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, 2016
Filed:
Mar. 15, 2013
Mts Systems Corporation, Eden Prairie, MN (US);
Glen Charles Grenier, Ray, MI (US);
MTS Systems Corporation, Eden Prairie, MN (US);
Abstract
A servo actuator system and method of operating the same includes a dual acting actuator comprising an actuator body and a movable member movable in the actuator body to define a first and second chamber on each side of the movable member. A first port is fluidly coupled to the first chamber and a second port is fluidly coupled to the second chamber. A fluid pump having a return is provided. A proportional valve assembly is fluidly coupled to the fluid pump, return and the first and second ports. The proportional valve assembly includes a plurality of metering orifices. A controller is operably coupled to the proportional valve assembly to control the plurality of metering orifices to generate a load vector having magnitude and direction and wherein an actual position of a movable member in an actuator body is indeterminate.