Method for maneuvering a marine vessel in response to a manually operable control device
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B63H-025/10
B63H-025/06
B63H-025/02
B63H-025/00
출원번호
US-0248482
(2005-10-12)
등록번호
US-7267068
(2007-09-11)
발명자
/ 주소
Bradley,Eric
Konopacki,Jeffery M.
Thaxton,Carter J.
출원인 / 주소
Brunswick Corporation
인용정보
피인용 횟수 :
58인용 특허 :
22
초록▼
A marine vessel is maneuvered by independently rotating first and second marine propulsion devices about their respective steering axes in response to commands received from a manually operable control device, such as a joystick. The marine propulsion devices are aligned with their thrust vectors in
A marine vessel is maneuvered by independently rotating first and second marine propulsion devices about their respective steering axes in response to commands received from a manually operable control device, such as a joystick. The marine propulsion devices are aligned with their thrust vectors intersecting at a point on a centerline of the marine vessel and, when no rotational movement is commanded, at the center of gravity of the marine vessel. Internal combustion engines are provided to drive the marine propulsion devices. The steering axes of the two marine propulsion devices are generally vertical and parallel to each other. The two steering axes extend through a bottom surface of the hull of the marine vessel.
대표청구항▼
We claim: 1. A method for maneuvering a marine vessel, comprising the steps of: providing a first marine propulsion device which is rotatable about a first steering axis; providing a second marine propulsion device which is rotatable about a second steering axis; providing a manually operable contr
We claim: 1. A method for maneuvering a marine vessel, comprising the steps of: providing a first marine propulsion device which is rotatable about a first steering axis; providing a second marine propulsion device which is rotatable about a second steering axis; providing a manually operable control device which is configured to provide an output signal which is representative of a desired movement of said marine vessel; resolving said desired movement of said marine vessel into a target linear thrust and a target moment about a preselected point of said marine vessel; determining a first rotational position of said first marine propulsion device about said first steering axis, a second rotational position of said second marine propulsion device about said second steering axis, a first magnitude and first direction of thrust for said first marine propulsion device, and a second magnitude and second direction of thrust for said second marine propulsion device which will result in achievement of said target linear thrust and said target moment about said preselected point of said marine vessel; rotating said first and second marine propulsion devices to said first and second rotational positions about said first and second steering axes, respectively; causing said first and second marine propulsion devices to produce said first and second magnitudes and directions of thrust, respectively, wherein one of said directions of thrust is forward thrust produced by a first rotating propeller, and the other of said directions of thrust is reverse thrust produced by a second rotating propeller, and wherein the absolute magnitudes of said forward and reverse thrusts are unequal when said propellers rotate at the same rotational speed, due to hydrodynamic effects of a propeller between forward and reverse directions of rotation, and comprising performing a calibration procedure comprising: determining a distance of length L between a line connecting said first and second steering axes and an initially presumed center of gravity of said vessel; aligning said first and second propulsion devices along respective thrust direction axes which intersect at said initially presumed center of gravity; applying said first and second thrusts to achieve expected sidle movement; if rotation of said vessel occurs, then assuming said length L is incorrect, and changing L to a new currently assumed center of gravity, and repeating the above procedure until said sidle movement occurs without rotation of said vessel about said currently assumed center of gravity, whereupon it is concluded that said currently assumed center of gravity and the magnitude of length L are correct. 2. The method of claim 1, further comprising: providing a first internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said first marine propulsion device; and providing a second internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said second marine propulsion device. 3. The method of claim 2, wherein: said first and second internal combustion engines are diesel engines. 4. The method of claim 2, wherein: said first and second internal combustion engines are the sole providers or torque to said first and second marine propulsion devices, respectively. 5. The method of claim 1, wherein: said first and second rotational positions result in said first and second marine propulsion devices producing first and second thrust vectors which intersect at a point located on a centerline which extends from a bow to a stem of said marine vessel. 6. The method of claim 5, wherein: said first and second thrust vectors intersect at said preselected point of said marine vessel when said target moment is equal to zero. 7. The method of claim 5, wherein: said first and second thrust vectors intersect at a point on said centerline other than said preselected point of said marine vessel when said target moment has an absolute value greater than zero. 8. The method of claim 1, wherein: said manually operable control device is a joystick. 