Performance comparison of active disturbance rejection control and sliding mode control in spacecraft attitude control
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Considering the dynamics of spacecraft in attitude maneuver, we propose an active disturbance rejection control(ADRC) which has strong rejection ability for perturbations and disturbances. This control technique gets rid of a precise model required in traditional control methods. We have conducted the experiments of command-tracking, disturbance rejection and robustness investigation, and compared the results with those obtained from a sliding mode control(SMC) with a reaching law. The comparison shows that ADRC exhibits better dynamic performance, higher ability in disturbance rejection and stronger robustness against the parameter uncertainty and external disturbance.