公开(公告)号：US20080231108A1

公开(公告)日：2008-09-25

申请号：US12064969

申请日：2006-08-28

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

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

IPC分类号： B60T13/74 ,  G01L5/28

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

摘要： A method of determining an initial pressure which prevails between a master brake cylinder and an inlet valve of a wheel brake cylinder of a motor vehicle brake system. It determines the initial pressure taking into consideration the variation of a follow-up voltage of a clock-operated 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 in each case taken into account to determine an initial pressure value, and the quality and/or reliability of the measured characteristic quantities is evaluated. The characteristic quantities and/or the initial pressure values determined therefrom are filtered and/or conditioned in the event of lack in quality and/or reliability of the measured characteristic quanitites. The initial pressure values determined from the various characteristic quantities are averaged, with only pressure values of similar size being taken into consideration and the initial pressure values are temporally averaged in order to dampen fluctuations.

摘要翻译： 一种确定主制动缸和机动车辆制动系统的车轮制动缸的入口阀之间的初始压力的方法。 考虑到泵的时钟驱动电动机的后续电压的变化来确定初始压力，其用于将制动液从低压蓄能器返回到主制动缸中。 测量电压变化的几个特征量，并且在每种情况下考虑以确定初始压力值，并且评估测量的特征量的质量和/或可靠性。 在测量的特征量具有质量和/或可靠性的情况下，由其确定的特征量和/或初始压力值被过滤和/或调节。 从各种特征量确定的初始压力值被平均，仅考虑类似尺寸的压力值，并且初始压力值在时间上被平均以便抑制波动。