[특허]Systems and methods for automatically controlling attitude of a marine vessel with trim devices

Systems and methods for automatically controlling attitude of a marine vessel with trim devices 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B63H-020/10 B63H-021/22 B63J-099/00 G05D-003/12
출원번호	US-0873803 (2015-10-02)
등록번호	US-9919781 (2018-03-20)
발명자 / 주소	Andrasko, Steven J. Przybyl, Andrew J. Anschuetz, Steven M.
출원인 / 주소	Brunswick Corporation
대리인 / 주소	Andrus Intellectual Property Law, LLP
인용정보	피인용 횟수 : 0 인용 특허 : 96

초록 ▼

Systems and methods disclosed herein control position of a trimmable drive unit with respect to a marine vessel. A controller determines a target trim position as a function of vessel or engine speed. An actual trim position is measured and compared to the target trim position. The controller sends a control signal to a trim actuator to trim the drive unit toward the target trim position if the actual trim position is not equal to the target trim position and if at least one of the following is true: a defined dwell time has elapsed since a previous control signal was sent to the trim actuator to trim the drive unit; a given number of previous control signals has not been exceeded in an attempt to achieve the target trim position; and a difference between the target trim position and the actual trim position is outside of a given deadband.

대표청구항 ▼

1. A method for controlling a trim position of a trimmable drive unit powered by an engine with respect to a marine vessel, the method comprising: with a controller, determining a target trim position of the drive unit as a function of at least one of a speed of the vessel and a speed of the engine;measuring an actual trim position of the drive unit;comparing the actual trim position to the target trim position with the controller; andsending a first control signal to a trim actuator to trim the drive unit in a first direction toward the target trim position in response to a determination by the controller that the actual trim position is not equal to the target trim position and that at least two of the following are true: a defined dwell time has elapsed since a previous control signal was sent to the trim actuator to trim the drive unit;a given number of previous control signals has not been exceeded in an attempt to achieve the target trim position; anda difference between the target trim position and the actual trim position is outside of a given deadband. 2. The method of claim 1, further comprising sending a second control signal for a defined brake time to trim the drive unit in an opposite, second direction in response to a determination that the actual trim position has one of achieved and exceeded the target trim position. 3. The method of claim 2, wherein the brake time is on the order of tens of milliseconds. 4. The method of claim 3, further comprising determining the brake time as a function of one or more of: how long it takes for the second control signal to result in movement of the trim actuator, the vessel speed, the target trim position, the actual trim position, and a type of the drive unit. 5. The method of claim 1, further comprising: learning a maximum achievable trim position of the drive unit over time; anddiscontinuing sending the first control signal to the trim actuator in response to a determination that both of the following are true: the target trim position is greater than the maximum achievable trim position; andthe actual trim position is within the deadband of the maximum achievable trim position. 6. The method of claim 5, wherein the maximum achievable trim position is proximate a demarcation between a trim range and a tilt range of the drive unit. 7. The method of claim 6, further comprising learning the maximum achievable trim position only when the target trim position is greater than a given trim position and a rate of change of the actual trim position has been less than a given rate of change for a given period of time. 8. The method of claim 7, wherein the given trim position is within 10 percent of the demarcation between the trim range and the tilt range. 9. The method of claim 1, wherein the deadband is a smallest discrete increment of change in trim position that the drive unit is capable of achieving. 10. The method of claim 1, wherein the trim actuator comprises a hydraulic piston-cylinder in fluid communication with a hydraulic pump-motor combination. 11. A system for controlling a trim position of a trimmable drive unit powered by an engine with respect to a marine vessel, the system comprising: a trim actuator positioning the drive unit with respect to the marine vessel;a trim sensor that determines an actual trim position of the drive unit; anda controller that determines a target trim position of the drive unit as a function of at least one of a speed of the marine vessel and a speed of the engine, the controller being in signal communication with the trim actuator and the trim sensor;wherein the controller compares the actual trim position to the target trim position; andwherein the controller sends a first control signal to the trim actuator to trim the drive unit in a first direction toward the target trim position and to the target trim position or to a maximum achievable trim position of the drive unit in response to a determination that the actual trim position is not equal to the target trim position and that at least one of the following is true: a defined dwell time has elapsed since a previous control signal was sent to the trim actuator to trim the drive unit;a given number of previous control signals has not been exceeded in an attempt to achieve the target trim position; anda difference between the target trim position and the actual trim position is outside of a given deadband. 12. The system of claim 11, wherein the controller further sends a second control signal for a defined brake time to trim the drive unit in an opposite, second direction in response to a determination that the actual trim position has one of achieved and exceeded the target trim position. 13. The system of claim 12, wherein the brake time is on the order of tens of milliseconds. 14. The system of claim 13, wherein the controller determines the brake time as a function of one or more of: how long it takes for the second control signal to result in movement of the trim actuator, the vessel speed, the target trim position, the actual trim position, and a type of the drive unit. 15. The system of claim 11, wherein the controller further: learns the maximum achievable trim position of the drive unit over time; anddiscontinues sending the first control signal to the trim actuator in response to a determination that both of the following are true: the target trim position is greater than the maximum achievable trim position; andthe actual trim position is within the deadband of the maximum achievable trim position. 16. The system of claim 11, wherein the deadband is a smallest discrete increment of change in trim position that the drive unit is capable of achieving. 17. The system of claim 11, wherein the trim actuator comprises a hydraulic piston-cylinder in fluid communication with a hydraulic pump-motor combination. 18. The system of claim 11, wherein the trim actuator comprises an electric linear actuator. 19. A method for controlling a trim position of a trimmable drive unit powered by an engine with respect to a marine vessel, the method comprising: with a controller, determining a target trim position of the drive unit as a function of one of a speed of the vessel and a speed of the engine;measuring an actual trim position of the drive unit;comparing the actual trim position to the target trim position with the controller;sending a first control signal to a trim actuator to trim the drive unit in a first direction toward the target trim position in response to a determination by the controller that the actual trim position is not equal to the target trim position; andsending a second control signal for a defined brake time to trim the drive unit in an opposite, second direction in response to a determination that the actual trim position has one of achieved and exceeded the target trim position;wherein the brake time is on the order of tens of milliseconds. 20. The method of claim 19, further comprising: learning a maximum achievable trim position of the drive unit over time; anddiscontinuing sending the first control signal to the trim actuator in response to a determination that both of the following are true: the target trim position is greater than the maximum achievable trim position; andthe actual trim position is within a given deadband of the maximum achievable trim position.

이 특허에 인용된 특허 (96)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Systems and methods for automatically controlling attitude of a marine vessel with trim devices 원문보기

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Systems and methods for automatically controlling attitude of a marine vessel with trim devices 원문보기

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