Does ABS have anything to do with ESP? What is its main function?

it matters! You can understand the relationship between the two from the following information! In Spanish, "Spain" is Espa? A, it's Spanish in English. Electronic Stability Program (ESP) is a patent of Bosch Company. ESP system is actually a traction control system. Compared with other traction control systems, ESP can control not only the driving wheel but also the driven wheel. For example, the rear wheel drive car often turns too much. At this time, the rear wheel is out of control and flicks its tail, and ESP will slow down the outer front wheel to stabilize the car. When there is too little steering, in order to correct the tracking direction, ESP will slow down the inner rear wheel, thus correcting the driving direction. ESP system includes ABS (Anti-lock Braking System) and ASR (Anti-Side Slip System), which is the functional extension of these two systems. Therefore, ESP can be regarded as the most advanced form of automobile anti-skid device at present. ESP system consists of control unit, steering sensor (monitoring the steering angle of steering wheel), wheel sensor (monitoring the speed rotation of each wheel), sideslip sensor (monitoring the state of the car body rotating around the vertical axis), lateral acceleration sensor (monitoring the centrifugal force when the car turns) and so on. The control unit judges the running state of the vehicle through the signals of these sensors, and then sends out control instructions. The difference between cars with ESP and cars with only ABS and ASR is that ABS and ASR can only react passively, while ESP can detect and analyze car conditions and correct driving mistakes before they happen. ESP is particularly sensitive to over-steering or under-steering. For example, when a car turns left and over-steering (turning too fast), it will flick its tail to the right. When the sensor senses the sliding, it will quickly brake the right front wheel to restore its adhesion and produce an opposite torque to keep the car in the original lane. Of course, everything has a limit. If the driver drives too fast blindly, it is difficult to preserve any existing safety devices. Components of ESP 1. Sensors: steering sensor, wheel sensor, sideslip sensor, lateral acceleration sensor, steering wheel accelerator brake pedal sensor, etc. These sensors are responsible for collecting data on the state of the car body. 2. ESP computer: calculate the data collected by the sensor, calculate the body state and compare it with the preset data in the memory. When the data calculated by the computer exceeds the pre-stored value in the memory, that is, when the car body is near or out of control, the actuator is ordered to work to ensure that the driving state of the car body can meet the driver's intention as much as possible. 3. Actuator: To put it bluntly, the actuator of ESP is the braking system of four wheels. In fact, ESP is to help the driver step on the brakes. Different from the car without ESP, the brake system of the car equipped with ESP has the function of accumulating pressure. Simply put, pressure storage means that the computer can pressurize the brake pipe of a wheel for the driver when the driver does not step on the brake as needed so that the wheel can generate braking force. In addition, ESP can also control the power output of the engine. Anyway, he can get involved in related equipment! 4. Communication with the driver: ESP light on the dashboard. The key technology of ESP is now a typical structure of automobile control system, including traditional brake system vacuum booster, pipeline and brake, sensor, wheel speed sensor, steering wheel angle sensor, lateral acceleration sensor, yaw rate sensor, brake master cylinder pressure sensor, hydraulic regulator, automobile stability control electronic control unit and auxiliary system engine management system. Therefore, the development of the system depends on the breakthrough of the following key technologies: ① the improvement of sensing technology ". Sensors used in the system include automobile yaw rate sensor, lateral acceleration sensor, steering wheel angle sensor, brake pressure sensor and throttle opening sensor, etc. They are all indispensable and important components in the system. Improving their reliability and reducing costs have always been the goal pursued by developers in this field. (2) The structural design of hydraulic braking system with small volume, light weight and low cost. ③ Software and hardware design. Because of the need to estimate the state variables of vehicle operation and calculate the corresponding motion control quantity, the calculation processing capacity and program capacity are several times larger than that of the system. Generally, multiple structures are adopted. The research of software is the most important, and the modern control theory based on model has been difficult to adapt to the control of such a complex system, so it is necessary to seek a nonlinear control algorithm with strong robustness. ④ By improving the control function. Through the interconnection with the engine and transmission system, it can better play its control function. For example, the automatic transmission transmits the current mechanical transmission ratio, torque ratio of hydraulic torque converter and the gear position to estimate the driving force on the driving wheel. When it is recognized that it is on the road with low adhesion coefficient, it will prohibit the driver from engaging in low gear. When starting on this road, the transmission system will be informed that it should be put into second gear in advance, which will significantly improve the starting comfort of high-power cars. The working process of ESP 1. This car turns left when the vehicle has understeer (that is, it is too fast to turn). ESP sensors will tell the computer the news of understeer, and then the computer will control the braking of the left rear wheel to generate a pulling force and a torsion force to counter the understeer trend of the front of the car pushing to the right. 2, or turn left, when the rear wheel is not enough to grasp the ground or when the accelerator of the rear-wheel drive is stepped on hard, there is excessive steering (that is, the ass is dumped). ESP will control the right front wheel braking and reduce the power output of the engine. Correct the wrong steering posture. 3. When the linear brake deviates due to uneven ground adhesion (at this time, the car with ABS will also appear. I always play in the snow when it snows. At this time, the car body will deviate to the side with strong grip). ESP will control the wheels with strong adhesion to reduce the braking force, so that the car can follow the driver's expected driving route. Similarly, when steering while braking, ESP will also control some wheels to increase the braking force or decrease the braking force so that the car can move according to the driver's intention. The most important characteristics of ESP