In recent years, the automotive industry, electronic stability control system large-scale popularization, in some countries even become mandatory installation standards. In China, electronic stability control system is also more and more attention by the OEM, low with the models are often Sensor at the expense of the equipment must also be equipped. Electronic technology innovation on the one hand to achieve the basic needs of safe driving, on the other hand also adapted to the consumer demand for car safety.
Typical automotive electronic stability control system generally consists of sensors, controllers and actuators in three parts. The sensor mainly includes four wheel speed sensors, steering wheel angle sensor, lateral acceleration sensor, yaw rate sensor, brake master cylinder pressure sensor, etc .; The controller is mainly electronic control unit, usually with the engine management system linkage; the implementation part includes Brake systems (vacuum boosters and piping and brakes), hydraulic regulators and so on. The electronic stability control system mainly refers Fuel Rail Pressure Sensor to the vehicle's active safety system, which is the further expansion of the anti-lock braking system and the traction control system function. On this basis, the yaw rate sensor, the lateral acceleration sensor and the steering wheel angle sensor are added Response to the steering, through the sensor and the controller to identify the actual state of the car and the driver's intention to compare and judge, and finally issued a command to adjust the size of the wheel longitudinal braking force to match the car's yaw movement, simply to correct the car driving attitude, Improve driving safety.
The yawing control torque is effectively distributed by the braking force or the driving force acting on the wheel during the running of the vehicle due to the lateral instability of the yaw and side-side movement, resulting in a cross- Swing moment. By controlling this yaw control torque, the yaw and side movements of the car can be effectively controlled, which is the working principle of the ESC. It is the essence of the electronic stability system to prevent the vehicle from sliding, to improve the avoidance of steering and overstepping. Due to the advanced technology and the attention of all walks of life, North America and Europe are the highest areas of ESC assembly. US and EU legislative departments require mandatory assembly of ESC, since September 2011, the United States all 4.5 tons of vehicles must be equipped with ESC. While all European passenger cars and light, medium and heavy vehicles have been mandatory ABS Sensor to install the ESC system since November 2014. It is worth mentioning that Japan, South Korea's assembly rate is also higher than the world average. While China is currently no mandatory equipment ESC regulations, the penetration rate is relatively low. With the rapid development of China's auto industry and the importance of car safety, the future of the ESC will no longer be exclusive with high.
In China, to promote the main development of ESC factors are consumer demand, car prices and unmanned driving the development of new technologies, you can see, ESC from the initial mainly used in Mercedes-Benz, Audi and other high-end models, Magic speed S5, SWM Siwei car X7, Po Chun 510, Zotye SR9 and so more and more independent models have also achieved the ESC standard, the application of more and more popular. ESC trends, from a technical point of view, the body stability system will be smaller and lighter, the cost will be reduced, so that more owners can 'afford', need to use. On the other hand, highly integrated is the development trend of ESC.
In the system integration, especially the ESC controller unit module, due to the technical requirements, product reliability is high, enterprises need to have long accumulated experience, is mainly based on Bosch, ZF TRW, Edwards as Throttle Position Sensor the representative of foreign-funded enterprises occupy the leading position , The market concentration is higher. The leading domestic brake system enterprises have gradually developed successful ESC products, and supporting customers, such as Wuhan Yuanfeng, Asia-Pacific Electrical and Mechanical, and so on.