Zhaoxiang Yi, Meng Jiang, and Lin Sun
Space gravitational wave detection, spacecraft attitude control, linear active disturbance rejection control, parameter tuning, sensitivity function, complement sensitivity function
This work presents the design of a linear active disturbance rejection controller (LADRC) strategy to improve the precision of spacecraft attitude control. Based on the requirement of attitude indicator, the constraint of thrust torque, and the suppression of disturbance and noise, the constraints of sensitivity function and complement sensitivity function are derived, and the parameters in LADRC are optimised and adjusted by using the bandwidth method. The simulation results show that the relative attitude control accuracy of the method has reached 10−6 rad, which satisfies the precision requirement of attitude pointing and actuator for the geocentric orbit gravitational wave detection mission.
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