公开(公告)号：US10139216B2

公开(公告)日：2018-11-27

申请号：US15195450

申请日：2016-06-28

Applicant: Eaton Intelligent Power Limited

Inventor： Michael Berne Rannow ,  Stephen D. Smith ,  Jason T. Kraft

IPC: G01L27/00 ,  G01B7/14 ,  F15B19/00 ,  E02F3/34 ,  E02F9/22 ,  E02F9/26 ,  F15B1/027 ,  F15B1/26 ,  F15B11/16

Abstract: An online method for reconfiguring pressure and position sensors in a hydraulic system is disclosed. In one step, a sensor drift condition, a recalibration request, or an unisolated fault condition is detected. In another step, a system pressure sensor or another sensor, such as a load-sense pressure sensor, is verified as a trusted master reference sensor. Another step includes measuring and recording a first pressure reading at the master reference sensor and first voltage readings associated with first, second, third, and fourth pressure slave sensors at a first pump pressure set point. Another step includes, repeating the previous step at a second pump pressure set point. A new gain and offset for each of the first, second, third, and fourth pressure sensors can be calculated based on a comparison of the recoded first and second pressure readings and the recorded first and second voltage readings.