利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

6 条记录 (耗时 0.027 秒)

    Closed-loop control of an infinitely variable transmission
    2.
    发明授权
    Closed-loop control of an infinitely variable transmission 有权

    公开(公告)号：US11268615B2

    公开(公告)日：2022-03-08

    申请号：US17232225

    申请日：2021-04-16

    申请人： UNIVERSITY OF MARYLAND, BALTIMORE COUNTY

    发明人： Weidong Zhu ,  Xuefeng Wang ,  Gang Li

    IPC分类号： F16H59/70 ,  F16H61/664 ,  F16H59/40 ,  F16H59/42 ,  F16H3/76 ,  F16H61/00

    摘要： A nonlinear closed-loop control combined with an integral time-delay feedback control is disclosed to adjust a speed ratio of an infinitely variable transmission (IVT) system. A speed ratio control for an IVT system involves a forward speed controller and a crank length controller for different speed ranges. The time-delay control is designed to reduce speed fluctuations of the output speed of an IVT with an accurate speed ratio. The speed ratio of an IVT with the disclosed control strategy can achieve an excellent tracking response for the desired constant output speed and reduce speed fluctuations of the output speed of an IVT by the time-delay feedback control.

    Geared infinitely variable transmission
    3.
    发明授权
    Geared infinitely variable transmission 有权
    齿轮无级变速器

    公开(公告)号：US09222558B2

    公开(公告)日：2015-12-29

    申请号：US14071989

    申请日：2013-11-05

    申请人： University of Maryland, Baltimore County

    发明人： Weidong Zhu ,  Xuefeng Wang

    IPC分类号： F16H29/00 ,  F16H29/20 ,  F16H29/04 ,  F16H21/14 ,  F16H21/20 ,  F16H19/04

    CPC分类号： F16H29/20 ,  F16H19/043 ,  F16H21/14 ,  F16H21/20 ,  F16H29/04 ,  Y10T74/18408

    摘要： A geared infinitely variable transmission (GIVT) to provide a continuous output-to-input speed ratio from zero to a certain value is designed, and its working principle is illustrated. Crank-slider systems are used in the GIVT; the output-to-input speed ratio is changed with the crank length. Racks and pinions, controlled by planetary gear sets, are used to change the crank length when the cranks are rotating. One-way bearings rectify the output speeds from different crank-slider systems to obtain the output speed of the GIVT. Noncircular gears are used to minimize variations since the crank-slider systems can introduce variations of the instantaneous speed ratio. A direction control system is provided using planetary gear sets.

    摘要翻译： 设计了一种从零到一定值提供连续输出到输入速度比的齿轮无级变速器（GIVT），并说明了其工作原理。 GIVT中使用曲柄滑块系统; 输出转速比随曲柄长度变化。 由行星齿轮组控制的齿条和小齿轮用于在曲柄旋转时改变曲柄长度。 单向轴承整流不同曲柄滑块系统的输出速度，以获得GIVT的输出速度。 使用非圆形齿轮来最小化变化，因为曲柄滑块系统可以引入瞬时速度比的变化。 使用行星齿轮组提供方向控制系统。

    GEARED INFINITELY VARIABLE TRANSMISSION
    4.
    发明申请
    GEARED INFINITELY VARIABLE TRANSMISSION 有权
    齿轮无级变速箱

    公开(公告)号：US20140123787A1

    公开(公告)日：2014-05-08

    申请号：US14071989

    申请日：2013-11-05

    申请人： University of Maryland, Baltimore County

    发明人： Weidong ZHU ,  Xuefeng Wang

    IPC分类号： F16H21/14

    CPC分类号： F16H29/20 ,  F16H19/043 ,  F16H21/14 ,  F16H21/20 ,  F16H29/04 ,  Y10T74/18408

    摘要： An infinitely variable transmission (IVT) to provide a continuous output-to-input speed ratio from zero to a certain value is designed, and its working principle is illustrated. It is a geared IVT (GIVT), since its function to achieve the continuously varied speed ratio is implemented by gears. Crank-slider systems are used in the GIVT; the output-to-input speed ratio is changed with the crank length. Racks and pinions, whose motion is controlled by planetary gear sets, are used to change the crank length when the cranks are rotating. One-way bearings are used to rectify the output speeds from different crank-slider systems to obtain the output speed of the GIVT. Since the crank-slider systems can introduce variations of the instantaneous speed ratio, a pair of noncircular gears is designed to minimize the variations. A direction control system is also designed for the GIVT using planetary gear sets. Finally, a vehicle start-up simulation and a wind turbine simulation to maintain a constant generator speed are developed based on a GIVT module in the Matlab Simulink environment.

    摘要翻译： 设计了一种无级变速器（IVT），从零到一定值提供连续的输出与输入速度比，并说明其工作原理。 它是一款齿轮传动系统（GIVT），由于实现变速比不断变化的功能是通过齿轮实现的。 GIVT中使用曲柄滑块系统; 输出转速比随曲柄长度变化。 齿轮和小齿轮，其运动由行星齿轮组控制，用于在曲柄旋转时改变曲柄长度。 单向轴承用于纠正不同曲柄滑块系统的输出速度，以获得GIVT的输出速度。 由于曲柄滑块系统可引入瞬时速比的变化，因此设计了一对非圆形齿轮以使变化最小化。 还使用行星齿轮组为GIVT设计了方向控制系统。 最后，基于Matlab Simulink环境中的GIVT模块开发车辆启动仿真和风力涡轮机模拟以保持恒定的发电机转速。