公开(公告)号：US20140095044A1

公开(公告)日：2014-04-03

申请号：US14037832

申请日：2013-09-26

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Masayuki KIKAWA ,  Daisuke GOTO ,  Kentaro UENO ,  Toshiyuki INNAMI ,  Tatsuji OHKUBO

IPC: B60T17/22

CPC classification number: B60T17/221 ,  B60T7/042 ,  B60T8/4077 ,  B60T13/146 ,  B60T13/662 ,  B60T13/686 ,  B60T13/745

Abstract: A second ECU determines whether or not there is an abnormality in a hydraulic-pressure sensor in a first cycle based on a detection value of the hydraulic-pressure sensor, and outputs a signal indicating determination of occurrence of the abnormality to a first ECU via signal line when determining occurrence of the abnormality in the sensor. The first ECU receives the detection value of the hydraulic-pressure sensor through communication from the second ECU via the signal line to determine whether or not there is the abnormality in the hydraulic-pressure sensor in a second cycle shorter than the first cycle. When determining that the hydraulic-pressure sensor is abnormal, the first ECU controls driving of an electric actuator based on a braking command from an operation-amount detection sensor without using the detection value of the hydraulic-pressure sensor determined as abnormal.

Abstract translation: 第二ECU基于液压传感器的检测值，判定第一循环中的液压传感器是否发生异常，并通过信号向第一ECU输出表示异常发生的判定的信号 确定传感器异常发生时的线路。 第一ECU经由信号线从第二ECU通过连接接收液压传感器的检测值，以确定液压传感器在比第一周期短的第二周期中是否存在异常。 当确定液压传感器异常时，第一ECU基于来自操作量检测传感器的制动命令来控制电致动器的驱动，而不使用被确定为异常的液压传感器的检测值。

公开(公告)号：US20160046274A1

公开(公告)日：2016-02-18

申请号：US14778735

申请日：2014-03-26

Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.

Inventor： Makoto MATSUURA ,  Daisuke GOTO ,  Tohma YAMAGUCHI ,  Tatsuji OHKUBO

IPC: B60T17/22 ,  B60T13/68 ,  B60T13/66

CPC classification number: B60T17/222 ,  B60T8/326 ,  B60T13/662 ,  B60T13/686 ,  B60T13/745 ,  B60T17/22

Abstract: An ECU (19) outputs control signals to an electric booster (16) of a fluid-pressure generating device (5) and to an ESC (22). In this way, the establishment and cutting off of communication through pressure-increase control valves (29), (29′), (31), and (31′) of the ESC (22) are controlled to connect each of wheel cylinders (1) to (4) in turn to the master cylinder (8). In doing so, the electric booster (16) is controlled for each of the wheel cylinders (1) to (4) to measure a stroke of a piston (10), (11) of a master cylinder (8), or a volume of brake fluid proportional to the stroke of the piston (1C), (11), and a fluid pressure detected by fluid-pressure sensors (20) and (21). The fluid volume-pressure characteristic of each of the wheel cylinders (1) to (4) so determined is used for comparison to detect any atmospheric air in each pipeline.

Abstract translation: ECU（19）将控制信号输出到流体压力生成装置（5）的电动助力器（16）和ESC（22）。 以这种方式，控制通过ESC（22）的增压控制阀（29），（29'），（31）和（31'）建立和切断通信，以连接每个轮缸（ 1）到（4）依次连接到主缸（8）。 在这样做时，为每个轮缸（1）至（4）控制电动助力器（16），以测量主缸（8）的活塞（10），（11）的行程，或者容积 与活塞（1C），（11）的行程成比例的制动液和由流体压力传感器（20）和（21）检测的流体压力。 将如此确定的每个轮缸（1）至（4）的流体体积压力特性用于比较以检测每个管道中的任何大气。