Porsche 911 GT3 R 2012, Техническое руководство

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10.12. Traction control
The 911 GT3 R is equipped with a traction control. The application of the
system is carried out by Bosch Modas.
A comparison of desired and actual slip is the basic principle of the
traction control. A PID controller takes care of the necessary torque
corrections.
The actual slip is calculated by using the signals from the wheel speed
sensors. The target slip is derived from a vehicle model. In case the
actual slip is greater than the actual slip the traction control comes into
play as long as the actual slip is lower or equals the target slip.
Parameters of the following categories offer the possibility to adapt the
traction control:
• slip dependant parameters
• parameters of the PID controller
•
driver influence
•
track influence
10.12.1. Adapt the traction control
The Bosch software Modas is necessary to customise the traction control
functionality. A special connection cable is necessary (see parts catalog).
By switches on the steering wheel the setting of the traction control can
be changed. 12 different settings are available (1… less traction control
intervention 12 … more traction control intervention, 0 … traction control
off). In addition there is a dry / wet switch on the centre console. Under
wet the conditions the switch should be flipped to wet in order to achieve
optimised traction control interventions for wet conditions.