Electronic Braking Systems

This chapter explains how the electronic and computer control of vehicle brakes is used to maximise braking efficiency, enhance road safety by stability control and enable mixed-mode braking, e.g. for regenerative braking. Antilock braking (ABS) and traction control (TCS) principles and technology are described and a procedure to measure ABS efficiency is presented. The development and implementation of Electronic Stability Control (ESC) on passenger cars and commercial vehicles is described along with some new intelligent electronic brake system control features such as automatic emergency braking systems. An overview of the principles and technologies of regenerative braking is presented, and the continuing need for friction brakes on road vehicles, especially for emergency braking, is explained. Brake technologies that could be suitable for vehicles with regenerative braking are listed and the importance of cooperation between friction and regenerative braking control systems and stability control systems is identified. Finally, driver interfaces with electronic braking are described with examples of visual and audible warning signals.