Analysis of the Rotor Loading System

The aim of this paper is to suppress the extra torque in rotor loading system which is essential to experiment. This paper presents two compensation methods for achieveing high-precision force loading control under the motion of the rotor, namely the feedforward control and the structure-invariable principle control. Feedforward control is successfully implemented in loading system by measuring the open of servo value of position system which is a function of position disturbance. The extra force is eliminated as the dead no-linear effect through Feedforward. The structure-invariable principle is another method for eliminating extra force in application, whose velocity of disturbance position is measured and fed through approximate transform between output of position system and input of loading system. Two compensation dynamic models in rotor loading system are studied to evaluate the validation. Simulation results are included to demonstrate the effects and comparison of compensation control , and show that both methods are available in application.