Station keeping methods
    2.
    发明授权

    公开(公告)号:US11327494B1

    公开(公告)日:2022-05-10

    申请号:US16788984

    申请日:2020-02-12

    摘要: A method for maintaining a marine vessel propelled by a marine propulsion device in a selected position includes determining a current global position of the marine vessel and receiving a signal command to maintain the current global position. The current global position is stored as a target global position in response to receiving the signal command. A subsequent global position of the marine vessel is determined and a position error difference between the subsequent global position and the target global position is determined. The method includes determining marine vessel movements required to minimize the position error difference, and causing the marine propulsion device to produce a thrust having a magnitude, a direction, and an angle calculated to result in achievement of the required marine vessel movements. At least one of timing and frequency of discontinuity of thrust production is controlled while the position error difference is minimized.

    Station keeping methods
    3.
    发明授权

    公开(公告)号:US11247753B2

    公开(公告)日:2022-02-15

    申请号:US16855604

    申请日:2020-04-22

    摘要: A method for maintaining a marine vessel at a global position and/or heading includes receiving measurements related to vessel attitude and estimating water roughness conditions based on the measurements. A difference between the vessel's actual global position and the target global position and/or a difference between the vessel's actual heading and the target heading are determined. The method includes calculating a desired linear velocity based on the position difference and/or a desired rotational velocity based on the heading difference. The vessel's actual linear velocity and/or actual rotational velocity are filtered based on the roughness conditions. The method includes determining a difference between the desired linear velocity and the filtered actual linear velocity and/or a difference between the desired rotational velocity and the filtered actual rotational velocity. The method also includes calculating vessel movements that will minimize the linear velocity difference and/or rotational velocity difference and carrying out the calculated movements.

    System and methods for steering a marine vessel

    公开(公告)号:US10232925B1

    公开(公告)日:2019-03-19

    申请号:US15377510

    申请日:2016-12-13

    IPC分类号: B63H25/24 B63H21/21 B63H25/02

    摘要: A method for steering a marine vessel powered by a marine engine and having a steerable marine device includes initiating a docking mode, and in response to initiation of the docking mode, reducing a steering ratio between input signals corresponding to steered positions of a steering wheel and output signals corresponding to desired steering angles of the marine device, such that the steering ratio is less than the steering ratio would otherwise be were the vessel in a non-docking mode. Input signals are accepted from the steering wheel, and output signals are generated based on the input signals and the reduced steering ratio. The output signals are sent to a steering actuator coupled to the marine device, which controls a position of the marine device to the desired steering angles.

    SYSTEMS AND METHODS FOR AUTOMATICALLY CONTROLLING ATTITUDE OF A MARINE VESSEL WITH TRIM DEVICES

    公开(公告)号:US20190023368A1

    公开(公告)日:2019-01-24

    申请号:US16144352

    申请日:2018-09-27

    IPC分类号: B63H20/10 G05D1/02 G05D1/08

    摘要: A trim control system includes a memory storing a plurality of trim profiles, each trim profile defining a unique relationship between a plurality of vessel speeds and respective propulsion device trim angles. The unique relationship is: (a) a calibrated relationship developed by determining optimal trim angles for a particular propulsion device powering a particular marine vessel at a number of tested vessel speeds and a number of different conditions; or (b) developed by modifying a nominal relationship between a number of vessel speeds and a number of corresponding trim angles. An input device allows a user to select one of the trim profiles from the memory so as to specify an aggressiveness of trim angle relative to vessel speed. A controller determines a setpoint trim angle corresponding to measured vessel speed according to the selected trim profile. The control system positions the propulsion device at the setpoint trim angle.

    Station keeping methods
    6.
    发明授权

    公开(公告)号:US10095232B1

    公开(公告)日:2018-10-09

    申请号:US15445031

    申请日:2017-02-28

    摘要: A method for maintaining position and/or heading of a marine vessel in a body of water includes accepting a command to maintain the vessel at an initial selected position and/or heading, and utilizing position/heading feedback control to determine initial steering angles, gear positions, and engine speeds for the vessel's propulsion devices that cause the propulsion devices to produce thrust that counteracts a net external force and moment on the vessel and maintains the vessel at the initial selected position/heading. The method also includes propelling the vessel to a new selected position/heading, and accepting a command to maintain the vessel at the new selected position/heading. The method next includes utilizing information related to one of the position/heading feedback control and the propulsion devices' thrust to predict control parameters required to maintain the vessel at the new selected position/heading, and controlling the propulsion device according to the predicted control parameters.

    Methods for positioning multiple trimmable marine propulsion devices on a marine vessel

    公开(公告)号:US09764810B1

    公开(公告)日:2017-09-19

    申请号:US15147264

    申请日:2016-05-05

    IPC分类号: B63H20/10 B63H25/02 B63H20/00

    摘要: A method for positioning two or more trimmable marine propulsion devices coupled to a transom of a marine vessel includes identifying two propulsion devices located one on each of a port side and a starboard side of a centerline of the transom and spaced symmetrically with respect to the centerline. The two propulsion devices are defined as a first set and are associated with a first target trim position. The method also includes defining a second set of propulsion devices and associating the second set with a second target trim position. When in auto-trim mode, each propulsion device in a set of propulsion devices is actuated to its target trim position only if the actual trim positions of all propulsion devices in the set differ from the target trim position by at least a given amount. The propulsion devices may be actuated individually in response to a user sync command.

    System and method for trimming trimmable marine devices with respect to a marine vessel

    公开(公告)号:US09694892B1

    公开(公告)日:2017-07-04

    申请号:US15003335

    申请日:2016-01-21

    IPC分类号: B63H21/22 B63H20/10

    CPC分类号: B63H20/10

    摘要: A method for controlling a trim system on a marine vessel includes receiving an actual trim position of a trimmable marine device at a controller and determining a magnitude of a trim position error by comparing the actual trim position to a target trim position with the controller. The method also includes determining a magnitude of an acceleration rate of the marine vessel. The controller determines the activation time of a trim actuator coupled to and rotating the marine device with respect to the marine vessel based on the magnitude of the trim position error and the magnitude of the acceleration rate. The controller then sends a control signal to activate the trim actuator to rotate the marine device toward the target trim position. The method includes discontinuing the control signal once the activation time expires to deactivate the trim actuator. A corresponding system is also disclosed.

    Marine propulsion control system and method

    公开(公告)号:US11091243B1

    公开(公告)日:2021-08-17

    申请号:US16887123

    申请日:2020-05-29

    摘要: A propulsion system on a marine vessel includes at least one steerable propulsion device and at least one lateral thruster. A steering wheel is mechanically connected to and operable by a user to steer the at least one propulsion device. A user interface device is operable by a user to provide at least a lateral thrust command to command lateral movement and a rotational thrust command to command rotational movement of the vessel. A controller is configured to determine a difference between a steering position of the propulsion device and a centered steering position. A user interface display is controllable to indicate at least one of the steering position of the propulsion device and the difference between the steering position and the centered steering position. The controller is further configured to determine that the steering position is within a threshold range of the centered steering position.