9. The method of claim 8, wherein: said first marine propulsion device is located on a port side of said centerline and said second marine propulsion device is located on a starboard side of said centerline. 10. The method of claim 9, wherein: said first marine propulsion device comprises a first propeller attached to a rear portion of said first marine propulsion device to provide a pushing thrust on said first marine propulsion device when said first propeller is rotated in a forward direction; and said second marine propulsion device comprises a second propeller attached to a rear portion of said second marine propulsion device to provide a pushing thrust on said second marine propulsion device when said second propeller is rotated in a forward direction. 11. The method of claim 1, wherein: said first and second steering axes are generally parallel to each other. 12. The method of claim 1, wherein: said preselected point of said marine vessel is a center of gravity of said marine vessel. 13. The method of claim 5, wherein: said first and second rotational positions of said first and second marine propulsion devices are symmetrical about said centerline. 14. A method for maneuvering a marine vessel, comprising the steps of: providing a first marine propulsion device which is rotatable about a first vertical steering axis which extends through a lower surface of a hull of said marine vessel; providing a second marine propulsion device which is rotatable about a second vertical steering axis which extends through said lower surface of said hull of said marine vessel; providing a first internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said first marine propulsion device; providing a second internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said second marine propulsion device; resolving a desired movement of said marine vessel into a target linear thrust and a target moment about a preselected point of said marine vessel; determining a first rotational position of said first marine propulsion device about said first vertical steering axis, a second rotational position of said second marine propulsion device about said second vertical steering axis, a first magnitude and first direction of thrust for said first marine propulsion device, and a second magnitude and second direction of thrust for said second marine propulsion device which will result in achievement of said target linear thrust and said target moment about said preselected point of said marine vessel; rotating said first and second marine propulsion devices to said first and second rotational positions about said first and second vertical steering axes, respectively; causing said first and second marine propulsion devices to produce said first and second magnitudes and directions of thrust, respectively, said first and second rotational positions resulting in said first and second marine propulsion devices producing first and second thrust vectors which intersect at a point located on a centerline which extends from a bow to a stem of said marine vessels, wherein one of said directions of thrust is forward thrust produced by a first rotating propeller, and the other of said directions of thrust is reverse thrust produced by a second rotating propeller, and wherein the absolute magnitudes of said forward and reverse thrusts are unequal when said propellers rotate at the same rotational speed, due to hydrodynamic effects of a propeller between forward and reverse directions of rotation, and comprising performing a calibration procedure comprising: determining a distance of length L between a line connecting said first and second steering axes and an initially presumed center of gravity of said vessel; aligning said first and second propulsion devices along respective thrust direction axes which intersect at said initially presumed center of gravity; applying said first and second thrusts to achieve expected sidle movement; if rotation of said vessel occurs, then assuming said length L is incorrect, and changing L to a new currently assumed center of gravity, and repeating the above procedure until said sidle movement occurs without rotation of said vessel about said currently assumed center of gravity, whereupon it is concluded that said currently assumed center of gravity and the magnitude of length L are correct. 15. The method of claim 14, wherein: said first and second internal combustion engines are diesel engines. 16. The method of claim 15, wherein: said first and second internal combustion engines are the sole providers or torque to said first and second marine propulsion devices, respectively. 17. The method of claim 14, further comprising: providing a manually operable control device which is configured to provide an output signal which is representative of said desired movement of said marine vessel. 18. The method of claim 17, wherein: said first and second thrust vectors intersect at said preselected point of said marine vessel when said target moment is equal to zero, said preselected point of said marine vessel being a center of gravity of said marine vessel. 19. The method of claim 18, wherein: said first and second thrust vectors intersect at a point on said centerline other than said preselected point of said marine vessel when said target moment has an absolute value greater than zero. 20. The method of claim 17, wherein: said manually operable control device is a joystick. 21. The method of claim 14, wherein: said first marine propulsion device is located on a port side of said centerline and said second marine propulsion device is located on a starboard side of said centerline. 