Latest technology, Electronic Stability Programme (ESP) used in Automobile

 Electronic Stability Programme (ESP)

Electronic Stability Programme (ESP) is a computerized technology that improves a vehicle's stability by detecting and reducing loss of traction (known as skidding). Some ESP systems also reduce engine power until control is regained. ESP System is designed to stabilize the vehicle during cornering maneuvers. Electronic stability control works in conjunction with a vehicle' s anti-lock braking system

(ABS), traction control and electronic power steering system. Components of ESP include steering wheel angle sensor, yaw rate sensor, lateral acceleration sensor, wheel speed sensor, roll rate sensor and longitudinal acceleration sensor. ESP checks where you are steering and where the vehicle is actually going. If there is difference in the direction of steering and vehicle direction of movement, the ESP will intervene in a number of ways. 1ypically, the vehicle ESP will communicate with Traction control system (TCS) and engine control unit (ECU) to reduce power, if the driver is applying throttle. This helps keep the vehicle from worsening its situation.

ESP decides what wheel to brake applies the brake at individual wheels with varying degrees of pressure and duration. ESP also decides whether to reduce engine torque to stabilize the vehicle. By doing so, the system can help the vehicle correct its path and prevent it from leaving the roadway, straying across a divided highway, or even rolling over. It allows for higher speeds at cornering with reduced skidding or better traction. 

Working of ESP:-

           ESP is always active. A microcomputer monitors the signals from the

ESP sensors and checks 25 times a second, whether the driver's steering input corresponds to the actual direction in which the vehicle is moving. If the vehicle moves in a different direction ESP detects the critical situation and reacts immediately independently of the driver. It uses the vehicle's braking system to "steer" the vehicle back on track. With these selective braking interventions ESP generates the desired counteracting force, so that the car reacts as the driver intends. ESP not only initiates braking intervention, but can also intervene on the engine side to accelerate the driven wheels. So, within the limits of physics, the car is kept safely on. the desired track.