Method and system for generating an alert relating to a hydraulic actuation system
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United States of America Patent
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Oct 6, 2020
Grant Date -
Sep 8, 2016
app pub date -
Mar 4, 2016
filing date -
Mar 6, 2015
priority date (Note) -
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Abstract
There is disclosed a method of generating an alert relating to a hydraulic actuation system for actuating a hydraulic cylinder, the hydraulic control system comprising a hydraulic fluid tank and a hydraulic fluid filter. The method comprises monitoring the pressure drop over the hydraulic fluid filter; determining a rate of change characteristic relating to the rate of change of pressure drop over at least one time period in which there is a hydraulic fluid flow through the hydraulic fluid filter; determining whether the hydraulic fluid is dirty based on at least the rate of change characteristic; and generating an alert if it is determined that the hydraulic fluid is dirty.
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