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Investigations on a novel automatic temperature control method and electronics for multi-stage Stirling-type pulse tube cryocoolers.

Number: pap. n. 971

Author(s) : TAN J., ZHANG T., ZHA R., et al.

Summary

The automatic temperature control electronics for the multi-stage Stirling-type pulse tube cryocooler (SPTC) is indispensable in simultaneously maintaining steady cooling temperatures for each stage in practical applications. A novel automatic temperature control method based on expert PID/fuzzy hybrid control method is proposed and its characteristics are elaborated. The design of the control electronics is depicted and the prototype has been tested on a two-stage SPTC providing cooling at 30 K and 85 K, and a three-stage SPTC with cooling temperatures of 90 K, 40 K and 10 K at stages, both developed in the authors’ laboratory. Experimental results show that, with the novel control method and developed electronics, high temperature stability of ±0.3 K@85 K and ±0.2 K@30 K can be obtained for the two-stage SPTC and ±0.5 K@90 K, ±0.2 K@40 K, ±0.15 K@10 K are achieved for the three-stage one.

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Details

  • Original title: Investigations on a novel automatic temperature control method and electronics for multi-stage Stirling-type pulse tube cryocoolers.
  • Record ID : 30026289
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0971

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