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:
Sep. 14, 2010
Filed:
Jun. 28, 2007
Frank a Demarco, East Peoria, IL (US);
Hongliu Du, Dunlap, IL (US);
Brian D Kuras, Metamora, IL (US);
Thomas M Sopko, East Peoria, IL (US);
Frank A DeMarco, East Peoria, IL (US);
Hongliu Du, Dunlap, IL (US);
Brian D Kuras, Metamora, IL (US);
Thomas M Sopko, East Peoria, IL (US);
Caterpillar Inc, Peoria, IL (US);
Abstract
A system and method for controlling a variator operate to detect variator torques and/or internal pressures and generates a preliminary corrective command. The preliminary corrective command is transformed via a dynamic transform to account for system characteristics during transient operating conditions such as machine acceleration, such that the acceleration of the system during transient periods is not torque-limited by static torque-control map values. In an embodiment, the acceleration may be positive or negative, and in a further embodiment, braking is automatically applied in the case of negative requested power or desired machine retarding.