Precise temperature control device and control method of star sensor

Abstract

The invention relates to a precise temperature control device and a precise temperature control method of a star sensor. The control method comprises the following steps of (S1) an instruction module analyzes and outputs instruction signals, and a temperature acquisition module acquires working temperature of a detector of the star sensor in real time; (S2) a PID (Proportion Integration Differentiation) control module receives the working temperature and the analyzed instruction signals, carries out PID operation by an anti-fuse FPGA (Field Programmable Gate Array) and outputs PID control quantity; (S3) a current acquisition module acquires working current of a cooler in real time and outputs current abnormality signals; (S4) a PWM (Pulse-Width Modulation) module receives the PID control quantity, carries out PWM operation by the anti-fuse FPGA, outputs pulse modulation signals to control the cooler for cooling, stop the cooler according to the current abnormality signals or control the cooler to start and stop according to the analyzed instruction signals. The precise temperature control device and the control method have the advantages that the anti-fuse FPGA is adopted for realizing precise control of the working temperature of the star sensor, so that temperature guarantee is provided for the accuracy of the star sensor, the requirements for low power consumption and high cooling efficiency are met, and the service life of the star sensor is prolonged.

Description

technical field [0001] The present invention relates to a precision temperature control device and control method for star sensors, in particular to a precision temperature control device and control method for star sensors that use antifuse FPGA to realize all functions, to realize star sensitivity The invention relates to precise temperature control of star sensors and detectors, and belongs to the technical field of precise temperature control of star sensors. Background technique [0002] The star sensor is a high-precision spacecraft attitude measurement instrument, which is mainly used for three-axis attitude measurement and spacecraft navigation of the spacecraft. Its accuracy and working life play an important role in the attitude measurement, control and reliability of the spacecraft. The temperature of the space environment has a great influence on the imaging quality of the optical system of the star sensor. As the working temperature of the star sensor detector ...

AI Technical Summary

Problems solved by technology

However, the control method of a single constant voltage source or constant current source is used to achieve the cooling effect on the star sensor detector by controlling the on-off time of the power supply, which cannot achieve precise temperature control, not only has additional power loss, but also does not It is beneficial to set the best working point of the semiconductor refrigerator

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