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가변용량펌프의 토출동력제어를 위한 이산시간 퍼지제어기 설계
전순용 동양대학교 1996 동양대학교 논문집 Vol.2 No.1
A fuzzy feedback controller is designed for the relieving-horsepower control of output variable pump. Motivated by recent work, an appropriately discrete time control model is obtained for controlling the pump and actually implemented on the industrial excavator. The fuzzy controller is designed to control the influence between the engine and pump by means of detecting the running conditions of the the coupled system. The running condition is used to select the optimal operating point by fuzzy logic. A case study is performed through construction of the control device and installation on the excavator. It shows that the reliving-horsepower control system with the fuzzy-feedback controller, as suggested in this paper, is superior to the conventional PID controllers. And also, the excavator with fuzzy feedback controller shows that the power-loss of the coupled system is minimized and the running speed of the hydraulic actuator is enhanced.
하이브리드 電氣 自動車의 動力傳達 메커니즘 改善에 관한 硏究
전순용,최창원 동양대학교 산업기술연구소 2000 東洋大學校 産業技術硏究所 論文集 Vol.2 No.1
Growing environmental and economic concerns have lead to recent efforts to produce more fuel efficient and lower emissions vehicles. Hybrid Electric Vehicles(ab. HEVs) are the most promising designs to reach these goals. In this paper, We present an of a Power Train of the Hybrid Electric Vehicle(ab. PTHEV). We introduce a different concept of PTHEV than in the present research of PTHEV. This PTHEV includes two benefits of serial(Minimum emission and Maximum efficiency) and parallel(Maximum Power Train efficiency by direct drive engine) PTHEV. Also, this mechanism can avoid driving the engine in the low speed regions.
전순용 東洋大學校 産業技術硏究所 1999 東洋大學校 産業技術硏究所 論文集 Vol.1 No.1
The lead-acid batteries are widely used for movable power source. But, it is difficult to analyze their charging characteristics influenced by various parameters. Because these parameters have non-linear and time-variant characteristics. In this study, the charging characteristics of high capacity lead-acid battery 630AH is investigated through experiments with respect to variations of temperature and life cycle in the charging process. Also, the database of battery's characteristics are established, and the new charging algorithm is suggested using the database. This new charging concept will be useful to development advanced battery charger adapted to battery's condition changes.
전순용 제어·로봇·시스템학회 1998 제어·로봇·시스템학회 논문지 Vol.4 No.4
Motivated by a recent work, a fuzzy-power-controller(FPC) is designed for the relieving-horsepower control of output variable pump with electrical proportional valve and actually implemented on the industrial excavator. In order to calculate the output power of pump with input of FPC, a linear discrete time model of load system to pump is obtained and the result is applied to control the engine-pump coupled system by software without pressure and flow sensor. The FPC controls the engine and pump coupled system by relieving horsepower control according to the change of load and the running conditions in relieving horsepower control are selected by fuzzy inference engine. A case study is peformed through the construction of the control device and installation on the excavator. It shows that the relieving-horsepower control system with the FPC, as suggested in this paper, is superior to the conventional PID controllers. And also, the excavator, with the FPC, shows that the power-loss of the coupled system is reduced and the running speed of the hydraulic actuator is enhanced.