Introduction
electronic stability control system has many brands of cars, but the manufacturers are just different names, such as Volkswagen called ESP, Honda called VSA, Toyota cares called VSC, the electronic stability control system called generalized ESC was rigorous.
● What is electronic stability control?
automotive electronic vehicle stability control system is a new type of active safety systems, automotive anti-lock braking system (ABS) and traction control system (TCS) is further extended function, and on this basis, , increase the lateral stability of the yaw rate sensor when the vehicle turns with the measured acceleration sensor and a steering wheel angle sensor, the ECU controls the front and rear, left and right wheel driving force and braking force, to ensure that the vehicle is traveling.
The system consists of three parts sensor, an electronic control unit (ECU) and the actuator’s monitor vehicle operation state by the electronic control unit, an engine of the vehicle and a brake system control intervention. Typical automotive electronic stability control system on the sensor includes four wheel speed sensors, steering wheel angle sensor, lateral acceleration sensor, yaw rate sensor, a brake master cylinder pressure sensor, the operative part comprising a conventional braking system (vacuum booster, and brake lines), a hydraulic actuator, etc., an electronic control unit in conjunction with the engine management system can intervene and adjust the engine power output.
This system is mainly vertical and lateral stability of the vehicle is controlled to ensure that the vehicle travels in accordance with the driver’s awareness. Based electronic stability control system is an ABS anti-lock brake function, the system in case of a tire brake locks up, continuous braking hundreds of times in one second, somewhat similar mechanical ldquo; Diansha rdquo; . Thus, when the vehicle full brake, the tires can still guarantee the scroll, the effect is better than rolling friction to hold the sliding friction effect after death, and can control the direction of travel.
On the other hand the system will work together with the engine ECU, by comparing the wheel slip when the rotational speed of each wheel, the electronic system determines whether the drive wheel slip, once the throttle is automatically reducedDoor intake air, engine speed is reduced to reduce the power output, the slip of the drive wheel brake. So that it can reduce tire slippage and maintain optimum grip with the ground between fertility power output, at this time no matter how the oil, the driving wheels will not slip phenomenon.
The system to ensure the lateral stability of the vehicle when the aspects are embodied in the system by the angle sensor, lateral acceleration sensor signal and the wheel speed sensor found occurred while the vehicle understeer or over, the system controlling a plurality of individual wheels or brake to adjust the car body posture changing lanes or when cornering, the automobile cornering or lane changing can be more smooth and safe.
● brand name are not the same
In fact, people usually say ESP is a registered trademark of Bosch accurate writing should be ESPreg ;. In a related ECE R13H, FMVSS 126 and even GTR No.8 regulations, the electronic stability control system known as ESC, so from an academic point of view, the electronic stability control system called generalized ESC was rigorous.
At present, the world major supplier of electronic stability control systems have six suppliers, namely Bosch, TRW, Denso, Aisin Seiki, mainland China, Delphi, all the manufacturers of the systems basically come from several purchases, then known as different names. However, even in the same system functions on different models will have different, here we only say that the most basic functions.
common brand vehicle stability system name application brand ESP Audi, Volkswagen, Suzuki, Fiat, Chrysler, Mercedes-Benz, Peugeot, Citroen, Ford (domestic) and other VSA Honda, Acura VDC Nissan, Infiniti, Subaru DSC BMW, Jaguar, Land Rover, Mazda, MINI and other VSC Toyota Reiz VDIM Toyota (Crown), Lexus ESC universal (domestic models) StabiliTrak General (imported cars) ADVANceTrac Ford Edge VSM modern
Summary:
Although the names are different, but the principle of a stable system of vehicle manufacturers are basically the same. Toyota and BMW DSC VDIM system with other manufacturers slightly different, VIDM joined the system of intervention in the steering system, the trajectory correction driver driving a little easier; DSC system on the BMW’s adjustable features are added, reducing the impact on driving pleasure. In addition, ESC system is not isolated, it is also possible to extend the basis for a series of active safety and driver convenience features.
ESP Introduction Bosch is the first company to Electronic Stability Program (ESP) volume production of the company. Because ESP Bosch’s patented product, so only Bosch’s electronic stability system can be called ESP. After Bosch, there are many companies developed a similar system, such as Toyota and BMW’s DSC, VSC. ESP stands for: (Electronic Stability Program). Comprising ABS and ASR, extending the functions of the two systems.
ESP system consists of a control unit and a steering sensor (steering wheel angle monitor), a wheel sensor (monitoring of each wheel rotation speed), yaw sensor (monitoring of the vehicle body about a rotation axis perpendicular state), lateral acceleration sensor (monitoring automotive centrifugal force when cornering) and other components. The control unit determines the operating state of the vehicle by means of signals from these sensors, and then issuing a control command. There are only ABS and ESP with ASR cars, the difference between them is that ABS and ASR can only react passively, while ESP is able to detect and analyze driving condition and correct errors before they occur. ESP particularly sensitive to oversteer or understeer, oversteer, for example, automobile generates left to the right when the drift (turning too fast) when slippery, the sensor will slide quickly feel the right front wheel brake attached to acclimatize efforts to produce a reverse torque to keep the car in the original lane. Of course, everything has a range of degrees, if blindly speeding motorists, and now any safety devices are difficult to guarantee their safety. If you do not understand the working principle of the ESP can watch the following video: 
ESC
Introduction
ESC is a generic term for vehicle stability control system , GM’s brand domestic models are equipped with ESC systems, such as the Buick Regal, snow Folan Mai Rui Bao. Another Ford Escape wing stroke and so on. ESC (Electronic Stability Control) and the principle of control and ESP systems the same way, Delphi and TRW production systems are named ESC.
