1. A main rotor drive for a helicopter, the main rotor drive comprising:
an electric motor for directly powering a main rotor of the helicopter; and
a mounting device for hinging the electric motor to a helicopter cell;
wherein the mounting device is configured to allow the electric motor along with the main rotor to be pivoted relative to the helicopter cell; and
wherein the mounting device comprises a tilting mounting device with a tilting bearing and a tilting actuator,
wherein the tilting bearing comprises a transverse axis from which the electric motor is suspended; and
wherein the electric motor is configured to be tilted around the transverse axis.
2. The main rotor drive of claim 1, wherein the electric motor comprises a plurality of stators and rotors arranged axially.
3. The main rotor drive of claim 1, wherein the mounting device comprises a gimbaled mounting device.
4. The main rotor drive of claim 1, further comprising: an active flap controller for diminishing the vibrations of the main rotor.
5. A main rotor drive for a helicopter, the main rotor drive comprising:
an electric motor for directly powering a main rotor of the helicopter; and
a mounting device for hinging the electric motor to a helicopter cell;
wherein the mounting device is configured to allow the electric motor along with the main rotor to be pivoted relative to the helicopter cell,
wherein the mounting device is configured to excite a specific oscillation mode of the electric motor, wherein the mounting device is configured to generate an anti-phase oscillation for canceling an original oscillation, and,
wherein the mounting device comprises a tilting mounting device with a tilting bearing and a tilting actuator.
6. The main rotor drive of claim 5, wherein the electric motor comprises a plurality of stators and rotors arranged axially.
7. The main rotor drive of claim 5, wherein the mounting device comprises a gimbaled mounting device.
8. The main rotor drive of claim 5, further comprising: an active flap controller for diminishing the vibrations of the main rotor.
9. A tail rotor drive for a helicopter, the tail rotor drive comprising:
a motor housing comprising an inner ring and an outer ring;
an electric motor for directly powering a tail rotor of the helicopter;
wherein rotor blades of the tail rotor are clamped between the inner ring and the outer ring, and
wherein the tail rotor drive is configured to pivot around a vertical axis to achieve a vector control.
10. A helicopter comprising at least one of a main rotor drive and a tail rotor drive wherein the main rotor drive comprises:
an electric motor for directly powering a main rotor of the helicopter; and
a mounting device for hinging the electric motor to a helicopter cell;
wherein the mounting device is configured to allow the electric motor along with the main rotor to be pivoted relative to the helicopter cell; and
wherein the mounting device is configured to excite a specific oscillation mode of the electric motor, wherein the mounting device is configured to generate an anti-phase oscillation for canceling an original oscillation;
wherein the tail rotor drive comprises:
an electric motor for directly powering a tail rotor of the helicopter;
wherein the tail rotor drive is configured to pivot around a vertical axis to achieve a vector control.
11. The helicopter of claim 10, further comprising: a motor-generator unit for generating electric energy to operate the electric motors.
12. The helicopter of claim 11, wherein the motor-generator unit is arranged under the cabin of the helicopter.
13. A method for powering at least one of a main rotor and a tail rotor of a helicopter, the method comprising:
directly powering the main rotor of the helicopter or the tail rotor of the helicopter with an electric motor; and
pivoting the electric motor along with the main rotor relative to a helicopter cell around a transverse axis from which the electric motor is suspended; and
wherein the tail rotor drive is configured to pivot around a vertical axis to achieve a vector control.
14. The method of claim 13, further comprising: pivoting the electric motor along with the main rotor relative to the helicopter cell while the helicopter is in flight.
15. The method of claim 13, further comprising: pivoting the tail rotor around a vertical axis to achieve a vector control.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An alarm device that generates an alarm when a distance between a vehicle and an object that exists in a set region in front of the vehicle is smaller than a set distance, comprising a controller that:
determines a tentative set distance based on at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object; and
corrects the determined tentative set distance, based on at least a deceleration of the vehicle, so as to determine a final set distance.
2. The alarm device according to claim 1, wherein the controller sets a correction value used for correcting the determined tentative set distance, to a smaller value, as the deceleration of the vehicle increases.
3. The alarm device according to claim 1, wherein the controller determines at least one of the tentative set-distance and the final set-distance taking account of a relative positional relationship between the vehicle and the object, which relationship is requested by a vehicle operator.
4. The alarm device according to claim 2, wherein the controller determines at least one of the tentative set distance and the final set distance taking account of a relative positional relationship between the vehicle and the object, which relationship is requested by a vehicle operator.
5. The alarm device according to claim 1, wherein the controller determines at least one of the tentative set distance and the final set distance with reference to at least one map.
6. A running control apparatus, comprising:
an alarm device as defined in claim 1; and
a running controller that controls a running state of the vehicle based on a relative positional relationship between the vehicle and the object.
7. The running control apparatus according to claim 6, wherein the running controller performs cruise control that controls the running state of the vehicle so that the vehicle and a preceding vehicle as the object are kept in a relative relationship that is requested by a vehicle operator.
8. The running control apparatus according to claim 6, wherein the running controller performs deceleration control that decelerates the vehicle by applying a brake so as to restrain rotation of a wheel of the vehicle.
9. An alarm device that generates an alarm when a distance between a vehicle and an object that exists in a set region in front of the vehicle is smaller than a set distance, comprising a controller that:
determines a tentative set distance based on at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object; and
corrects the determined tentative set distance, based on at least a relative deceleration between the vehicle and the object, so as to determine a final set distance.
10. The alarm device according to claim 9, wherein the controller determines the final set distance by correcting the determined tentative set distance based on both a deceleration of the vehicle and the relative deceleration between the vehicle and the object.
11. The alarm device according to claim 9, wherein the controller sets a correction value for correcting the determined tentative set distance, to a smaller value, as a tendency of the vehicle to be separated from the object becomes stronger.
12. The alarm device according to claim 9, wherein the controller determines at least one of the tentative set distance and the final set distance with reference to at least one map.
13. A running control apparatus, comprising:
an alarm device as defined in claim 9; and
a running controller that controls a running state of the vehicle based on a relative positional relationship between the vehicle and the object.
14. The running control apparatus according to claim 13, wherein the running controller performs cruise control that controls the running state of the vehicle so that the vehicle and a preceding vehicle as the object are kept in a relative relationship that is requested by a vehicle operator.
15. The running control apparatus according to claim 13, wherein the running controller performs deceleration control that decelerates the vehicle by applying a brake so as to restrain rotation of a wheel of the vehicle.
16. An alarm device that generates an alarm when a distance between a vehicle and an object that exists in a set region in front of the vehicle is smaller than a set distance, comprising:
a controller that determines the set distance based on (a) at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object, (b) a deceleration of the vehicle, and (c) a relative deceleration between the vehicle and the object.
17. An alarm device that generates an alarm when a distance between a vehicle and an object that exists in a set region in front of the vehicle is smaller than a set distance, comprising:
a controller that determines the set distance based on (a) at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object, and (b) a relative deceleration between the vehicle and the object.
18. An alarm device that generates an alarm when a relative positional relationship between a vehicle and an object that exists in a set region in front of the vehicle represents a tendency of the vehicle to approach the object as compared with a set relative positional relationship, comprising a controller that:
determines a tentative set relative positional relationship based on at least one of a running speed of the vehicle and a relative velocity between the vehicle and the object; and
corrects the determined tentative set relative positional relationship, based on at least one of a deceleration of the vehicle and a relative deceleration between the vehicle and the object, so as to determine a final set relative positional relationship.