초록 ▼

A microprocessor-based motor control system operates the rapid advance motor on a slide transfer machine to carry out rapid traverse motions in minimal time. A velocity profile is stored during the acceleration portion of the move and this data is employed to determine when deceleration should begin

A microprocessor-based motor control system operates the rapid advance motor on a slide transfer machine to carry out rapid traverse motions in minimal time. A velocity profile is stored during the acceleration portion of the move and this data is employed to determine when deceleration should begin and to control velocity during the deceleration portion of the move. A position feedback circuit having programmable resolution is employed to develop the velocity profile.

대표청구항 ▼

A control system for a movable element on a machine, the combination comprising: a motor coupled to the movable element for moving the same; a motor control coupled to the motor to operate it in response to a motion command signal; acceleration control means coupled to the motor control for generati

A control system for a movable element on a machine, the combination comprising: a motor coupled to the movable element for moving the same; a motor control coupled to the motor to operate it in response to a motion command signal; acceleration control means coupled to the motor control for generating motion signals which accelerate the movable element from a start position to a rapid traverse velocity and which includes: (a) velocity table storage means, and (b) means for storing numbers in the velocity table storage means, which numbers are indicative of the motion generated by the acceleration control means during successive portions of the acceleration; indicating means coupled to the motor control for sensing the velocity of the movable element and providing an indication when rapid traverse velocity is reached; distance measuring means coupled to the movable element for indicating the distance traveled from its start position; means enabled by the indicating means and coupled to the motor control for generating motion command signals which move the movable element at the rapid traverse velocity; calculating means coupled to the indicating means and the distance measuring means for calculating a deceleration position which is a function of the distance traveled by the movable element during its acceleration from the start position to the position at which it reached rapid traverse velocity; and deceleration control means coupled to the distance measuring means and the calculating means for generating motion command signals to the motor control which decelerate the movable element from its rapid traverse velocity when the movable element reaches the calculated deceleration position, and in which the deceleration control means includes means for reading successive numbers from the velocity table storage means to generate motion command signals during the deceleration of the movable element.