Patent ID: 6747429
Filing Date: 2004-06-08
Classification: B23Q,B41J

Abstract:
A print control system comprising:a position detecting part for detecting the position and traveling direction of an object to be controlled, which is controlled by a servomotor, a speed detecting part for detecting a physical quantity corresponding to the speed of said object to be controlled; a first control part for determining a current value or a voltage value, which is to be added to said servomotor, on the basis of the output of said position detecting part so that said object to be controlled is positioned within a target range, and for controlling said servomotor on the basis of the determined current value or the determined voltage value; a second control part for determining a current value or a voltage value, which is added to said servomotor, on the basis of the output of each of said position detecting part and said speed detecting part so that said object to be controlled is positioned within said target range, and for controlling said servomotor on the basis of the determined current value or the determined voltage value; a third control part for determining a current value or a voltage value of said servomotor on the basis of the output of said position detecting part so that said object to be controlled is stopped within a predetermined range, and for controlling said servomotor on the basis of the determined current value or the determined voltage value; and a control selecting part, which operates in a predetermined timing, for determining whether said object to be controlled is positioned within said target range on the basis of the output of said position detecting part, said control selecting part selecting said third control part when said object to be controlled is positioned within said target range, and selecting said first or second control part on the basis of the output of said speed detecting part when said object to be controlled is positioned out of said target range, said control selecting part causing the selected control part to control said servomotor.