oversteer


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oversteer

[′ō·vər‚stir]
(mechanical engineering)
The tendency of an automotive vehicle to steer into a turn to a sharper degree than was intended by the driver; sometimes causes the vehicle's rear end to swing out.
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On the contrary, the less [k.sub.[phi]], the less cornering stiffness of rear axle and the oversteer tendency is increased.
The fuzzy detection stage in the upper level control uses vehicle signal inputs, like longitudinal vehicle speed (Vx), lateral acceleration (Ay), yaw rate (Avz), and road wheel angle (RWA), to detect and categorize unstable vehicle oversteer (OS) or understeer (US) events.
Engineers like Carl Sandberg at Volvo have to monitor and adjust their calculations to make sure bumps and lateral loads in bends result in predictable outcomes for the driver, including pitch, yaw rate and oversteer.
This engages the front axle when required for traction or to combat oversteer, but otherwise the car remains rear-driven.
Even when the rear is deliberately provoked into sliding out (oversteer) -- the very edge of a vehicle's grip -- the highly automated prototype makes the necessary corrections to follow its path safely and consistently, time after time.
Drifting is a technique that involves the driver deliberately pushing their car into a controlled oversteer motion throughout a series of corners.
It takes a certain ability to balance the car in order not to oversteer and crash, and like everything else, practice makes perfect.
An oversteer alarm is mounted on the steer doily along with a wireless audio alarm with lights for the tractor cab.
Hamilton said: "In practice we went from one end of the spectrum to the other, from acute understeer to huge oversteer.
"I had an oversteering car, I had an oversteer moment, and I put it backwards in the wall, which is very unusual for me.