Position Controller For Pilot Operated Electrohydraulic Valves

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 position controller module a velocity transform module and a dynamic offset module. The controller is configured to implement a training process and to compensate for viscosity changes in the working fluid based on data obtained during the training process. Outputs of the controller are communicated to the pilot stage spool.

Patent Information

Application #

Filing Date

13 February 2014

Publication Number

18/2014

Publication Type

INA

Invention Field

ELECTRICAL

Status

Email

Parent Application

Applicants

EATON CORPORATION

1111 Superior Avenue Eaton Center Cleveland OH 44114 2584

Inventors

1. ANDERSON Robb Gary

17738 Haralson Drive Eden Prairie MN 55347

Specification

Documents

Application Documents

#	Name	Date
1	GPA.pdf	2014-02-21
2	FOA.pdf	2014-02-21
3	F5.pdf	2014-02-21
4	F3.pdf	2014-02-21
5	F2.pdf	2014-02-21
6	DW.pdf	2014-02-21
7	320-KOLNP-2014.pdf	2014-03-05
8	320-KOLNP-2014-(16-04-2014)-CORRESPONDENCE.pdf	2014-04-16
9	320-KOLNP-2014-(16-04-2014)-ASSIGNMENT.pdf	2014-04-16
10	320-KOLNP-2014-FORM-18.pdf	2014-05-20
11	320-KOLNP-2014-(19-08-2014)-CORRESPONDENCE.pdf	2014-08-19
12	320-KOLNP-2014-(19-08-2014)-ANNEXURE TO FORM 3.pdf	2014-08-19
13	320-KOLNP-2014-FER.pdf	2018-07-04
14	320-KOLNP-2014-AbandonedLetter.pdf	2019-01-21

Search Strategy

1	searchstrategies320_12-06-2018.pdf