公开(公告)号：US08205948B2

公开(公告)日：2012-06-26

申请号：US12064969

申请日：2006-08-28

申请人： Faouzi Attallah ,  Rudiger Majlo ,  Guntjof Magel ,  Lukas Kroh ,  Frank Sikorski ,  Andreas Kohl ,  Jochen Muller

发明人： Faouzi Attallah ,  Rudiger Majlo ,  Guntjof Magel ,  Lukas Kroh ,  Frank Sikorski ,  Andreas Kohl ,  Jochen Muller

IPC分类号： B60T13/18

CPC分类号： B60T8/3655 ,  B60T8/4059 ,  B60T8/4275

摘要： A method of determining an initial pressure prevailing between a master brake cylinder and an inlet valve of a wheel brake cylinder of a motor vehicle determines the initial pressure taking into consideration the variation of a voltage of a PWMoperated motor of a pump, which is used for the return delivery of brake fluid from a low-pressure accumulator into the master brake cylinder. Several characteristic quantities of the voltage variation are measured and converted to respective initial pressure values. The characteristic quantities or the initial pressure values determined therefrom are filtered or conditioned in the event of lack in quality or reliability of the measured characteristic quantities. The respective initial pressure values of similar size are averaged, and the averaged initial pressure values are temporally averaged in order to dampen fluctuations.

摘要翻译： 确定机动车辆的车轮制动缸的主制动缸和进气阀之间的初始压力的方法根据泵的PWM操作电动机的电压的变化来确定初始压力，该压力用于 制动液从低压蓄能器返回主制动缸。 电压变化的几个特征量被测量并转换成各自的初始压力值。 在测量的特征量的质量或可靠性不足的情况下，对由其确定的特征量或初始压力值进行过滤或调节。 将相似尺寸的相应初始压力值平均，并且平均的初始压力值在时间上被平均以便抑制波动。