Rockwell Automation Technologies Incorporated

Robert J De Lange

Thomas J Rehm

John J Golownia

A method and apparatus for estimating inertia wherein a load has a limited range of load travel, the method comprising the steps of identifying an intermediate position along the range of load travel that is separated from a first end of the range of load travel, with the load separated from a first end of the range of load travel, increasing a velocity of the electric motor from a first velocity, identifying when the load has reached the intermediate position, identifying the motor velocity at the intermediate position as a second velocity, detecting a first rate of velocity change from the first velocity to the second velocity and deriving an inertia value as a function of the first rate of velocity change.

Growing community of inventors

Greenfield, WI, United States of America

Robert J De Lange