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    • 5. 发明申请
    • Vehicle speed ratio control
    • 车速比控制
    • US20050251315A1
    • 2005-11-10
    • US11107989
    • 2005-04-18
    • Hiroyasu TanakaTakeshi OohoriManabu Yamanaka
    • Hiroyasu TanakaTakeshi OohoriManabu Yamanaka
    • F16H59/38F16H61/02F16H61/12F16H61/66F16H61/662G06F7/00
    • F16H61/12F16H59/38F16H61/66259F16H2061/1208F16H2061/122F16H2061/1284
    • A controller (1) feedback controls a speed ratio of an automatic transmission (101) based on the rotation speed signal from a rotation speed sensor (26, 27) which detects the rotation speed of the automatic transmission (101). The controller (1) calculates a noise level in the rotation speed signal by adding integral processing and differential processing to the rotation speed signal (S1, S2). When the noise level is less than a first threshold value (Rsh1), the system is functioning normally, and when the noise level is equal to or greater than a second threshold value (Rsh2) larger than the first threshold value (Rsh1), the rotation speed sensor (26, 27) has a fault. When the noise level is between the first and second threshold values (Rsh1, Rsh2), the rotation speed sensor (26, 27) is under the influence of noise, and speed ratio control is stabilized by maintaining the speed ratio without variation.
    • 控制器(1)基于来自检测自动变速器(101)的转速的转速传感器(26,27)的转速信号,反馈控制自动变速器(101)的变速比。 控制器(1)通过向转速信号(S1,S2)添加积分处理和差分处理来计算转速信号中的噪声电平。 当噪声水平小于第一阈值(Rsh 1)时,系统正常工作,并且当噪声水平等于或大于大于第一阈值(Rsh 1)的第二阈值(Rsh 2) ),转速传感器(26,27)具有故障。 当噪声水平处于第一和第二阈值(Rsh 1,Rsh 2)之间时,转速传感器(26,27)受噪声的影响,并且通过保持速比而不变化来稳定速比控制。