Computer-Aided Design of Split-type Stirling Refrigerator

Huang, Bin‐Juine; Chen, H.Y.

doi:10.1016/b978-008042688-4/50090-9

Cited by 1 publication

(1 citation statement)

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“…This method has high resource occupancy rate and needs off-chip EEPROM cooperation to complete spwm driving signal output. Literature [8] showed that because of the complex structure of the refrigerator, the control parameters of the algorithm were mainly determined by field debugging and experience, and the actual temperature control accuracy and stability were not ideal. Therefore, this paper proposes to design a temperature measurement module with secondary amplification and low-pass filtering mechanism in the refrigerator to meet higher amplification and obtain higher precision temperature measurement data.…”

Section: Introductionmentioning

confidence: 99%

A high precision temperature control strategy for space refrigeration controller

Tian,

Li,

Wang

et al. 2023

International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023)

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With the appearance of high-power focal plane module, in order to meet the refrigeration demand of infrared optical remote sensing load under complex working conditions, it is necessary for space refrigeration controller to have high-precision temperature control effect. For the sake of improving the temperature control accuracy of traditional space refrigeration controller, a high-precision temperature control strategy is proposed. By designing a temperature measurement circuit with secondary amplification and low-pass filtering mechanism, high-precision temperature measurement data can be obtained as the temperature feedback input source of the system. Through experimental test, the static temperature measurement accuracy can be improved from 20mk to 5.4 mk by the secondary amplification and low-pass filtering module. By designing the incremental PID with limiting amplitude and speed, the algorithm realizes the fast convergence of temperature curve and small overshoot. The experimental results show that the temperature control accuracy of the high-precision refrigeration controller is ±0.025k, and it stabilizes within 7 minutes after being disturbed, thus realizing high-precision and high-stability refrigeration control.

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Section: Introductionmentioning

confidence: 99%