Abstract
On the previous paper, it have been described that the same motion as the cam displacement curves can be obtained by applying the feedforward control method, that is, the inverse to DC motor driving system. In this paper, it was clarified that the velocity feedback for the motor driving system reduces the effect of the real motor parameter deviation from the setting values of the inverse, even if including the displacement feedback. Moreover, the residual vibration characteristics of one degree of freedom vibration load connected to the motor axis compensated by the above-mentioned means were studied. The numerical and experimental results in case of the basic motion curves as the parabolic and harmonic motion cam curves were similar to the mechanical cam behaviour. Then the availability of the inverse system method for the motor output was assured also dynamically. And the possibility of the open control positioning by the motor was obtained.
