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:
Jan. 30, 2018
Filed:
Feb. 27, 2015
Applicant:
Danfoss Power Solutions Inc., Ames, IA (US);
Inventor:
Abhijit Das, Ames, IA (US);
Assignee:
Danfoss Power Solutions Inc., Ames, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/11 (2006.01); F04B 49/06 (2006.01); F04B 1/26 (2006.01);
U.S. Cl.
CPC ...
F04B 49/065 (2013.01); F04B 1/26 (2013.01); G06F 17/11 (2013.01);
Abstract
A variable load sense spring setting for an axial piston open circuit having three subsystems. A backstepping control applied to the first and second subsystems to determine an operator control input and a load sense spool effective open area control input that stabilize the first and second subsystems. The calculating a feasible load sense area from the third subsystem and the control inputs.