| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology that can appropriately hold an object to be driven at a target stop position.SOLUTION: A controller executes processing of gradually changing a current to be input to a motor from an initial value each time the position of an object to be driven is changed to control the current to be input to the motor, and thereby displacing the object to be driven in a first direction and a second direction. The controller determines a holding current value (Um) for holding the object to be driven at a target stop position (Ps). The controller controls the current to be input to the motor on the basis of the determined holding current value to hold the object to be driven arranged at the target stop position at the target stop position. The holding current value (Um) is determined on the basis of a first current value (U1) that is an input current when the object to be driven passes through a target area including the target stop position in the first direction and a second current value (U2) that is an input current when the object to be driven passes through the target area in the second direction.SELECTED DRAWING: Figure 6 |
