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. 30, 2014
Filed:
Feb. 28, 2011
Grant S. Peterson, Metamora, IL (US);
Randall T. Anderson, Peoria, IL (US);
Grant S. Peterson, Metamora, IL (US);
Randall T. Anderson, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A hydraulic control system is disclosed. The hydraulic control system may have a hydraulic actuator, a valve arrangement, and an operator input device configured to generate a first signal indicative of a desired hydraulic actuator velocity. The hydraulic control system may also have a sensor configured to generate a second signal indicative of an actual flow rate of fluid entering the hydraulic actuator, and a controller. The controller may be configured to determine a desired flow rate of fluid into the hydraulic actuator based on the first signal; to estimate the actual flow rate based on the desired flow rate, a correction flow rate, and a system response model; and to determine the actual flow rate based on the second signal. The controller may also be configured to make a comparison of the estimated and determined actual flow rates of fluid, and to determine the correction flow rate based on the comparison.