Affiliations: [a] School of Mechanical Engineering, Shenyang University of Technology, Shenyang, China | [b] School of Systems Engineering, Kochi University of Technology, Kochi, Japan
Correspondence:
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Corresponding author: Feng Sun, School of Mechanical Engineering, Shenyang University of Technology, No. 111, Shenliao West Road, Economic & Technological Development Zone, Shenyang, 110870, China. E-mail: sunfeng@sut.edu.cn
Abstract: Traditional scroll compressors are difficult to achieve oil-free operation due to the presence of a high-friction anti-rotation mechanism. This paper proposes a magnetic drive oil-free scroll compressor to solve this problem. Firstly, the structure and principle of this scroll compressor are introduced. Then the finite element analysis of the electromagnetic system was conducted; the dynamics model of the magnetic scroll compressor operating in the uncompressed state was established. Finally, the PID control of the system is performed, and simulations and experiments are carried out. Experimental results: under the 0.05 mm step signal in the X direction, the position response time of the system is 0.1 s, and the angle response time of 0.001 rad is 0.2 s. The results show that the oil-free scroll compressor has good position control response characteristics.
Keywords: Oil-free scroll compressor, magnetic drive, PID control, experimental study
