Position control system for use in driving system transmitting driving force of driving source to driven member through power transmission mechanism, image forming apparatus, position control method, program for performing the position control method, and storage medium having the program stored thereon

Abstract

A position control system uses a speed command supplied to a driving source. The speed command has a change pattern which has an acceleration section (1) for eliminating a dead zone of a power transmission mechanism, a constant-speed section (or an acceleration section with a slower acceleration than in the section (1)), an acceleration section (3) up to the maximum speed, a constant-speed section (4), a deceleration section (5), a constant-speed section (6) for eliminating the dead zone (or a deceleration section with a slower deceleration than in the section (5)), and a deceleration (7) for stopping at a target section. Even when a driven member has large inertia, the position thereof is accurately controlled to the target position in a semi-closed position control system.