METHOD FOR DETERMINING DYNAMIC TRANSMISSION ERROR OF GEAR

    公开(公告)号:US20170138819A1

    公开(公告)日:2017-05-18

    申请号:US15319228

    申请日:2016-01-04

    发明人: Fuhao LIU

    IPC分类号: G01M13/02

    CPC分类号: G01M13/02 G01M13/021

    摘要: A gear dynamic transmission error determination method includes calculating a collision time interval via parameter values such as the angular velocity of an input shaft measured by an angle coder, a drag torque of an output shaft provided by a magnetic powder brake, a gear backlash, and angular displacements of the input shaft and the output shaft; and comparing a relative displacement contained with the gear backlash, until a value of the relative displacement falls within an appropriate interval and meets requirements, the result obtained being namely a transmission error with relatively high accuracy.

    VEHICLE REAR WHEEL STEERING ASSIST CONTROL SYSTEM AND CONTROL METHOD THEREFOR

    公开(公告)号:US20170144653A1

    公开(公告)日:2017-05-25

    申请号:US15319246

    申请日:2016-01-12

    发明人: Fuhao LIU

    摘要: A vehicle rear wheel steering assist control system is provided where a wheel deflection angle measuring instrument is mounted at a front wheel for measuring a steering angle of the front wheel, a rotational velocity measuring instrument is also mounted at the front wheel for testing a velocity of the front wheel, output ends of the wheel deflection angle measuring instrument and the rotational velocity measuring instrument are electrically connected to the data acquisition module, the data acquisition module is electrically connected to the controller, the controller is electrically connected to a data execution module, the rear wheel active steering device is mounted at a rear wheel of the automobile, the rear wheel active steering device is electrically connected to the data execution module, the controller is electrically connected to an ECU of the automobile, each automobile seat is provided with a weight sensor, which are electrically connected to the controller.