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[VIPER]

Ti-am scris si dincolo, scriu si aici: ESP-ul tine in primul rand de ABS care nu este legat de franele disc pe spate.


"Electronic Stability Program

Overview

The electronic stability program (ESP) is a further enhancement to the anti-lock braking system (ABS) and traction control system (TCS). The ESP is designed to detect a difference between the driver's control inputs and the actual response of the vehicle. When differences are detected, the system intervenes by providing braking forces to the appropriate wheels to correct the path of the vehicle. This automatic reaction is engineered for improved vehicle stability, particularly during severe cornering and on low-friction road surfaces, by helping to reduce over-steering and under-steering.

To implement ESP functionality, additional sensors must be added to the ABS system. A steering wheel angle sensor is used to detect driver input with a yaw rate sensor and a low-G sensor that measure the vehicle response. Some ESP systems include a connection to the powertrain controller of the vehicle to enable reductions in engine torque when required.

Design Challenges

Electronic stability programs are based on existing ABS systems with the addition of several enhancements. The inclusion of analog electrohydraulic valves requires closed-loop, current-controlled pulse width modulation (PWM) outputs from the electronic control unit (ECU). The yaw and low-G sensors are typically located in a separate cluster near the vehicle�s center of gravity. Additional communication interfaces are required to enable data transfer to the powertrain ECU and sensor cluster.

An ESP system is required to operate as fail-safe during the event of a fault. The system relies on the electronic components to provide a high level of operational fault coverage to correctly initiate the fail-safe state."

[VIPER]

Cum spuneam si dincolo: configureaza o Fabia, pune ESP si vezi ce iese. Si am om care a si intrebat, si i s-a zis ca vine cu tamburi.