| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem that, when a position is controlled in a semi-closed position control system, the results of the control are different largely depending on the initial state (play) of a power transmission mechanism. SOLUTION: This 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 the dead zone of the 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 the semi-closed position control system. COPYRIGHT: (C)2004,JPO
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