Study on a New High Frequency Moving Coil Permanent Magnet Linear Motor  

作　　者：ZHANG Gong QIU Rong CHEN Jian 

机构地区：[1]School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China [2]Starter Motors and Generators Division, Bosch Automotive Products Co. , Ltd. , Changsha 410100, China [3]Guangzhou Toyota Motor Co. , Ltd. , Guangzhou 511455, China [4]School of Mechanical and Aerospace Engineering, Queen's University, Belfast, UK

出　　处：《International Journal of Plant Engineering and Management》2010年第1期28-35,共8页国际设备工程与管理（英文版）

基　　金：supported by The National High Technology Research and Development of China (863 Programme) under Grant No. 2006AA09Z226

摘　　要：In order to improve the characteristics of a conventional moving coil permanent magnet linear motor （MCPMLM）, such as weak points on export force, response time, response speed, we studied a permanent magnet （PM） structure that is a key component of MCPMLM. Different magnetization techniques of single PM and differ- ent array structures of multiple PMs are compared, and a new MCPMLM magnetized along the external field force lines wing eight pieces of a tegular Halbach magnet array with air gaps is proposed as well. The analysis on magnetic field and experimental results of MCPMLM demonstrates that the force between the coil and the PM increases by more than 40%. The simulation frequeney is close to 350 Hz at -3 dB , and the response time is O. 005 s. In addition, the experiment frequency reaches 300 Hz at -3 dB and the response time is 0. 004 s, which agrees well with the simulation results. It means that the developed MCPMLM enjoys advantages in high frequency and rapid response, and can satisfy the requirements of a high speed electro-hydraulic proportional valve.In order to improve the characteristics of a conventional moving coil permanent magnet linear motor （MCPMLM）, such as weak points on export force, response time, response speed, we studied a permanent magnet （PM） structure that is a key component of MCPMLM. Different magnetization techniques of single PM and differ- ent array structures of multiple PMs are compared, and a new MCPMLM magnetized along the external field force lines wing eight pieces of a tegular Halbach magnet array with air gaps is proposed as well. The analysis on magnetic field and experimental results of MCPMLM demonstrates that the force between the coil and the PM increases by more than 40%. The simulation frequeney is close to 350 Hz at -3 dB , and the response time is O. 005 s. In addition, the experiment frequency reaches 300 Hz at -3 dB and the response time is 0. 004 s, which agrees well with the simulation results. It means that the developed MCPMLM enjoys advantages in high frequency and rapid response, and can satisfy the requirements of a high speed electro-hydraulic proportional valve.

关 键 词：moving coil permanent magnet linear motor high response MAGNETIZATION Halbach array 

分 类 号：TH811[机械工程—仪器科学与技术] TM359.4[机械工程—精密仪器及机械]