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초소형 카메라 모듈을 위한 Tubular형 선형 액츄에이터의 설계와 관한 연구
정인성(In-Soung Jung),허진(Jin Hur),성하경(Ha-Gyeong Sung) 대한전기학회 2007 대한전기학회 학술대회 논문집 Vol.2007 No.4
This paper presents design results of an ultra-small actuator for auto focus or optical zoom function of mobile phone cameras. The consideration of the actuator is tubular type having a large hole in its center to arrange some optical lenses. The stator consists of 3-phase windings, and the mover is designed to an Nd injection permanent magnet(PM) which magnetized with multi-pole polar pattern. From the numerical analysis that taking into account the magnetizing pattern of the PM, the thrust of the designed actuator is about 40mN with the outer diameter of 7㎜.