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    • 2. 发明授权
    • Suspension control system
    • 悬架控制系统
    • US06434460B1
    • 2002-08-13
    • US09911617
    • 2001-07-25
    • Toru UchinoNobuyuki IchimaruMasaaki UchiyamaTakahide Kobayashi
    • Toru UchinoNobuyuki IchimaruMasaaki UchiyamaTakahide Kobayashi
    • B60G17015
    • B60G17/01933B60G2202/40B60G2400/10B60G2400/40B60G2400/61B60G2500/10Y10S180/902
    • By passing the vertical acceleration through a phase adjusting filter and a gain adjusting filter, the phase of the vertical acceleration is advanced by 49 degrees so that the phase difference with respect to the actual relative velocity becomes 180 degrees in the neighborhood of the vehicle body resonance point, thereby making the phase of the vertical acceleration, in effect, coincident with the phase of the relative velocity. In the neighborhood of the vehicle body resonance point (1 Hz), the gain of the estimated relative velocity takes a small value. In frequency regions other than the neighborhood of the vehicle body resonance point, the gain of the estimated relative velocity is increased. Consequently, the controlled variable in the neighborhood of the vehicle body resonance point increases, and the controlled variable in higher frequency regions decreases. Damping force is adjusted in correspondence to the controlled variable. Thus, it is possible to improve ride quality in the neighborhood of the vehicle body resonance point (1 Hz).
    • 通过使垂直加速度通过相位调整滤波器和增益调整滤波器,垂直加速度的相位提前49度,使得相对于实际相对速度的相位差在车身谐振附近变为180度 点,从而使垂直加速度的相位实际上与相对速度的相位一致。 在车体共振点(1Hz)附近,估计的相对速度的增益取小值。 在车体共振点附近的频率区域中,估计的相对速度的增益增加。 因此,车体共振点附近的受控变量增大,高频区域的受控变量减小。 阻尼力相应于受控变量进行调整。 因此,能够提高车体共振点附近的乘坐质量(1Hz)。
    • 4. 发明授权
    • Suspension control system
    • 悬架控制系统
    • US06701235B2
    • 2004-03-02
    • US09941844
    • 2001-08-30
    • Masaaki UchiyamaToru UchinoNobuyuki Ichimaru
    • Masaaki UchiyamaToru UchinoNobuyuki Ichimaru
    • B60G17015
    • B60G17/01908B60G17/015B60G17/0165B60G17/06B60G2400/102B60G2400/821B60G2500/10Y10S180/902
    • In a suspension control system, a controller previously stores damping force maps (an ordinary road map, a rough road map, and an extremely rough road map) corresponding to road surface conditions (an ordinary road, a rough road, and an extremely rough road) defined by frequency and amplitude of vertical acceleration. The frequency and amplitude of the vertical acceleration are detected, and a damping force map (the ordinary road map, the rough road map, or the extremely rough road map) corresponding to the detected information is selected. Damping force control is effected on the basis of the selected damping force map. Selection of a damping force map according to the frequency and amplitude of the vertical acceleration is also made when a change in the vertical acceleration, i.e. a change in piston speed, is predicted during running on an ordinary road, a rough road or an extremely rough road.
    • 在悬架控制系统中,控制器预先存储对应于路面条件(普通道路,粗路和非常粗糙的道路)的阻尼力图(普通路线图,粗糙路线图和极其粗糙的路线图) )由垂直加速度的频率和幅度定义。 检测垂直加速度的频率和幅度,并且选择与检测到的信息相对应的阻尼力图(普通路线图,粗糙路线图或极其粗略的路线图)。 基于选择的阻尼力图来实现阻尼力控制。 当在普通道路,粗糙路面或非常粗糙的行驶中预测垂直加速度的变化(即,活塞速度的变化)时,根据垂直加速度的频率和振幅来选择阻尼力图 路。