• Journal of the Korean Magnetics Society
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• v.20 no.1
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• pp.28-33
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• 2010

The purpose of this paper is to analyze and design a new hybrid electromagnetic linear actuator for linear pumps. Solenoid linear actuator is widely used because it occupies small space due to no mechanical energy conversion system. In addition, the energy loss is very low and it has no noise. Conventional solenoid linear actuator, however, has the critical drawback of high power consumption. In this research, we present a new hybrid electromagnetic linear actuator using a permanent magnet in order to reduce power consumption. The enhanced performance of the hybrid linear actuator was verified by dynamic finite element analysis.

• Proceedings of the KIPE Conference
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• 2001.12a
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• pp.33-36
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• 2001

본 논문은 높은 추력비(전동기 추력/전동기 중량=N/ Kg)를 갖는 영구자석 여자 횡축형 선형 전동기(TFLM)를 가진기 엑츄에이터로 사용하여 부피와 체적을 줄이고 적은 중량이 요구되는 고출력 전동식 가진기 시스템을 유압식을 대체하여 구현하고 가변 변위 및 가변 속도가 가능한 제어 방법을 개발하여 적용하고자 한다.

• Journal of the Korean Society for Precision Engineering
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• v.25 no.9
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• pp.53-58
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• 2008

The traditional engine valve train in a combustion engine is the mechanically driven camshaft system that provides one-fixed valve timing. The variable valve timing (VVT), however, is highly required to achieve the significant improvement in fuel economy. To achieve VVT in combustion engine, the solenoid type of actuator had been developed in past years, but it requires current in all operation period, the starting is difficult and the efficiency is low. In this paper, a new linear actuator using permanent magnet (PM) is proposed and verified its feasibility by finite element (FE) analysis.