Automatic Temperature Control System and Control Method for Alternating Thermal Load Specimen in Space Environment

Abstract

The invention discloses a temperature automatic control system and control method of alternating thermal load test-pieces under a space environment. The temperature automatic control system comprises a control end, an execution end and a data channel connected with the control end and the execution end, wherein the control end includes an instruction input unit which is for inputting instructions for starting and stopping the automatic test system and setting each test parameter, and a central processing unit which is used for comprehensively analyzing user instructions, current test working conditions and feedback data acquired by a data acquisition unit of the execution end, and determining a next step of working condition operation, and the execution end comprises the data acquisition unit which is used for acquiring operating information, the feedback data, sensor parameters and equipment state information of the temperature automatic control system through sensors. With the temperature automatic control system and control method of the alternating thermal load test-pieces under the space environment of the invention adopted, the automation level and work efficiency of the temperature control system can be greatly improved, and manual operation can be reduced maximally, and risks of introducing man-made errors can be reduced.

Description

technical field [0001] The invention belongs to the field of spacecraft temperature control, and in particular relates to an automatic temperature control system and a control method for an alternating heat load test piece in a space environment. Background technique [0002] When the artificial earth satellite is in orbit, its relative position with the sun and the earth is changing all the time. When the satellite is under the strong irradiation of the sun, the temperature of the satellite will reach above 100°C; in the rest of the time, the satellite will move in the shadow area of ​​the earth, because there is no radiation of sunlight, the temperature of the satellite may drop to -100°C the following. In order to verify the performance of the satellite in low pressure, high and low temperature alternating environments, and to avoid failure due to temperature changes when the satellite is in orbit, before the satellite is launched, the entire satellite and components mus...

AI Technical Summary

Problems solved by technology

However, the inventors found that the first method has the highest efficiency and the shortest test time, but it cannot guarantee that the deviation of the temperature of the test piece is within the allowable range; When shutting down or starting up in low temperature conditions, the thermal noise caused by thermal load changes cannot be quickly eliminated; the third method has the best temperature control accuracy, but the operation is cumbersome, requires relatively high personnel requirements, and has low efficiency

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