Brake control system and brake control method for determining a braking correction value for emergency braking operations
一种控制系统、紧急制动的技术，应用在制动器、自动启动装置等方向，能够解决高道路摩擦系数、忽略、低车辆载荷等问题
Active Publication Date: 2019-06-11
LUCAS AUTOMOTIVE GMBH
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However, since the determination of such emergency braking characteristics usually takes place on test vehicles under (ideal) laboratory conditions, where the brakes and tires are new and assuming a high road friction coefficient and low vehicle load, the Time-dominating driving conditions such as road composition, weather conditions, wear of any vehicle components, situation-related vehicle weight, and other factors are unknown and therefore ignored
Although the triggering time for an emergency braking operation with a predetermined emergency braking characteristic is theoretically optimally selected, this can lead to a collision with an obstacle in front of the vehicle that can no longer be avoided, because after the emergency braking operation The speed reduction required for this is no longer achieved during
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[0036] In the context of the following disclosure, certain aspects are described primarily with reference to a brake control system. However, all these described aspects also apply in the context of the disclosed brake control method which can be executed, for example, by a central control unit of a motor vehicle. This may be done by appropriate write and read access to internal and / or external memory associated with the motor vehicle. The brake control method may be implemented within the motor vehicle as hardware and software or a combination of hardware and software. These hardware and software also include: digital signal processors, application specific integrated circuits, field programmable gate arrays and other suitable switching and arithmetic components.
[0037] first to figure 1 for reference. A typical traffic situation is shown schematically in which a host motor vehicle 10 (also referred to as vehicle 10 in the following) is driving behind another motor vehi...
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The present invention provides a brake control system and brake control method for determining a braking correction value for emergency braking operations. The invention discloses a brake control system adapted for use in a motor vehicle, which brake control system is intended to determine, while an ACC device of the motor vehicle is active and based on environmental data obtained from one or moreenvironmental sensors associated with the motor vehicle, a braking correction value for an emergency braking profile describing the braking behaviour of the motor vehicle. The environmental sensors are adapted to provide the brake control system with the environmental data representing the area in front of the motor vehicle. The brake control system is adapted to provide a target braking profileand to determine an actual braking profile on the basis of environmental data provided during an ACC braking operation. The brake control system is further adapted to compare the target braking profile with the actual braking profile and on the basis of the comparison result to determine the braking correction value.
Description
technical field [0001] A brake control system and brake control method for determining a brake correction value for a subsequent emergency braking operation are disclosed. The control system and method are made possible in particular by the presence of ACC (Autonomous / Adaptive Cruise Control) in motor vehicles. Background technique [0002] In modern motor vehicles, various driver assistance systems are used. Thus, for example, emergency brake assist is regularly provided in order to automatically initiate an emergency braking operation in dangerous situations such as an imminent collision with an obstacle located in front of the motor vehicle. The collision should thus be completely avoided, but alternatively at least the speed of the collision of the motor vehicle with the obstacle should be reduced as much as possible. The emergency braking operation triggered by the emergency brake assist generally follows a predetermined emergency braking profile with respect to trigg...
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IPC IPC(8): B60T7/12
CPCB60T7/22B60T2201/022B60T8/17
Inventor M·施罗德
Owner LUCAS AUTOMOTIVE GMBH