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:
May. 03, 2011
Filed:
Dec. 30, 2005
Christer Wallin, Västerås, SE;
Christer Wallin, Västerås, SE;
ABB AB, Väterås, SE;
Abstract
A method for adaptive compensation of a temperature drift of a sensor, designed to measure the torque of a shaft or a drive train or the force in mechanical equipment during operation. A sensor signal is recurrently measured. An associated temperature is determined. An offset value is calculated as a function of temperature based on measured and stored data. The measured signal value is compensated using the calculated offset value. When the sensor is unloaded or nearly unloaded is detected. When the sensor is unloaded or nearly unloaded the signal sensor signal value and the associated temperature value are stored in a memory and a model of the sensor offset is updated. A system and computer program product for adaptive compensation of the temperature drift of such a sensor signal offset.