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Double advance tracking method of scroll compressor axial dynamic seal
Published:2021-12-22 author:CAI Jiong-jiong, ZHANG Wen-Hui, NI Kai-Hua, et al. Browse: 1493 Check PDF documents

Double advance tracking method of scroll compressor axial dynamic seal


CAI Jiong-jiong1, ZHANG Wen-Hui1, NI Kai-Hua2, YUAN Xi1, WU Xuan-Jun1, QU Xiao1

(1.School of Automation and Electrical Engineering, Zhejiang University of Science & Technology, 

Hangzhou 310012, China;2.Faculty of Engineering and Information Technology, University of 
Melbourne, Melbourne 3000, Australia)


Abstract: In order to improve the dynamic balance of the axial force of the scroll compressor, and then to improve the dynamic seal of the scroll compressor, for the electromagnetic force mechanism, the double advance tracking method of the axial dynamic seal of the scroll compressor was studied. Firstly, on the basis of the dynamic electromagnetic force control method based on advance tracking PID algorithm, the deficiency and reason of the balance effect of single advance parameter PID optimal advance were studied. Secondly the defects of error variance index evaluation and the characteristics of balance error of cumulative error evaluation were analyzed. The index of collaborative evaluation with cumulative error and error variance was proposed. Then the optimal balance effect needed by the system was analyzed. According to the method of evaluating the tracking effect, an adaptive axial dynamic seal algorithm based on dual lead tracking was proposed. Finally, the experimental platform of electromagnetic mechanism and control system was set up. The control method was verified by experiments. The results show that the number of optimal advance steps required varies with the tracking frequency. The optimal advance tracking amount for different frequencies can be determined by the proposed double advance step search algorithm. The dynamic electromagnetic force control method with double advance parameters can obtain better axial dynamic sealing effect.

Key words:  scroll compressor; dynamic seal;dynamic balance of axial force; dynamic electromagnetic force; advance tracking control


CAI Jiong-jiong, ZHANG Wen-Hui, NI Kai-Hua, et al. Double advance tracking method of scroll compressor axial dynamic seal［J］.Journal of Mechanical & Electrical Engineering, 2021,38(10):1332-1339.

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