Cycloidal dynamic propulsion or positioning system for a ship

A cycloidal dynamic propulsion or positioning system for a ship sitting in water that exhibits a direction of flow, said cycloidal dynamic propulsion or positioning system comprising:

• a frame;
• a rotor mounted to be movable in rotation on the frame about a main axis at right angles to the direction of flow, and comprising a plurality of arms extending radially with respect to the main axis;
• a main motor equipped with a rotary coder and driving said rotor in rotation;
• for each arm, a blade mounted to be movable in rotation on the arm about a secondary axis parallel to the main axis;
• for each blade, a secondary motor equipped with a rotary coder and driving said blade in rotation;
• for at least one blade, a load sensor arranged to be able to evaluate the loads which are exerted on the blade;
• a control unit connected to each rotary coder, to the load sensor and to each motor and controlling the rotation of each motor in terms of both angle and speed;
• and
• a displacement system controlled by the control unit and intended to displace the blade and the associated secondary motor along the arm.

A cycloidal dynamic propulsion or positioning system for a ship sitting in water that exhibits a direction of flow, said cycloidal dynamic propulsion or positioning system comprising:

• a frame;
• a rotor mounted to be movable in rotation on the frame about a main axis at right angles to the direction of flow, and comprising a plurality of arms extending radially with respect to the main axis;
• a main motor equipped with a rotary coder and driving said rotor in rotation;
• for each arm, a blade mounted to be movable in rotation on the arm about a secondary axis parallel to the main axis;
• for each blade, a secondary motor equipped with a rotary coder and driving said blade in rotation;
• for at least one blade, a load sensor arranged to be able to evaluate the loads which are exerted on the blade;
• a control unit connected to each rotary coder, to the load sensor and to each motor and controlling the rotation of each motor in terms of both angle and speed;
• and
• a displacement system controlled by the control unit and intended to displace the blade and the associated secondary motor along the arm, wherein the displacement system comprises:
• for each arm, an additional arm fixed to the rotor parallel to said arm,
• a runner secured to the secondary motor, and mounted to slide on the arm and the additional arm,
• a drive system which is connected and controlled by the control unit to displace the runner along the arms.