Invention Grant
- Patent Title: Dithering hydraulic valves to mitigate static friction
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Application No.: US16585784Application Date: 2019-09-27
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Publication No.: US11408449B2Publication Date: 2022-08-09
- Inventor: Vernon Joseph Brabec
- Applicant: Topcon Positioning Systems, Inc.
- Applicant Address: US CA Livermore
- Assignee: Topcon Positioning Systems, Inc.
- Current Assignee: Topcon Positioning Systems, Inc.
- Current Assignee Address: US CA Livermore
- Agency: Chiesa Shahinian & Giantomasi PC
- Main IPC: F15B15/20
- IPC: F15B15/20 ; F15B20/00 ; F15B21/12

Abstract:
A method and apparatus for dithering hydraulic valves to mitigate static friction (“stiction”) associated with the hydraulic valves. A first hydraulic valve and a second hydraulic valve are dithered to mitigate stiction associated with those valves. The dithering of the first and second hydraulic valves also cause dithering of a main hydraulic valve associated with the first and second hydraulic valves. Accordingly, stiction of three hydraulic valves of a hydraulic system is mitigated.
Public/Granted literature
- US20210095701A1 DITHERING HYDRAULIC VALVES TO MITIGATE STATIC FRICTION Public/Granted day:2021-04-01
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