The Application of A New Disturbance Observer in Variable-load Electro-Optical Stabilized Platforms

Abstract

Abstract Aiming at controlling difficulty of variable load Electro-Optical Stabilized Platforms (EOSPs), a control algorithm of perturbation rejecter + Disturbance Observer (DOB) is proposed by using the disturbance suppressor to compensate the disturbance observer due to model mismatch, 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 load change, and improve the platforms’ stabilization accuracy. According to experimental verification, the control method is effective and applicable in variable load conditions, and can provide reference resources and basis for engineering application of the control algorithm.