Variable-power high-precision temperature control method, system, medium and equipment for spacecraft

Abstract

The invention provides a variable-power high-precision temperature control method, system, medium and equipment for a spacecraft, and the method comprises the steps: 1, the multi-path simultaneous level / pulse logic is realized through a programmable logic device, and all heaters in a closed state are powered on; 2, the temperature change of the measured target is reflected through a temperature measuring circuit; 3,the temperatures of multiple paths of measured targets are sampled periodically through a temperature acquisition circuit; 4, adjustment and quasi-forbidden control are carried out on the temperature control threshold value of the measured target through a processor; 5, according to the real-time temperature and the temperature control threshold value of the measured target collected in the last period, temperature control is carried out on the heater. On the premise that a spacecraft temperature control hardware circuit is not changed, the special requirement for high-precision temperature control of the spacecraft is met through adjustment of functions of programmable logic device software and processor software, the peak power consumption of thermal control is reduced to a certain degree, and certain popularization performance is achieved.

Description

technical field [0001] The invention relates to the technical field of high-precision temperature control of on-orbit spacecraft, in particular to a method, system, medium and equipment for variable power and high-precision temperature control of spacecraft. Background technique [0002] During the flight of the spacecraft in orbit, affected by the space environment such as orbit, sunlight, and radiation, it is necessary to perform high-precision temperature control on some specific targets. Without changing the original temperature control circuit mode, by optimizing the processor software and programmable The logic device software function can realize the high-precision temperature control of the temperature control target, and has good applicability and popularization. [0003] Patent document CN103412590A discloses a high-precision temperature control method suitable for space remote sensing cameras. This patent is based on the thermal characteristic parameter θ of the t...

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Problems solved by technology

However, the patent does not involve the design concept of heater pulse threshold and power consumption reduction

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