Method, system and computer program for controlling propulsion of a drilling rig as well as a drilling rig
First Claim
1. A method for controlling propulsion of a drilling rig, said drilling rig comprising a right propulsion unit and a left propulsion unit and mutually independent speed control and a transmission for driving said right propulsion unit and left propulsion unit, said transmission providing at least two gear states of a gearbox, the method comprising:
- requesting a propulsion speed for said right propulsion unit and for said left propulsion unit,determining a difference between a requested propulsion speed of said right propulsion unit and said left propulsion unit; and
determining suitable gear state on the basis of the thus determined difference.
2 Assignments
0 Petitions
Accused Products
Abstract
A method for controlling propulsion of a drilling rig. The drilling rig includes a right propulsion unit and a left propulsion unit and mutually independent speed control and a transmission for driving the right propulsion unit and the left propulsion unit. The transmission provides at least two gear states of a gear box. A propulsion speed is request for the right propulsion unit and for the left propulsion unit. A difference is determined between a requested propulsion speed of the right propulsion unit and the left propulsion unit. A suitable gear state is determined based on the determined difference. Also a computer program product including program code for a computer for implementing the method. A system and a drilling rig equipped with the system.
8 Citations
22 Claims
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1. A method for controlling propulsion of a drilling rig, said drilling rig comprising a right propulsion unit and a left propulsion unit and mutually independent speed control and a transmission for driving said right propulsion unit and left propulsion unit, said transmission providing at least two gear states of a gearbox, the method comprising:
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requesting a propulsion speed for said right propulsion unit and for said left propulsion unit, determining a difference between a requested propulsion speed of said right propulsion unit and said left propulsion unit; and determining suitable gear state on the basis of the thus determined difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling propulsion of a drilling rig, said drilling rig comprising a right propulsion unit and a left propulsion unit and mutually independent speed control and a transmission for driving said right propulsion unit and said left propulsion unit, said transmission providing at least two gear states of a gear box, the system comprising:
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an actuator for requesting propulsion speed for said right propulsion unit and for said left propulsion unit, a first control for determining a difference between a requested propulsion speed of said right propulsion unit and said left propulsion unit; and a second control for determining suitable gear state on the basis of the thus determined difference. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification