A method for controlling the temperature of a solar panel

Abstract

The invention discloses a temperature control method applied to thermal vacuum tests of a solar cell panel of a spacecraft. According to the temperature control method applied to the thermal vacuum tests of the solar cell panel of the spacecraft, the surface temperature of the solar cell panel serves as a controlled object, and an infrared lamp array serves as a heater. The temperature control method comprises the steps of (1) building an infrared lamp current-and-power stable-state and dynamic model on the basis of a standard PID algorithm, (2) setting ratio parameters, integral parameters and differential parameters at different temperatures, (3) setting algorithm target curves in a sectionalized mode, (4) using a two-dimensional interpolation method to improve uniformity of control, and (4) introducing a neural network model to forecast the surface temperature of a test piece. Uniformity, rate adjustability and high-precision control of the surface temperature of the solar cell panel of the thermal vacuum tests of the solar cell panel of the spacecraft are achieved.

Description

technical field [0001] The invention belongs to the field of solar cell panel ground tests, and in particular relates to a method for controlling the temperature of a spacecraft solar cell panel. Background technique [0002] The energy of the spacecraft is supplied by solar panels. In order to ensure normal operation in the space environment, solar panels need to be subjected to thermal vacuum tests to expose their material and process defects under specified pressure and temperature conditions. In the thermal vacuum test of the battery board, the infrared lamp array is used to heat the battery board, and the infrared lamp is driven by the program-controlled power supply to heat the surface of the battery board. Use a thermocouple to collect the surface temperature of the solar panel and compare it with the set target temperature to calculate the control amount. Perform closed-loop control. [0003] The existing temperature control method uses a fixed parameter PID algori...

AI Technical Summary

Problems solved by technology

[0004] (1) Due to the different characteristics of the controller and the battery board at different temperatures, the use of a control algorithm with fixed parameters will cause control overshoot and oscillation

Especially when the infrared lamp works in a low current state, its hysteresis is strong, which is more likely to cause overshoot and oscillation in the control

[0005] (2) The current temperature control method cannot realize the heating and cooling of the battery board at a given rate

[0006] (3) The surface temperature uniformity of the battery board is poor during the test

As a result, the quality of the test cannot be fundamentally guaranteed

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