Title: Study on high frequency response characteristics of a moving-coil-type linear actuator using the coils combinations

Authors: Yueyu Wu; Mengdi Liu; Gong Zhang; Zhicheng Hou; Qunxu Lin; Hai Yuan

Addresses: Frontier Science and Technology Research Center, Guangzhou Institute of Advanced Technology, Guangzhou, 511458, China ' Frontier Science and Technology Research Center, Guangzhou Institute of Advanced Technology, Guangzhou, 511458, China; Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China ' Frontier Science and Technology Research Center, Guangzhou Institute of Advanced Technology, Guangzhou, 511458, China; Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China; School of Engineering Science, University of Chinese Academy of Sciences, Beijing, 100049, China ' School of Automation, Guangdong Polytechnic Normal University, Guangzhou, 510665, China ' School of Railway Transportation, Wuyi University, Jiangmen, 529020, China ' Frontier Science and Technology Research Center, Guangzhou Institute of Advanced Technology, Guangzhou, 511458, China; Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China

Abstract: This paper addresses the problem of dynamic characteristics of a moving-coil-type linear actuator (MctLA) to satisfy the requirements of higher output electromagnetic force and faster response time. A novel coils combination approach is presented because the time constant and the electrified currents are highly relevant to the resistance and the inductance. A general coil is divided into several segments and then used in parallel and series so that three different combinations of the electrified coils are developed. A mathematical model related to the output electromagnetic force, displacement response time, acceleration of the proposed MctLA is presented, respectively. Simulations results show that if the electrified coils are divided into three sections and used in parallel, the dynamic and static performances of the proposed MctLA are greatly improved. Numerical simulation and experimental results prove the usefulness of the electrified coils combinations approach, and the proposed MctLA can display high frequency response characteristics.

Keywords: linear actuator; moving coil type; coils combinations; high frequency response; experimental investigation.

DOI: 10.1504/IJHM.2022.125088

International Journal of Hydromechatronics, 2022 Vol.5 No.3, pp.226 - 242

Received: 28 Aug 2021
Accepted: 26 Feb 2022
Published online: 25 Aug 2022 *