battuh nói:
Bác nói thế thì chẳng lẽ khi xe vào một ổ gà hay ổ voi thì hệ thống VSC không có tác dụng để ổn định thân xe à?
Em xin trích dẫn từ wikipedia về Stability Control cho các bác khỏi cải nhau
During normal driving, ESC works in the background and continuously monitors steering and vehicle direction. It compares the driver's intended direction (determined through the measured steering wheel angle) to the vehicle's actual direction (determined through measured lateral
acceleration, vehicle rotation (
yaw), and individual road wheel speeds).
ESC intervenes only when it detects a probable loss of steering control, i.e. when the vehicle is not going where the driver is steering.
[18][/sup] This may happen, for example,
when skidding during emergency evasive swerves, understeer or oversteer during poorly judged turns on slippery roads, or hydroplaning. ESC may also intervene in an unwanted way during high-performance driving, because steering input may not always be directly indicative of the intended direction of travel (i.e. controlled
drifting). ESC estimates the direction of the skid, and then applies the brakes to individual wheels asymmetrically in order to create
torque about the vehicle's vertical axis, opposing the skid and bringing the vehicle back in line with the driver's commanded direction. Additionally,
the system may reduce engine power or operate the transmission to slow the vehicle down. ESC can work on any surface, from dry pavement to frozen lakes.
[19][/sup]
[20][/sup] It reacts to and corrects skidding much faster and more effectively than the typical human driver, often before the driver is even aware of any imminent loss of control.
[21][/sup] In fact, this led to some concern that ESC could allow drivers to become overconfident in their vehicle's handling and/or their own driving skills. For this reason, ESC systems typically inform the driver when they intervene, so that the driver knows that the vehicle's handling limits have been approached. Most activate a dashboard indicator light and/or alert tone; some intentionally allow the vehicle's corrected course to deviate very slightly from the driver-commanded direction, even if it is possible to more precisely match it.
[22][/sup]
Indeed, all ESC manufacturers emphasize that the system is not a performance enhancement nor a replacement for safe driving practices, but rather a safety technology to assist the driver in recovering from dangerous situations. ESC does not increase traction, so it does not enable faster cornering (although it can facilitate better-controlled cornering). More generally, ESC works within inherent limits of the vehicle's handling and available traction between the tires and road. A reckless maneuver can still exceed these limits, resulting in loss of control. For example, in a severe hydroplaning scenario, the wheels that ESC would use to correct a skid may not even initially be in contact with the road, reducing its effectiveness.
Các bác đi xe hơi vì sự an toàn là trên hết.
According to
Insurance Institute for Highway Safety and the U.S.
National Highway Traffic Safety Administration, <span style=""color: #800000;"">
one-third of fatal accidents could have been prevented by the technology.</span>
