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US 11,105,384 B2Granted
Magnetorheological braking for well tubulars
AssigneeExxonMobil Upstream Research Company
InventorsMichael C. Romer, Jeff H. Moss
Life of this patent
Estimating the term…
Abstract
Systems and a method for braking an object are provided. An example method, includes determining the expected speed of the object, monitoring the expected speed of the object, and determining if the actual speed of the object is within a preset tolerance of the expected speed. If the speed is not within the preset tolerance of the expected speed, a magnetorheological brake is activated to slow the object.
Claims24
A method for braking an object, comprising:
- determining an expected speed of the object;
- monitoring an actual speed of the object;
- determining if the actual speed of the object is within a preset tolerance of the expected speed;
- and
- activating a magnetorheological brake to slow the object if the speed is not within the preset tolerance of the expected speed.
2 more elements
A controller for a magnetorheological brake, comprising:
- a processor;
- a magnet controller communicatively coupled to the processor, wherein the magnet controller is configured to energize electromagnets in a magnetorheological braking system;
- a sensor input/output system communicatively coupled to the processor, wherein the sensor input/output system is configured to interface to a motion sensor;
- and
- a data store communicatively coupled to the processor, wherein the data store comprises instructions that, when executed by the processor, direct the processor to:
- read the motion sensor to determine a speed of an object;
- compare the speed of the object to a set point;
- and
- energize the electromagnets to slow the motion of the object.
6 more elements
A magnetorheological braking system, comprising:
- a velocity sensor configured to detect a velocity of an object;
- a magnetorheological brake comprising a magnetorheological fluid (MRF) reservoir and electromagnets disposed proximate to the MRF reservoir, wherein the magnetorheological brake is configured to slow or stop the object when the electromagnets are energized;
- and
- a controller, comprising:
- a processor configured to implement instructions from a data store;
- and
- the data store, comprising instructions to direct the processor to:
- read the velocity for the object from the velocity sensor;
- compare the velocity to preset limits for the velocity;
- and
- energize the electromagnets if the velocity is outside of the preset limits.
8 more elements
Dependencies are inferred from the claim text.