The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 01, 2009
Filed:
Aug. 28, 2007
Thomas J. Rehm, Mequon, WI (US);
Peter B. Schmidt, Franklin, WI (US);
John Joseph Golownia, Jr., Hartford, WI (US);
Thomas J. Rehm, Mequon, WI (US);
Peter B. Schmidt, Franklin, WI (US);
John Joseph Golownia, Jr., Hartford, WI (US);
Rockwell Automation Technologies, Inc., Mayfield Heights, OH (US);
Abstract
A method and apparatus for estimating a system inertia and a load torque in a motor controller, the method comprising the steps of providing an acceleration command signal, determining a motor position, using the motor position to generate an acceleration feedback signal, mathematically combining the acceleration feedback signal and a load torque signal to generate a system inertia estimate, mathematically combining the system inertia estimate and the acceleration command signal to generate a motor torque signal, mathematically combining the system inertia estimate and the acceleration feedback signal to generate an inertia torque and mathematically combining the inertia torque and the motor torque signal to generate the load torque estimate.