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이두복,홍언식,최홍규,채동규,Lee, Doo-Bok,Hong, Eon-Sik,Choe, Hong-Kyu,Chae, Dong-Kyu 한국정밀공학회 1987 한국정밀공학회지 Vol.4 No.4
This paper deals with the design of the digital controller for DC servo motor, and it is implemented for the cartesian coordinate 4 axes manipulator. A design method of the controller is adopted an algorithm using the digital position locked loop(DPLL) method and the linear PID control for the smooth motion. To simplify the hardware configuration of control system, 8279 keyboard/display controller, Z-80 CTC counter and 8255 PPI are used. Therefore the design method to control each motor as real-time is presented. To show effectiveness of the design, the PWM circuit and frequency/voltage converter are applied for the velocity control of robot system. When the proposed controller is applied to the 4-axes manipulator, it reveals that the error probabilities of X, Y and Z axis as 0.033%, 0.023% and 0.028% respectively.
전세일(Se Il Jun),이두복(Doo Bok Lee) 한국정보처리학회 2000 정보처리학회논문지 Vol.7 No.5
The development of recent computer and communication technology has changed Automation System using communication network, and the new USB substituted with Serial Communication is already developed and now popular. In this paper, High speed data transfer system design using USB interface and communication application simulated for the situation is introduced. Base on USB, we can use additive function efficiently coped with former field device. The ''Winsock Connection USB Terminal,'' designed for hardware simulation, control the filed device connected by USB, and provide the way for remote control of field device by Telnet connection through TCP/IP. That theorem can guarantee controling direct input data of user, and accurate function of filed device using USB Packet Transmission. As a result of my research, this communication application system identified good operations of field device with those of former filed device. Another result of the experiment of hardware operation, we obtained accomplishment that the sufficient bandwidth guarantee of USB has high speed and high performance, and reduce the occupancy of system.
USB 인터페이스를 이용한 필드 장비의 고속 데이터 전송 시스템 설계
李斗馥,安景晙 홍익대학교 산업기술연구소 1999 産業技術 Vol.9 No.-
The development of recent computer and communication technology has changed automation system used by communication network, and the new USB substituted with Serial Communication was already developed and now popular. In this paper, high speed data transfer system design using USB interface and communication application simulated for the situation is introduced. At the base of USB, we can use additive functions efficiently coped with former field device. The `Winsock Connection USB Terminal', designed for hardware simulation, controls the field device connected by USB, and can control the field device remotely the assistance of connection through TCP/IP. That theorem guarantees the accurate function by using sensors and field apparatus through packet communication channel of user's direct input As a result of my research, the system of operation through communication application under the condition of a former field device has in good operation. Another result of the experiment of hardware operation, we obtained the result of the sufficient bandwidth guarantee of USB with high speed and high quality comparing with serial system and of the system occupancy.
李斗馥 홍익대학교 산업기술연구소 1992 産業技術 Vol.1 No.-
This paper describes on the controller design for velocity increase of a robot arm. In this study, the solution of dynamics equations is calculated by using Lagrange-Euler method, and it is possible on the real-time control. the amount of dynamics calculation is very large in quantity. So, the solution of dynamics equations must be calculated before stored in memory as the table. These have an advantage of semiconductor that is superhigh speed, enlarged memory capacity. Usually, the table data in a memory device is transfered a byte during 0.1 msec. For the controller, a current drive method is adopted to generate the control torque effectively and the speed of actuator is measured by using a tachometer, and the position of link is measured by using a potentiometer. As a result of this experiment, it is found that the robot manipulator starts early as 0.08 sec and is satisfied well in real time.
Field-Level 제어 장비의 실시간 데이터 억세스 시스템 설계
李斗馥,安景晙 홍익대학교 산업기술연구소 1998 産業技術 Vol.8 No.-
This paper deals with the design of real-time access system of field level control equipment from remote places through communication network by making links between LAN and computers which control various field equipment. The Winsock application program designed to implement simulations for the study was based on standardized Winsock program through WAN(Wide Area Network) According to the results of the study. the connection to computers linked field equipment in the laboratory from remote places through LAN. Also, searching data generated in the process of the controlling equipment on a real-time from remote place are possible through TCP/IP(Transmission Protocol/Internet Protocol) The construction of real-time data access system of field-level equipment from remote places will play an important role in sharing data and information through Internet and Intra-net which is an information network within a company.