Control system of an actuator for the actuation of submarine devices
AssigneeCameron International Corporation
InventorsCarlo Liberale, Fabio Imperiali
Life of this patent
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Abstract
Electronic control system for a submarine actuator, said actuator comprising a container body, from which a drive shaft projects that is suitable for inserting in a seat of said submarine device. The system comprises an electronic control board for at least one electric motor arranged inside said container body suitable for moving said drive shaft.
Claims19
An electronic control system for a submarine actuator, the actuator comprising a container body from which a drive shaft projects that is suitable for inserting in a seat of the submarine device, the system comprises an electronic control board for at least one electric motor, arranged inside the container body suitable for moving the drive shaft, the electronic control board being suitable for receiving an electrical control signal for the actuator, generated by a remote control station, characterized in that the actuator comprises two electric motors associated with the drive shaft and the electronic control board is suitable for controlling each motor independently from the other, wherein the electronic control board comprises a pilot circuit, for the at least one motor, a power supply circuit and a programmable logic unit, wherein the electronic control board comprises a first retroaction circuit of the current absorbed by the motor between the programmable logic unit and the pilot circuit.
A system, comprising:
- a submersible actuator, comprising:
- a first electric motor;
- a second electric motor;
- and
- a control circuit configured to control the first and second electric motors independently from one another to actuate a submersible flow control mechanism, wherein the control circuit is responsive to a control signal from a remote control station, wherein the control circuit comprises a filtering block configured to compare a value of the control signal with an average of a predetermined number of previous control signals.
A method, comprising:
- controlling a first electric motor of a submersible actuator to actuate a submersible flow control mechanism;
- independently controlling a second electric motor of the submersible actuator to actuate the submersible flow control mechanism;
- and
- controlling a speed value and a direction for rotation of the first or second electric motor based on a target shaft position and a current shaft position sensed by a position sensor.
Dependencies are inferred from the claim text.