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US 12,460,482 B2Granted
Absolute linear position for downhole tool using rotary potentiometer
AssigneeHalliburton Energy Services, Inc.
InventorsHock Soon Tiew, Kar Ki Andrew Loh, How Jiun Irvin Yuen, Simon Whye Kwong Wai
Life of this patent
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Abstract
A method, that includes obtaining a calibration curve, reading a voltage from a rotary potentiometer, and calculating an extension length of an actuator shaft, using the voltage and the calibration curve, where a potentiometer shaft, of the rotary potentiometer, is coupled to a potentiometer gearbox, where the potentiometer gearbox is coupled to a motor, and where the motor is coupled to the actuator shaft.
Claims20
A method, comprising:
- obtaining a calibration curve that correlates an output voltage of a rotary potentiometer with an extension length of an actuator shaft;
- reading the output voltage from the rotary potentiometer;
- and
- calculating the extension length of the actuator shaft, using the output voltage and the calibration curve,
- wherein a potentiometer shaft, of the rotary potentiometer, is coupled to a potentiometer gearbox,
- wherein the potentiometer gearbox is coupled to a motor, and
- wherein the motor is coupled to the actuator shaft.
4 more elements
A system, comprising:
- a stroker actuator comprising an actuator shaft;
- a motor coupled to the stroker actuator;
- a potentiometer gearbox coupled to the motor;
- a rotary potentiometer comprising a potentiometer shaft, wherein the potentiometer shaft is coupled to the potentiometer gearbox;
- and
- an information handling system configured for:
- obtaining a calibration curve that correlates an output voltage of the rotary potentiometer with an extension length of the actuator shaft;
- reading the output voltage from the rotary potentiometer;
- and
- calculating the extension length of the actuator shaft, using the output voltage and the calibration curve.
7 more elements
Dependencies are inferred from the claim text.