Robust Control Design For Passive Torque Position Servo Systems

Passive torque servo system is simulated aircraft in the air servo hinge momentsuffered a ground loop simulation system. With technological development, passivetorque load precision servo system performance requirements, is continuouslyimproving. Taken a passive electric steering torque servo as the background, a newsystem control method is studied in this dissertation.Firstly, the passive torque servo system research status overview summarizesthe main factors affecting the system performance, as well as the advantages anddisadvantages of previous control methods.Secondly, based on the analysis mechanism, the passive torque servo systemmodeling is built. The passive torque servo system with nonlinear elements isanalyzed.Thirdly, the effect of passive torque servo system performance factors isanalyzed. The excess torque, dead zone, steering torque sensor measurement errorand parameter uncertainty on system performance is explained.Finally, in the system model based on the analysis, based on mixed sensitivitymethod, first using feed-forward compensation method suppresses unwanted torque;then use the dead zone compensation method for suppressing backlash inverse deadzone nonlinearity, thus improving the plant model; Finally compensation, withservo parameter uncertainties linear systems, robust controller design forstabilization systems, access to robust stability, and through simulation shows theeffectiveness of the proposed method.