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조성락(Sungrak Cho),경진호(Jinho Kyung),노승국(Seungkook Ro),박종권(Jongkweon Park),노명규(Myounggyu Noh) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
A micro magnetic bearing system with five degrees of freedom active control has been designed for a miniature spindle to be used in a μ-factory. A shaft of the micro spindle is suspended by five set of hybrid magnetic bearings at each side of the shaft. Permanent magnets produce bias magnetic flux for the magnetic bearings and an electric motor(Φ 24,70W) is set between the magnetic bearings. Five eddy current sensors are used to measure the shaft position. An analytical model of the system is developed for the design purpose. This model is verified through 3-D finite element analysis. A prototype spindle is designed and currently under construction.
조성락(Sungrak Cho),경진호(Jinho Kyung),노승국(Seungkook Ro),박종권(Jongkweon Park) 한국생산제조학회 2004 한국생산제조시스템학회 학술발표대회 논문집 Vol.2004 No.10
One of the obstacles for a magnetic bearing to be used in the wide range of industrial applications is the failure modes associated with magnetic bearings. These failure modes include power amplifier faults, position sensor faults, and the malfunction of controllers. Fault-tolerant magnetic bearing systems have been proposed so that the system can operate in spite of some faults. In this paper, we designed and tested a fault-tolerant magnetic bearing system. The system can cope with the actuator faults as well as the faults in position sensors, which are the two major fault modes in a magnetic bearing system.
터보분자펌프용 고장허용 자기베어링 시스템 설계 및 개발
조성락(Myounggyu Noh),노명규(Byungchul Park),박병철(Sungrak Cho) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
One of the obstacles for a magnetic bearing to be used in the wide range of industrial applications is the failure modes associated with magnetic bearings, which we don't expect for conventional passive bearings. These failure modes include electric power outage, power amplifier faults, position sensor faults, and the malfunction of controllers. Fault-tolerant magnetic bearing systems have been proposed so that the system can operate in spite of some faults in the system. In this paper, we designed and implemented a fault-tolerant magnetic bearing system for a turbo-molecular vacuum pump. The system can cope with the actuator/amplifier faults as well as the faults in position sensors, which are the two major fault modes in a magnetic bearing system.
조성락,경진호,노승국,박종권 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-
One of the obstacles for a magnetic bearing to be used in the wide range of industrial applications is the failure modes associated with magnetic bearings. These failure modes include power amplifier faults, position sensor faults, and the malfunction of controllers. Fault-tolerant magnetic bearing systems have been proposed so that the system can operate in spite of some faults. In this paper, we designed and tested a fault-tolerant magnetic bearing system. The system can cope with the actuator faults as well as the faults in position sensors, which are the two major fault modes in a magnetic bearing system.