Study Of Hardware In Brake-by-Wire System

There are two types of BBW systems.These are Electrical Hydraulic Brake (EHB), and Electrical Mechanical Brake (EMB). An EHB system contains a hydraulic back-up for the brake system, and in the case of an electrical failure, this hydraulic system takes over and allows the user to have some limited control of the braking system. EMB has no hydraulic back-up system, and is realised totally by electric and electro-mechanical components. As EMB has no hydraulic backup components, safety and fault tolerance is of the utmost importance in an EMB system. With the development of the Brake by-wire system,EHB is the first step,and EMB is the tendency of automobile technology development.With BBW the vehicle can adapt to situations and determine the optimum force to apply to each different wheel, regardless of user input, to reduce the risk of injury in dangerous situations. BBW has ABS and traction control fully integrated into it, and performs these functions more efficiently and effectively. By fully integrating BBW with steer and throttle by-wire, it is possible to produce safer, more efficient automobiles, which can find the optimum way to react to a situation if the user is putting themselves at risk. It is also possible that, in the near future, a fully integrated by-wire automobile can obey speed signs, and eventually drive itself.This paper emphasized discussing the hardware of the BBW. The following several parts are the main content of this paper:1, Introduced the basic principle and the theory knowledge of the brake by-wire system, carries on the design to the EHB system and the EMB system overall structure;2, This paper has studied the system hardware and the software antijamming technology, designed a set to be able to guarantee the overall system communications security the control system;3, Designed one kind to be able to guarantee the power supply security the power supply system;4, Has with emphasis studied the redundant reliable brake implementing agency, carries on the system to the electrically controlled brake structure and the principle the introduction.5, Take the traditional barometric pressure braking system principle as the foundation, the research realization BBW moves the system to apply the brake the function.