Motion control system, disturbance control method, and disturbance observation device

The invention discloses a motion control system, an interference control method and an interference observation device.The motion control system comprises a controlled object, an outer ring controller, an interference observer and a bandwidth adjustment module, and the outer ring controller is used for obtaining measurement control parameters of the controlled object and outputting a control instruction to the controlled object in combination with a reference control signal; the interference observer is used for observing the interference suffered by the controlled object; and the bandwidth adjustment module is used for acquiring control parameters of the controlled object and adjusting the bandwidth of the disturbance observer according to the control parameters and a preset adjustment strategy, and the control parameters comprise at least one of a measurement control parameter and a target control parameter. By arranging the bandwidth adjusting module, the interference observer can achieve variable bandwidt