Patent ID: 11932519
Assignee: MAGNETEK, INC.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 7:
8. A method for dynamically controlling operation in a slow-down region for a material handling system, the method comprising the steps of:
receiving a feedback signal from a sensor at a motor controller, wherein:
the feedback signal corresponds to a start of the slow-down region, and
the motor controller is operatively connected to control operation of a motor for an axis of motion in the material handling system;

determining a present velocity of the axis of motion with the motor controller;
determining a slow-down distance for the axis of motion with the motor controller as a function of the present velocity and a deceleration rate;
determining a traverse distance for the axis of motion with the motor controller as a difference between a length of the slow-down region and the slow-down distance;
maintaining a commanded velocity for the axis of motion with the motor controller when the axis of motion is within the traverse distance; and
decelerating the axis of motion with the motor controller when the axis of motion enters the slow-down distance.