ESP is the abbreviation of English ElectronicStabilityProgram, which is translated as "electronic stability program" in Chinese. It analyzes the information of vehicle running state from various sensors, and then sends rectification instructions to ABS, EBD and so on.
Help the vehicle maintain dynamic balance. ESP can keep the vehicle in the best stability in all situations, especially in the case of oversteer or understeer.
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Development of esp
Automotive electronic stability control system is a newly developed electronic device in recent years, which is the inheritance and further expansion of anti-lock braking and traction control functions. Bosch Company of Germany began mass production of anti-lock braking system in the mid-1980s, which greatly improved the braking stability of vehicles.
However, it was later found that the anti-lock braking system could not solve the wheel slip problem when the vehicle started to accelerate on the road with low adhesion. Although there was a patent to solve the problem of driving wheel slip since 1970s, the traction control technology was not put into practical use until Volvo developed the first set of electronic traction control system products.
1986, Bosch integrated the anti-lock braking system and traction control system and applied them to Mercedes-Benz S-Class cars, marking the arrival of the era of ABS/TCS integration.
However, because ABS only works when braking and TCS only works when driving, the integration of ABS/TCS can only solve the longitudinal stability problem of the vehicle, but can not solve the lateral stability problem caused by extreme working conditions such as vehicle driving, braking steering and high-speed steering.
In cooperation with Bosch, BMW developed the first generation stability control system based on ABS/TCS at 1992 to solve the lateral stability problem of vehicles. 1995 ESC system was mass-produced and applied to Mercedes-Benz S-Class sedan for the first time.
Reference source? Baidu Encyclopedia-Body Electronic Stability System
Baidu Encyclopedia -ESP Working Principle