http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
C-EPS (C-type Electric Power Steering) 시뮬레이터 설계 및 제어 알고리즘 개발
박명욱(Myung-Wook Park),문희창(Hee-Chang Moon),김정하(Jung-Ha Kim),Carl D. Crane III 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.6
EPS (Electric Power Steering) is important device for improving vehicle"s dynamics and static performances. This paper deals with simulator design for C-EPS (Colum type-EPS), development assist and returnability control algorithm. First, C-EPS system model was simply designed because EPS system is complex control system that has many unknown variables. These parameters were simplified through assumptions. Second, C-EPS simulator was designed for development of control algorithm. This simulator has SAS (Steering Angle Sensor), dual torque sensor, dual load cell for measuring rack force, dual linear actuator for generating tire force and Data Acquisition System. Using this simulator, control methods ware tested. Third, control algorithm was designed for torque assist and returnability. Assist torque map and returnability torque map were found by lots of simulation test. These torque maps were tuned for EPS actuator control. The simulation result was compared with non-EPS system result. In this research, the C-EPS simulator was designed for development of control algorithm about torque assistant and returnability. Using this simulator, control algorithm was improved.
무인 자율 주행 차량 시스템 설계 및 제어에 관한 연구
문희창(Hee-Chang Moon),박명욱(Myung-Wook Park),김정하(Jung-Ha Kim) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.5
The research presented covers the design and control method of unmanned ground vehicle (UGV). An electric vehicle is used and is driven by DC motor. The power system on the UGV has been adjusted and actuators have been installed for steering and brake automation. A toggle switch is implemented to easily switch between manual and autonomous states. The UGV state is monitored by a velocity sensor, as well as steering and brake position sensors. An emergency stop device was designed and installed to quickly and safely stop the UGV. Different control methods, including the PID controller, were studied for improved steering responsiveness, and results were confirmed through experimentation. Satisfactory performance was achieved and several possible areas of future research have arisen.
Xenon-133 Clearance Method에 의한 皮膚 血流量 測定
??辛英,柳在萬,朴明郁 大韓成形外科學會 1987 Archives of Plastic Surgery Vol.14 No.1
A study was made to determine the skin blood flow of various sites of the body using local clearance method of radioactive inert gas Xenon-133. Xenon-133 dissoved in saline was injected directly into the cutaneous tissue of the region to be operated upon. The clearance curve was recorded continuously by collimated scintillation detector for 30 minutes immediately after injection. The clearance curves plotted semilogarithmically consisted of two expotential components, and the skin blood flow in this region was estimated from the clearance rate of the first component. The first component of the clearance curve was found to reflect the skin blood flow, and the second component to reflect that of the cutaneous tissue. These findings were supported by sequential gamma camera images of Xenon-133 clearance. The skin blood flow was measured from the first and second components of Xenon-133 clearance curve, and the following results were obtained. 1) A significant linear decrease of the skin blood flow was observed with increasing age in the deltoid region. 2) The skin blood flow of anterior chest wall was found significantly higher than the deltoid region. However, the skin blood flow of the dorsum of hand and foot were found significantly lower than the deltoid region.