New Disturbance Observer Design and Application on the Electro-Optical Stabilized Platforms

Aiming at modeling difficulty of the random and time-varying disturbance on the Electro-Optical Stabilized Platforms (EOSPs), a control algorithm of perturbation rejecter + Disturbance Observer (DOB) is proposed by combining the advantage of the rejecter and observer, to improve the robust performance of whole control system and the performance of disturbance suppression. The above control methods are validated in dual-rate loop structure under different friction load and effectively improve the stabilize accuracy of EOSPs. The results show that the compensation strategies of coordinating with one another can constrain effectively the impact of control performance caused by disturbance and load change, and improve the platforms’ stabilization accuracy. According to experimental verification, the control method is effective and applicable in different load conditions, and can provide reference resources and basis for engineering application of the control algorithm.