“Buick Regal (left), snow Folan Mai Rui Bao (right) and other models equipped with ESC systems.”
ESC main role is excessive to produce the slide will quickly feel the right front wheel brake particularly sensitive adhesion to restore steering or understeer, oversteer, for example, when the car left slippery (drift turn right, sensor senses too fast), the produce a reverse torque to keep the car in the original lane.
DSC
As the name has already been registered ESP German Bosch company. Therefore, electronic stability systems developed by other companies can only use a different name. As BMW’s DSC. Its properties are similar to the ESP Bosch in Germany, it can ensure that the vehicle running stability, and guarantee starting or acceleration traction of all wheels. It can detect the first signs of oversteer or understeer, DSC will make a motion to prevent the occurrence of vehicle drift phenomenon.
VSC
Introduction
VSC is called the Vehicle Stability Control, Toyota company called vehicle stability control system. VSC as an auxiliary control system of the vehicle, it can control the skidding phenomenon due to the steering wheel too hard or slippery road surfaces caused. When the sensor detects the vehicle skidding, the system can automatically control the engine power and braking respective wheels.
VSC ready monitor vehicle dynamic information provided by the sensors when the vehicle is traveling, in order to understand the current vehicleSituation. When the slip body, and the smooth running of each sensor information data is not the same, whereby the system determines that the vehicle is slipping, the automatic control of the vehicle involved, in order to throttle and brake control dynamics of the vehicle is corrected. Since all phenomena are slipping because some wheels exceeds the wheel can carry the adhesion caused by the slippage problem therefore developed for the VSC system can provide a high standard of active safety. When
The current wheel or rear wheel grip limit is reached, automotive steering stability will be greatly affected. When the vehicle is traveling along a curve, such as the front wheels when the grip limit is reached first, will cause understeer, the steering wheel the driver how to play at this time can not be reduced turning radius, making it difficult to follow the track driving, steering malfunction occurs. If the rear wheel attachment limit is reached first, then drift phenomenon caused by the vehicle itself becomes unstable. VSC brake system through a separate embodiment of the different wheels, the vehicle produces a corresponding rotational torque, or drift to avoid Tuitou phenomenon.
The front wheel side slip suppression, first the rear wheel brake to produce a rotational movement inwardly, and four wheel brake, the vehicle speed falls below a certain level, in order to balance the rotational movement of the steering in the range of cornering force. When the rear wheel side slip occurs, the outer front wheel is braked, to produce a rotational movement outwardly to ensure the stability of the vehicle.
VSA
Introduction
VSA is Vehicle Stability Assist English abbreviation, Honda and Acura term for electronic stability control system, its role and principles and ESC is the same, so that the car can be more stable and secure when cornering or changing lanes.
VSM
Introduction
VSM is Hyundai electronic stability control system title, its role and ESC the same, but modern manufacturers call it the VSM. VSM vehicle stability control system is the ESC and MDPS (modern electric power steering system called) combining the two systems together, road conditions and working condition according to ESC, Power is applied to the steering wheel right by MDPS.
PSM
Introduction
PSM is a Porsche term for vehicle stability control system, which stands for Porsche stability management (PSM), even when the dynamic performance of the vehicle can be close to the limit remains stable. Sensors continuously monitor the direction of the vehicle, vehicle speed, yaw rate and lateral acceleration. PSM can calculate the actual direction of travel in any given time use the information. If the vehicle began oversteer or understeer, PSM will selectively braking the wheels, the vehicle to restore stability.
VDIM
Introduction
VDIM is Vehicle DynAMIcs Integrated Management abbreviation, it is the Vehicle dynamics integrated management system on the Toyota Crown and Lexus cars, it is a form of electronic stability control systems. The principle is to integrate the existing ABS, TRC and VSC, respectively, individually controlled functions into one system, unified control, the car also has an ideal sport performance and highly advanced active safety features.
VDIM system acquires the key data in each corner of the vehicle from many sensors disposed track the traffic information such as wheel speed, brake drag, and body movement, etc. Vehicle Dynamics Integrated Management system integration application more stability and safety systems, such as anti-lock braking system, electronic brake force distribution, traction control, vehicle stability system, electronic power steering system, it can achieve a single set of the independent operation best to none.
For example, when the vehicle is prone to slip on wet roads turning, then by controlling the output power of the engine, as well as braking control, the slip can be controlled, and coordinated by the active steering control, the VGRS variable steering gear ratio, will control the front wheel steering angle, the vehicle posture stability.
StabiliTrak
Introduction
StabiliTrak a GM vehicle to another embodiment called electronic stability control system, in fact, the principle is substantially similar to ESC. This will be the common name for the general import General Motors, for example GMC cars, Cadillac and other imports.
Advance Trac
Introduction
with a roll stability control ADVANceTracreg; Ford’s electronic technique called stability control system, the system comprising the system of ABS systems, traction control system (the TCS), electronic stability control systems and (the ESC), roll stability control system (RSCreg;), the system can effectively avoid skidding and rollover, full protection of the safety of the driver.
