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    • 84. 发明授权
    • Method and system using fuzzy logic for controlling a CVT transmission
    • 用于控制CVT传输的模糊逻辑的方法和系统
    • US5558596A
    • 1996-09-24
    • US328535
    • 1994-10-25
    • Masao AdachiMakoto ShioyaKazuhiko SatoMinoru Ohkubo
    • Masao AdachiMakoto ShioyaKazuhiko SatoMinoru Ohkubo
    • B60W10/04B60W10/08B60W10/10B60W10/101B60W50/00F02D29/00F02D45/00F16H9/00F16H59/24F16H59/36F16H59/40F16H59/42F16H59/48F16H61/00F16H61/02F16H61/18F16H61/662F16H63/40F16H63/50B60K41/12
    • F16H61/66259B60W2050/0057F16H2061/0081F16H59/24F16H59/36F16H59/40F16H59/42F16H59/48Y02T10/84Y10T477/6242Y10T477/62427
    • According to the present invention, the driver's operation quantity and the vehicle running status are measured, the target value of speed ratio or the target value of revolution speed on the input side of the transmission is determined on the basis of the above measured values, and the speed ratio is changed using different algorithms (particularly fuzzy rules) on the basis of the magnitude of deviation between the target value and the actual value.Furthermore, when a vehicle has a continuously variable transmission, a change of at least one of the vehicle acceleration and the shaft torque of a drive wheel is predicted, the engine output torque is controlled on the basis of the prediction, and finite speed ratio characteristics or intermediate characteristics between finite speed ratio characteristics and continuously variable speed ratio characteristics are controlled for the continuously variable transmission. By doing this, speed ratio control stressed on stability is available when the absolute value of the above deviation is small, while speed ratio control stressed on rapid response and smooth acceleration variation is available when the absolute value of the deviation is large.Furthermore, a smooth acceleration feeling and a rapid acceleration response can be realized, the maneuverability is improved, and the driver can find pleasure in more speed ratio characteristics.
    • 根据本发明,测量驾驶员的操作量和车辆行驶状态,基于上述测量值来确定变速器的输入侧的速度比的目标值或转速的目标值,以及 基于目标值和实际值之间的偏差的大小,使用不同的算法(特别是模糊规则)来改变速度比。 此外,当车辆具有无级变速器时,预测到驱动轮的车辆加速度和轴转矩中的至少一个的变化,基于预测来控制发动机输出转矩,并且有限速比特性 或有限速比特性和无级变速比特性之间的中间特性被控制为无级变速器。 通过这样做,当上述偏差的绝对值较小时,稳定性的变速比控制是可用的,而当偏差的绝对值大时,速度比控制受到快速响应和平滑加速度变化的影响。 此外,可以实现平滑的加速感和快速加速响应,提高机动性,并且驾驶员可以获得更多的速比特性的乐趣。