Automatic compass calibration systems and methods

    公开(公告)号:US10215564B2

    公开(公告)日:2019-02-26

    申请号:US14941497

    申请日:2015-11-13

    Abstract: Techniques are disclosed for systems and methods to provide automatic and substantially continuous calibration for compasses mounted to moving structures. A compass calibration system may include a logic device configured to receive one or more sensor signals and determine a corrected magnetic field based, at least in part, on a measured local magnetic field. The logic device may be adapted to receive an angular velocity, an acceleration, the measured local magnetic field, and/or a speed of a mobile structure; generate stabilized roll and pitch components of an orientation of the mobile structure based, at least in part, on the acceleration and angular velocity; and determine the corrected magnetic field based, at least in part, on the speed, the local magnetic field, the stabilized roll and pitch components, and/or the angular velocity.

    Acceleration corrected attitude estimation systems and methods

    公开(公告)号:US10337883B2

    公开(公告)日:2019-07-02

    申请号:US15239760

    申请日:2016-08-17

    Abstract: Techniques are disclosed for systems and methods to provide accurate attitude estimation for a mobile structure. An attitude estimation system includes a logic device in communication with a gyroscope, an accelerometer, and/or a speed sensor. Sensor signals provided by the various sensors are used to determine an estimated absolute coordinate frame relative to the mobile structure, which can be referenced to the Earth's gravity. Angular velocities provided by the gyroscope are transformed to the estimated absolute coordinate frame and used to determine a stabilized attitude estimate for the mobile structure. The stabilized attitude estimate may be displayed to a user, used to calculate a heading or route for the mobile structure, and/or used to adjust a steering actuator, a propulsion system thrust, and/or other operational systems of the mobile structure.

    STABILIZED DIRECTIONAL CONTROL SYSTEMS AND METHODS
    3.
    发明申请
    STABILIZED DIRECTIONAL CONTROL SYSTEMS AND METHODS 有权
    稳定的方向控制系统和方法

    公开(公告)号:US20140316657A1

    公开(公告)日:2014-10-23

    申请号:US14321646

    申请日:2014-07-01

    CPC classification number: B63H25/06 B63H25/00 G05D1/0206

    Abstract: Techniques are disclosed for systems and methods to provide stabilized directional control for a vehicle. A directional control system for an embodiment may include a logic device adapted to receive directional data about a vehicle and determine nominal vehicle feedback from the directional data. The nominal vehicle feedback may be used to adjust a directional control signal provided to an actuator of a vehicle. The directional control signal may be limited to a value below an actuator rate limit before a directional control signal is adjusted by the nominal vehicle feedback. A directional control system may include a logic device, a memory, one or more sensors, one or more actuators/controllers, and modules to interface with users, sensors, actuators, and/or other modules of a vehicle.

    Abstract translation: 公开了用于为车辆提供稳定的方向控制的系统和方法的技术。 用于实施例的方向控制系统可以包括适于接收关于车辆的方向数据并且从方向数据确定标称车辆反馈的逻辑设备。 可以使用公称车辆反馈来调整提供给车辆的致动器的方向控制信号。 方向控制信号可以在方向控制信号被标称车辆反馈调节之前被限制在低于致动器速率极限的值。 方向控制系统可以包括逻辑设备,存储器,一个或多个传感器,一个或多个致动器/控制器和与车辆的用户,传感器,致动器和/或其他模块接口的模块。

    Stabilized directional control systems and methods

    公开(公告)号:US09676464B2

    公开(公告)日:2017-06-13

    申请号:US14321646

    申请日:2014-07-01

    CPC classification number: B63H25/06 B63H25/00 G05D1/0206

    Abstract: Techniques are disclosed for systems and methods to provide stabilized directional control for a vehicle. A directional control system for an embodiment may include a logic device adapted to receive directional data about a vehicle and determine nominal vehicle feedback from the directional data. The nominal vehicle feedback may be used to adjust a directional control signal provided to an actuator of a vehicle. The directional control signal may be limited to a value below an actuator rate limit before a directional control signal is adjusted by the nominal vehicle feedback. A directional control system may include a logic device, a memory, one or more sensors, one or more actuators/controllers, and modules to interface with users, sensors, actuators, and/or other modules of a vehicle.

    Hydraulic slip compensation systems and methods

    公开(公告)号:US10338593B2

    公开(公告)日:2019-07-02

    申请号:US15222905

    申请日:2016-07-28

    Abstract: Techniques are disclosed for systems and methods to provide accurate positioning for a hydraulic steering system without a need for a steering reference transducer. A hydraulic steering system may include a logic device in communication with an autopilot pump controller. Control and sensor signals provided by the pump controller are used to determine a linear or uncompensated steering actuator speed and an estimate of the hydraulic elasticity of the steering system, which can be modeled as an estimate of the air volume trapped within the steering system. The hydraulic elasticity/air volume estimate is used to determine a corrected or compensated steering actuator speed, and the corrected steering actuator speed is used to accurately control the steering system.

    HYDRAULIC SLIP COMPENSATION SYSTEMS AND METHODS
    6.
    发明申请
    HYDRAULIC SLIP COMPENSATION SYSTEMS AND METHODS 审中-公开
    液压滑移补偿系统及方法

    公开(公告)号:US20160334794A1

    公开(公告)日:2016-11-17

    申请号:US15222905

    申请日:2016-07-28

    CPC classification number: G05D1/0206 B63H25/08 B63H25/30

    Abstract: Techniques are disclosed for systems and methods to provide accurate positioning for a hydraulic steering system without a need for a steering reference transducer. A hydraulic steering system may include a logic device in communication with an autopilot pump controller. Control and sensor signals provided by the pump controller are used to determine a linear or uncompensated steering actuator speed and an estimate of the hydraulic elasticity of the steering system, which can be modeled as an estimate of the air volume trapped within the steering system. The hydraulic elasticity/air volume estimate is used to determine a corrected or compensated steering actuator speed, and the corrected steering actuator speed is used to accurately control the steering system.

    Abstract translation: 公开了用于为液压转向系统提供精确定位而不需要转向参考换能器的系统和方法的技术。 液压转向系统可以包括与自动驾驶仪泵控制器通信的逻辑设备。 由泵控制器提供的控制和传感器信号用于确定线性或无补偿的转向致动器速度和对转向系统的液压弹性的估计,其可被建模为被捕获在转向系统内的空气体积的估计值。 液压弹性/风量估计用于确定校正或补偿的转向执行器速度,并且使用校正的转向致动器速度来精确地控制转向系统。

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