Design and Analysis of 5-DOF Compact Electromagnetic Levitation Actuator for Lens Control of Laser Cutting Machine

Author:

Zhao Chuan1ORCID,Zhang Qinwei1,Pei Wenzhe1ORCID,Jin Junjie1,Sun Feng1,Zhang Hongkui2,Zhou Ran1ORCID,Liu Dongning1,Xu Fangchao1,Zhang Xiaoyou3,Yang Lijian4

Affiliation:

1. School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, China

2. China Coal Technology & Engineering Group Shenyang Research Institute, Fushun 113122, China

3. Department of Mechanical Engineering, Nippon Institute of Technology, Saitama 345-8501, Japan

4. School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

Abstract

In laser beam processing, the angle or offset between the auxiliary gas and the laser beam axis have been proved to be two new process optimization parameters for improving cutting speed and quality. However, a traditional electromechanical actuator cannot achieve high-speed and high-precision motion control with a compact structure. This paper proposes a magnetic levitation actuator which could realize the 5-DOF motion control of a lens using six groups of differential electromagnets. At first, the nonlinear characteristic of a magnetic driving force was analyzed by establishing an analytical model and finite element calculation. Then, the dynamic model of the magnetic levitation actuator was established using the Taylor series. And the mathematical relationship between the detected distance and five-degree-of-freedom was determined. Next, the centralized control system based on PID control was designed. Finally, a driving test was carried out to verify the five-degrees-of-freedom motion of the proposed electromagnetic levitation actuator. The results show it can achieve a stable levitation and precision positioning with a desired command motion. It also proves that the proposed magnetic levitation actuator has the potential application in an off-axis laser cutting machine tool.

Funder

National Natural Science Fund of China

National Key Research and Development Project

Scientific Research Fund Project of Liaoning Provincial Department of Education

Major Project of the Ministry of Science and Technology of Liaoning Province

Key Project of the Ministry of Science and Technology of Liaoning Province

Publisher

MDPI AG

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