Invention Grant
- Patent Title: Auto-tuning electro-hydraulic valve
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Application No.: US13567715Application Date: 2012-08-06
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Publication No.: US08527073B2Publication Date: 2013-09-03
- Inventor: QingHui Yuan , Chris Schottler , Wade Gehlhoff , Hong Singhania
- Applicant: QingHui Yuan , Chris Schottler , Wade Gehlhoff , Hong Singhania
- Applicant Address: US OH Cleveland
- Assignee: Eaton Corporation
- Current Assignee: Eaton Corporation
- Current Assignee Address: US OH Cleveland
- Agency: Merchant & Gould P.C.
- Main IPC: G05B13/02
- IPC: G05B13/02

Abstract:
A flow control valve includes a housing that includes a fluid inlet, a fluid outlet, a first work port and a second work port. The housing defines a spool bore and a pilot spool bore. A main stage spool is disposed in the spool bore. A pilot stage spool is disposed in the pilot spool bore. The pilot stage spool is in selective fluid communication with the main stage spool. A microprocessor includes a controller having a restricted structured controller and a compensation controller. Outputs of the restricted structured controller and the compensation controller are summed to form an electrical signal that is communicated to the pilot stage spool.
Public/Granted literature
- US20120303141A1 AUTO-TUNING ELECTRO-HYDRAULIC VALVE Public/Granted day:2012-11-29
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