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:
Apr. 23, 2019
Filed:
Mar. 08, 2017
Husco International, Inc., Waukesha, WI (US);
Joseph L Pfaff, Wauwatosa, WI (US);
HUSCO International, Inc., Waukesha, WI (US);
Abstract
Systems and methods for calibration of an electrohydraulic control valve are provided. In one aspect, a method for calibrating an electrohydraulic control valve includes providing fluid communication between the pump and the reservoir through a bypass calibration orifice. The bypass calibration orifice defines a known restriction. The method further includes measuring a pressure drop across the bypass calibration orifice, commanding the electrohydraulic control valve, calculating a pressure drop across the electrohydraulic control valve, recording the command applied to the electrohydraulic control valve corresponding with the calculated pressure drop across the electrohydraulic control valve, and calibrating the electrohydraulic control valve based on at least two of the recorded command, the known restriction, the measured pressure drop across the bypass calibration orifice, and the calculated pressure drop across the electrohydraulic control valve.