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    • 7. 发明授权
    • System and method for monitoring the stability of a hybrid powertrain
    • 用于监测混合动力总成稳定性的系统和方法
    • US08326482B2
    • 2012-12-04
    • US12604725
    • 2009-10-23
    • Houchun Xia
    • Houchun Xia
    • G01M17/00G06F19/00G06F7/00
    • B60W20/30B60K6/445B60L2240/421B60L2240/486B60W10/08B60W20/00B60W30/20B60W50/04B60W2510/081B60W2510/104F16H2037/102F16H2037/106F16H2057/0012F16H2061/0078F16H2061/6603Y02T10/6239Y02T10/642
    • A system and method for monitoring the stability of a hybrid powertrain system includes monitoring the system and its subsystems output response signals to its inputs to identify the system operating status. For example, for a hybrid powertrain system equipped with an electrically variable transmission (EVT), three signals are monitored. They are the two electrical motor speeds representing the direct subsystem response to their feedback control inputs and the EVT output speed representing the entire system's response. A stability monitoring system includes a mean determination module that determines a mean signal of the signals and an oscillation determination module that determines a signal oscillation signal based on the instant signal and the mean signal. The monitoring system also includes a signal mean crossing determination module that determines the signal crossing its mean signal and the oscillation peak detection, storage and comparison modules that determines system instability indicators for the control system to take corrective actions.
    • 用于监测混合动力系统的稳定性的系统和方法包括监视系统及其子系统向其输入端输出响应信号以识别系统运行状态。 例如,对于配备有电动变速器(EVT)的混合动力系统系统,监视三个信号。 它们是表示对其反馈控制输入的直接子系统响应的两个电动机速度,以及表示整个系统响应的EVT输出速度。 稳定性监视系统包括确定信号的平均信号的平均确定模块和基于即时信号和平均信号确定信号振荡信号的振荡确定模块。 监控系统还包括一个信号平均交叉判定模块,用于确定与其平均信号相交的信号,以及确定控制系统采取纠正措施的系统不稳定性指标的振荡峰值检测,存储和比较模块。