The simulation of Active Disturbance Rejection Control for the temperature control in space environment

Abstract

In order to improve the temperature control effect of nonlinear, large time-delay and inertia space environment simulation equipment, and to solve the contradiction between heating rapidity and overshoot, this paper introduces the Active Disturbance Rejection Control algorithm into space environment simulation temperature control. Based on the platform model, Active Disturbance Rejection Control controller was designed, and the cascade control model of the heat sink gas-nitrogen temperature space environment simulation equipment was established. The cascade control system was simulated on the MATLAB software platform, and the specimen was raised from 0 °C to 100 °C. The step response rise time was about 4000 s. The specimen rise temperature rate is about 1.5°C/min, and the temperature control process is smooth and there is no overshoot. The simulation shows that the Active Disturbance Rejection Control can effectively improve the space environment simulation temperature control effect.