Direct-current drive and active temperature control system of two-stage high-frequency pulse tube refrigerator and design method thereof
A technology of pulse tube refrigerator and pulse tube refrigerator, which is applied in the fields of refrigeration and cryogenic engineering and physical electronics, can solve the problems of sensitive and cumbersome driving and control tasks, and achieve the goal of improving energy utilization efficiency and refrigeration stability Effect
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[0029] Below in conjunction with accompanying drawing and embodiment the specific embodiment of the present invention is described in further detail:
[0030] figure 1 It is a schematic diagram of the invented two-stage high-frequency pulse tube refrigerator DC drive and active temperature control system; figure 2 It is a schematic diagram of the dual-channel temperature signal acquisition and operational amplifier module; image 3 It is a schematic diagram of the connection of the H-bridge power amplifier module.
[0031] The invented two-stage high-frequency pulse tube refrigerator DC drive and active temperature control system includes DC-DC conversion module 1, DC-DC conversion module 2 3, dual-channel analog-to-digital signal conversion module 4, and trade-off control between the two stages Module 5, PID control module 6, SPWM signal modulation module 7, dual-channel digital-analog signal conversion module 8, dual-channel temperature signal acquisition and operational ...
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