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    • 2. 发明授权
    • Cruise control system for a vehicle
    • 车辆巡航控制系统
    • US4803637A
    • 1989-02-07
    • US70188
    • 1987-07-06
    • Tetsuya TadaMasumi NagasakaHiroaki TabuchiTatsuo Teratani
    • Tetsuya TadaMasumi NagasakaHiroaki TabuchiTatsuo Teratani
    • B60K31/10B60K31/00
    • B60K31/107
    • A cruise control system for a vehicle having an internal combustion engine is provided with a throttle valve operated by a diaphragm actuator irrespective of a depression of an accelerator pedal by an operator of the vehicle. The system is provided with a control circuit for controlling an electric signal applied to the actuator. A fixed level signal is first applied to the actuator for a short period after a cruise mode operation has commenced, so that the diaphragm is quickly moved to prevent a temporary decrease in the vehicle speed. After the elapse of the predetermined time, the level of the electric signal is controlled by feedback so that the vehicle speed is controlled to a target speed. A feedback gain initially has a first value for a period after the feedback control is commenced and then has a second value which is smaller than the first value. Furthermore, the feedback gain may have a third value at a transient state from a condition where the feedback gain has the first value and a condition where the feedback gain has the second value.
    • 具有内燃机的车辆的巡航控制系统设置有由隔膜致动器操作的节气门,而不管车辆的操作者是否加速踏板的下压。 该系统设置有用于控制施加到致动器的电信号的控制电路。 在巡航模式操作开始之后,固定电平信号首先施加到致动器短时间段,使得隔膜快速移动以防止车辆速度的暂时降低。 在经过预定时间之后,通过反馈来控制电信号的电平,使得车速被控制到目标速度。 反馈增益最初在反馈控制开始之后的一段时间内具有第一值,然后具有小于第一值的第二值。 此外,反馈增益可以在反馈增益具有第一值的条件和反馈增益具有第二值的条件下在瞬态状态下具有第三值。