DAVIS TECHNOLOGIES TMS-750-SL, Руководство пользователя

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Davis Technologies TMS-750-SL
www.moretraction.com
Appendix A
Another advantage of these systems is that they are
actually able to detect wheel slip better than most wheel
speed sensor based systems. The reason for this is that
our systems monitor the rotation of the driveline. With 8
triggers on the driveline you can measure slip within 1/8
of a rotation. Now factor in a 5:1 final drive (rear end)
ratio and tire rotation can be measured within 1/40 of a
turn (that is about 2-3 inches on most tires). The fact that
the driveline is turning much faster than the wheels,
amplifies the slip at the driveline, making these systems
much more sensitive than the typical wheel speed
systems. Put simply, if the tires slip the driveline revs.
The only reason for the sudden increases in revs in the
driveline is wheel spin.
Sensor based systems usually measure tire rotation
about every 1/4 of a turn. The front and rear are
compared to each other to check for slip. With a margin
of error of 1/4 of a turn at each wheel, it may take as
much as 1/2 of a turn of tire slip for the system to react. If
a tire is allowed to slip a half a turn before a correction is
made, it is very hard to stop the slip.
A system that uses a preset percentage of slip, between
the rear wheel speed to front wheel (or ground) speed,
cannot compensate for these changing conditions that
are inherent in all types of racing.
Traction Control Is What We Do!