This paper presents results of an investigation on the system dynamics and the controller design of a linear compressor for stroke and frequency adjustment. A system dynamics model was derived and identified experimentally. A control system was designed based on the system dynamics model. The control system used a PDF (Pseudo-Derivative-Feedback) algorithm. The results of step response test for stroke regulation show that, it takes about 0.2 s for the regulation with small overshoot and negligible steady-state error. For the step change of operating frequency, it takes about 0.4 s to reach steady state with small tracking error. The control system also has very good performance for disturbance rejection. The transient periods are about 0.2 s with stroke variation to within 10%. The controller is shown to have the capability to replace the conventional crank-shaft mechanism as in a reciprocating compressor. The controller can also be used to regulate both stroke and frequency of the compressor during operation. The performance can thus be very flexible and efficient for a system using the linear compressor and the present control system.
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March 2002
Technical Papers
System Dynamics and Control of a Linear Compressor for Stroke and Frequency Adjustment
B. J. Huang,
B. J. Huang
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
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Y. C. Chen
Y. C. Chen
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Search for other works by this author on:
B. J. Huang
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Y. C. Chen
Department of Mechanical Engineering, National Taiwan University, Taipei, Taiwan
Contributed by the Dynamic Systems and Control Division for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the Dynamic Systems and Control Division February 28, 2001. Associate Editor: F. Conrad.
J. Dyn. Sys., Meas., Control. Mar 2002, 124(1): 176-182 (7 pages)
Published Online: February 28, 2001
Article history
Received:
February 28, 2001
Citation
Huang , B. J., and Chen, Y. C. (February 28, 2001). "System Dynamics and Control of a Linear Compressor for Stroke and Frequency Adjustment ." ASME. J. Dyn. Sys., Meas., Control. March 2002; 124(1): 176–182. https://doi.org/10.1115/1.1433802
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