Acceleration/deceleration method

摘要

An acceleration/deceleration method capable of synchronizing two axes in velocity and also in position. The follower axis X is continued to be accelerated after the velocity Vx of the follower axis X reaches the target velocity Vy of the follower axis Y and the acceleration is changed over to a deceleration to direct the target velocity Vy. The time for changing over the acceleration to the deceleration is determined so that the motion amount of the position Px of the follower axis X in excess of the motion amount of the position Py of the objective axis Y is equal to the sum of the displaced motion amount in the acceleration motion and an initial positional difference. Thus, the position and velocity of the follower axis X coincide with the position and velocity of the objective axis Y to achieve complete synchronism of the two axes in the case where there is a positional difference and a velocity difference between the two axes.