22. The method of claim 21, wherein: said first marine propulsion device comprises a first propeller attached to a rear portion of said first marine propulsion device to provide a pushing thrust on said first marine propulsion device when said first propeller is rotated in a forward direction; and said second marine propulsion device comprises a second propeller attached to a rear portion of said second marine propulsion device to provide a pushing thrust on said second marine propulsion device when said second propeller is rotated in a forward direction. 23. The method of claim 14, wherein: said first and second rotational positions of said first and second marine propulsion devices are symmetrical about said centerline. 24. A method for maneuvering a marine vessel, comprising the steps of: providing a first marine propulsion device which is rotatable about a first steering axis; providing a second marine propulsion device which is rotatable about a second steering axis; resolving a desired movement of said marine vessel into a target linear thrust and a target moment about a center of gravity of said marine vessel; determining a first rotational position of said first marine propulsion device about said first steering axis, a second rotational position of said second marine propulsion device about said second steering axis, a first magnitude and first direction of thrust for said first marine propulsion device, and a second magnitude and second direction of thrust for said second marine propulsion device which will result in achievement of said target linear thrust and said target moment about center of gravity of said marine vessel; rotating said first and second marine propulsion devices to said first and second rotational positions about said first and second steering axes, respectively; causing said first and second marine propulsion devices to produce said first and second magnitudes and directions of thrust, respectively, said first and second rotational positions resulting in said first and second marine propulsion devices producing first and second thrust vectors which intersect at a point located on a centerline which extends from a bow to a stern of said marine vessels, wherein one of said directions of thrust is forward thrust produced by a first rotating propeller, and the other of said directions of thrust is reverse thrust produced by a second rotating propeller, and wherein the absolute magnitudes of said forward and reverse thrusts are unequal when said propellers rotate at the same rotational speed, due to hydrodynamic effects of a propeller between forward and reverse directions of rotation, and comprising performing a calibration procedure comprising: determining a distance of length L between a line connecting said first and second steering axes and an initially presumed center of gravity of said vessel; aligning said first and second propulsion devices along respective thrust direction axes which intersect at said initially presumed center of gravity; applying said first and second thrusts to achieve expected sidle movement; if rotation of said vessel occurs, then assuming said length L is incorrect, and changing L to a new currently assumed center of gravity, and repeating the above procedure until said sidle movement occurs without rotation of said vessel about said currently assumed center of gravity, whereupon it is concluded that said currently assumed center of gravity and the magnitude of length L are correct. 25. The method of claim 24, further comprising: providing a first internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said first marine propulsion device; and providing a second internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said second marine propulsion device. 26. The method of claim 25, wherein: said first and second internal combustion engines are diesel engines. 27. The method of claim 25, wherein: said first and second internal combustion engines are the sole providers or torque to said first and second marine propulsion devices, respectively. 28. The method of claim 24, further comprising: providing a manually operable control device which is configured to provide an output signal which is representative of said desired movement of said marine vessel. 29. The method of claim 28, wherein: said manually operable control device is a joystick. 30. The method of claim 29, wherein: said first and second thrust vectors intersect at said center of gravity of said marine vessel when said target moment is equal to zero. 31. The method of claim 30, wherein: said first and second thrust vectors intersect at a point on said centerline other than said center of gravity of said marine vessel when said target moment has an absolute value greater than zero. 32. The method of claim 31, wherein: said first marine propulsion device is located on a port side of said centerline and said second marine propulsion device is located on a starboard side of said centerline. 33. The method of claim 32, wherein: said first marine propulsion device comprises a first propeller attached to a rear portion of said first marine propulsion device to provide a pushing thrust on said first marine propulsion device when said first propeller is rotated in a forward direction; and said second marine propulsion device comprises a second propeller attached to a rear portion of said second marine propulsion device to provide a pushing thrust on said second marine propulsion device when said second propeller is rotated in a forward direction. 