conventional PI controller and fuzzy controller seem to be very effective. This paper deals with PI controller with 4-rule based fuzzy controller. The proposed fuzzy PI controller increases the control performance of the conventional PI controller. Simulation and experimental results show that fuzzy PI controller has a good robustness regarding the improper tuned PI controller.