CONTROLLING A PICK MECHANISM OF A MACHINE FOR HANDLING SHEET MEDIA

摘要

A pick mechanism is described. The pick mechanism comprises: a movable pick component; a stepper motor; and, a stepper motor controller. The stepper motor is operably connected to the pick component to drive the pick component in a sequence of movements, and each movement involves the pick component travelling in one direction between one position and another position in a required time. The controller produces control signals that control the motor such that the pick component is driven during a movement at or close to the minimum rate of acceleration required to complete the movement in the required time.