Hydraulic winch control
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United States of America
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Nov 5, 2024
Grant Date -
Jan 19, 2023
app pub date -
Dec 17, 2020
filing date -
Dec 17, 2020
priority date (Note) -
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Abstract
A method for controlling a hydraulic winch includes acquiring measurements from sensors coupled to the hydraulic winch. A first control function is computed based on the measurements. The first control function sets pressure across a variable displacement motor that produces motion of the tool string following a desired motion trajectory. A second control function is computed. The second control function sets displacement of a variable displacement pump that causes the pressure across the variable displacement motor to track the first control function. A pump command is selected based on the second control function. The pump command is transmitted to the variable displacement pump. The tool string moves responsive to the pump command.
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