Device for the roll stabilizing of a watercraft
A device for the roll-stabilization of a watercraft in motion, at anchor, or at zero speed, and/or for influencing the course of the watercraft, includes a fin-carrying shaft on which a guide fin is disposed. For changing an actual angle of attack of the guide fin in the water, the fin-carrying shaft is drivable by an electromechanical drive unit, and the drive unit is disposed on the hull using a base. An electromechanical drive unit is configured with a synchronous motor that drives the fin-carrying shaft using a reducing eccentric transmission. The device thereby has a significantly reduced installation space requirement, causes only slight operating noises, and is also optimally electronically regulable.
1 . A device for the roll-stabilizing of a watercraft in motion, at anchor, or at zero speed, and/or for influencing the course of the watercraft, the watercraft including a hull, the device comprising:
a fin-carrying shaft on which a guide fin is disposed; and
an electromechanical drive unit for changing an actual angle of attack of the guide fin in the water and configured to drive the fin-carrying shaft, the drive unit being disposed on the hull using a base and including a synchronous motor configured to drive the fin-carrying shaft and including a hollow rotor shaft, a reducing eccentric transmission disposed between and axially separating the motor and the fin-carrying shaft and having an input shaft disposed partially within the hollow rotor shaft of the motor, and a coupling connecting the input shaft of the reducing eccentric transmission to the hollow rotor shaft of the motor.
2 . The device according to claim 1 , wherein the eccentric transmission includes two toothed wheels.
3 . The device according to claim 1 , wherein the rotor shaft of the synchronous motor is associated with a locking device.
4 . The device according to claim 1 , wherein the synchronous motor is controlled by power electronics that are controlled by a control and/or regulating device.
5 . The device according to claim 4 , wherein the synchronous motor includes at least one motor sensor that includes a rotor-position sensor for determining a rotor-position angle and a rotational speed sensor for determining a number n of rotations of the rotor shaft.
6 . The device according to claim 5 , wherein an actual angle of attack of the fin-carrying shaft is directly capturable using a rotational angle sensor configured for detecting at least one full rotation of the fin-carrying shaft.
7 . The device according to claim 6 , wherein the rotor-position sensor and/or the rotational angle sensor are each embodied as an absolute sensor.
8 . The device according to claim 6 , wherein the control and/or regulating device triggers a warning signal and/or a recalibration when a deviation between the calculated target angle of attack and the actual angle of attack measured using the rotational angle sensor exceeds a predetermined value.
9 . The device according to claim 5 , wherein a target angle of attack of the guide fin is calculable based on the rotor-position angle using the control and/or regulating device.
10 . The device according to claim 1 , wherein a rotor shaft of the synchronous motor, an input shaft of the eccentric transmission, an output shaft of the eccentric transmission and the fin-carrying shaft are essentially aligned with respect to each other.
11 . The device according to claim 1 , wherein the device is disposed on the hull of the watercraft such that an influencing of the course of the watercraft is realizable in the manner of a rudder blade.
12 . A device for the roll-stabilizing of a watercraft in motion, at anchor, or at zero speed, and/or for influencing the course of the watercraft, the watercraft including a hull, the device comprising:
a fin-carrying shaft on which a guide fin is disposed; and
an electromechanical drive unit for changing an actual angle of attack of the guide fin in the water and configured to drive the fin-carrying shaft, the drive unit being disposed on the hull using a base and including a synchronous motor configured to drive the fin-carrying shaft using a reducing eccentric transmission;
wherein the synchronous motor is controlled by power electronics that are controlled by a control and/or regulating device and includes at least one motor sensor that includes a rotor-position sensor for determining a rotor-position angle and a rotational speed sensor for determining a number n of rotations of the rotor shaft; and
wherein an actual angle of attack of the fin-carrying shaft is directly capturable using a rotational angle sensor configured for detecting at least one full rotation of the fin-carrying shaft and the control and/or regulating device triggers a warning signal and/or a recalibration when a deviation between the calculated target angle of attack and the actual angle of attack measured using the rotational angle sensor exceeds a predetermined value.