METHOD FOR DETECTING MOTOR CONTROL LOSS IN A POWER STEERING SYSTEM
    1.
    发明申请
    METHOD FOR DETECTING MOTOR CONTROL LOSS IN A POWER STEERING SYSTEM 审中-公开
    在动力转向系统中检测电机控制损失的方法

    公开(公告)号:WO03012969A3

    公开(公告)日:2003-07-17

    申请号:PCT/US0224353

    申请日:2002-08-01

    Abstract: A method (100) for detecting a loss of motor control in an electric power steering system is disclosed. In an exemplary embodiment, the method (100) includes determining a duty cycle of a steering command signal (104) generated by a controller. The steering command signal (104) commands a steering mechanism to be turned in either a first or a second direction, the second direction being opposite to the first direction. A steering velocity (106) of the steering mechanism is determined, the steering velocity (106) being characterized by a steering velocity magnitude and a steering velocity direction whenever the steering velocity is greater than zero. The steering velocity direction corresponds to either the first or the second direction. The duty cycle is then compared to a first selected value (108), and the steering velocity magnitude is compared to a second selected value (112). If the duty cycle exceeds the first selected value (108), the steering velocity magnitude exceeds the second selected value (112), and the steering velocity direction is opposite to the direction commanded by the steering command signal (114), then a fault signal is generated (116).

    Abstract translation: 公开了一种用于检测电动助力转向系统中的电动机控制的损失的方法(100)。 在示例性实施例中,方法(100)包括确定由控制器生成的转向命令信号(104)的占空比。 转向命令信号(104)命令转向机构沿第一或第二方向转动,第二方向与第一方向相反。 确定转向机构的转向速度(106),每当转向速度大于零时,转向速度(106)由转向速度幅度和转向速度方向表征。 转向速度方向对应于第一或第二方向。 然后将占空比与第一选定值(108)进行比较,并且将转向速度大小与第二选定值(112)进行比较。 如果占空比超过第一选定值(108),则转向速度幅度超过第二选择值(112),并且转向速度方向与由转向命令信号(114)命令的方向相反,则故障信号 被生成(116)。

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