34. The method of claim 24, wherein: said first steering axis extends through a lower surface of a hull of said marine vessel; and said second steering axis extends through said lower surface of said hull of said marine vessel. 35. The method of claim 34, wherein: said first and second steering axes are generally parallel to each other. 36. The method of claim 24, wherein: said first and second steering axes are both generally vertical. 37. The method of claim 24, wherein: said first and second rotational positions of said first and second marine propulsion devices are symmetrical about said centerline. 38. A method for maneuvering a marine vessel, comprising the steps of: providing a first marine propulsion device which is rotatable about a first generally vertical steering axis which extends through a lower surface of a hull of said marine vessel; providing a second marine propulsion device which is rotatable about a second generally vertical steering axis which extends through said lower surface of said hull of said marine vessel; providing a first internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said first marine propulsion device; providing a second internal combustion engine disposed within said hull of said marine vessel and connected in torque transmitting relation with said second marine propulsion device, said first and second internal combustion engines being the sole provider of torque to said first and second marine propulsion devices, respectively; providing a manually operable control device which is configured to provide an output signal which is representative of a desired movement of said marine vessel; resolving said desired movement of said marine vessel into a target linear thrust and a target moment about a center of gravity of said marine vessel; determining a first rotational position of said first marine propulsion device about said first steering axis, a second rotational position of said second marine propulsion device about said second steering axis, a first magnitude and first direction of thrust for said first marine propulsion device, and a second magnitude and second direction of thrust for said second marine propulsion device which will result in achievement of said target linear thrust and said target moment about said center of gravity of said marine vessel; rotating said first and second marine propulsion devices to said first and second rotational positions about said first and second steering axes, respectively; causing said first and second marine propulsion devices to produce said first and second magnitudes and directions of thrust, respectively, said first and second rotational positions resulting in said first and second marine propulsion devices producing first and second thrust vectors which intersect at a point located on a centerline which extends from a bow to a stern of said marine vessel, said first and second thrust vectors intersecting at said center of gravity of said marine vessel when said target moment is equal to zero, said first and second thrust vectors intersecting at a point on said centerline other than said center of gravity of said marine vessel when said target moment has an absolute value greater than zero, said first marine propulsion device being located on a port side of said centerline and said second marine propulsion device being located on a starboard side of said centerlines, wherein one of said directions of thrust is forward thrust produced by a first rotating propeller, and the other of said directions of thrust is reverse thrust produced by a second rotating propeller, and wherein the absolute magnitudes of said forward and reverse thrusts are unequal when said propellers rotate at the same rotational speed, due to hydrodynamic effects of a propeller between forward and reverse directions of rotation, and comprising performing a calibration procedure comprising: determining a distance of length L between a line connecting said first and second steering axes and an initially presumed center of gravity of said vessel; aligning said first and second propulsion devices along respective thrust direction axes which intersect at said initially presumed center of gravity; applying said first and second thrusts to achieve expected sidle movement; if rotation of said vessel occurs, then assuming said length L is incorrect, and changing L to a new currently assumed center of gravity, and repeating the above procedure until said sidle movement occurs without rotation of said vessel about said currently assumed center of gravity, whereupon it is concluded that said currently assumed center of gravity and the magnitude of length L are correct. 39. The method of claim 38, wherein: said first and second internal combustion engines are diesel engines. 40. The method of claim 38, wherein: said manually operable control device is a joystick. 41. The method of claim 40, wherein: said first marine propulsion device comprises a first propeller attached to a rear portion of said first marine propulsion device to provide a pushing thrust on said first marine propulsion device when said first propeller is rotated in a forward direction; and said second marine propulsion device comprises a second propeller attached to a rear portion of said second marine propulsion device to provide a pushing thrust on said second marine propulsion device when said second propeller is rotated in a forward direction. 42. The method of claim 41, wherein: said first and second rotational positions of said first and second marine propulsion devices are symmetrical about said centerline.
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