http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
시간 지연 추정 기법을 이용한 권취기의 장력 제어 알고리즘
허정헌(Jeong-Heon Heo),유병용(Byungyong You),김진욱(Jinwook Kim) 유공압건설기계학회 2018 드라이브·컨트롤 Vol.15 No.3
We propose a tension controller based on a time-delay estimation (TDE) technique for a winding machine. Firstly, we perform the necessary calculations to derive a mathematical model of the winding machine. In this sense, it is revealed that the roll radius of the winding machine is characteristically seen to be increasing or decreasing during the winding process. That being said, it is noted that the parameters of the winding machine are coupled and constantly changing during this process. Understandably then, it is noted that the model is shown to be nonlinear and time-varying. Secondly, we propose the way to apply the TDE based controller which is the so-called Time-delay Control (TDC). The TDC utilizes the time-delayed information intentionally to compensate the nonlinear and time-varying characteristics. As we have seen, the proposed controller consists of two parts: one is a TDE component, and the other is an error dynamics component which is defined by a user. In a computer simulation based on the Matlab/Simulink program, the proposed controller is compared with a conventional PID controller, which is widely used in the tension control of the winding machine. The proposed controller reduces the incidence of overshoot and steady-state error in the tension control, as compared to the conventional PID controller.
PLC 프로그래밍을 위한 Loader 소프트웨어(pSET) 개발
조승재(Sengjae Cho),구경모(Kyungmo Koo),유병용(Byungyong You),김태욱(Tae-Wook Kim),심태윤(Taeyoon Shim),이진수(Jin S. Lee) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.7
The pSET (POSAFE-Q Software Engineering Tool, pSET) is a loader software to program POSAFE-Q PLC and is developed as a part of the KNICS (Korea Nuclear Instrumentation & Control System) project. It satisfies IEC61131-3 standards and supports GUI environment, C language, monitoring/debugging function and simulations. In this paper, we introduce the configuration of pSET software, code conversion procedure to generate assembly code from LD, FBD or CC code and monitoring/debugging function. We discuss what is important in developing PLC loader software.
전승욱(Seunguk Jeon),이동주(Dongju Lee),유병용(Byungyong You),박기홍(Kihong Park) 한국자동차공학회 2020 한국자동차공학회 부문종합 학술대회 Vol.2020 No.7
This paper states that when an autonomous vehicle detects a sudden sensor failure or malfunction while driving normally. For the purpose of safety of the driver, a fail-safe system is presented for accident prevention. In the event of an accident, the drivers risk is also reduced by minimizing the vehicle speed. This study focused on how to deal with faults detected by existing algorithms, not how to detect failures in self-driving systems.
가중치를 적용한 Variable Look Ahead Distance 모델 개발 및 성능비교
박경욱(Kyeoungwook Park),박종휘(Jonghwi Park),허명선(Myungseon Heo),한지형(Jihyeong Han),유병용(Byungyong You) 한국자동차공학회 2019 한국 자동차공학회논문집 Vol.27 No.11
In most cases, drivers operate the steering and speed control based on curvature, lane, or relative vehicle information. Self-driving cars normally use error distance and error angle to lateral control in order to follow the reference path, and the error parameters are calculated based on the look ahead distance(LAD). For an efficient lateral control, the LAD must vary according to the road and the driving environment. In this paper, a LAD model was proposed by using lateral error, road curvature, and vehicle speed. In order to check the performance of the proposed model, we compared our own with the static and conventional LAD model. Computer simulations and experiments were performed in order to verify the advantages of the proposed LAD model.