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:
Apr. 20, 1993
Filed:
Sep. 16, 1991
Peter N Osgood, Upton, MA (US);
Thomas E Simmons, Westborough, MA (US);
Morgan Construction Company, Worceter, MA (US);
Abstract
A system and method for monitoring a rolling mill which includes a data acquisition module that continually acquires, from mill instrumentation computers, time domain data relating to finished product gauge, entering product gauge, separating forces occurring at each roll stand in the mill, and RPMs of each roll in the roll stands over a calculated data acquisition time period. A monitoring CPU transforms the acquired data into the frequency domain in response to the rolls operating at an approximately constant speed over the data acquisition time period. A frequency spectrum correlation analysis is performed with the frequency domain data in order to identify the specific contributions to frequency amplitudes occurring in the finished product gauge frequency domain data. A determination is then made as to whether the identified frequency amplitudes exceed predetermined thresholds which correspond to a predetermined warning level and a maximum tolerance level of the finished product. A graphical display of those mill components contributing to near and out of tolerance finished product is provided.