The wheels' rotational speed is continuously detected by sensors and analyzed by the control unit. In case the wheel sticks, there are adjusting commands at the magnetic valves. The pressurization and depressurization phases follow. The braking effect is reduced and the wheel speeds up again. Our educational system demonstrates these phases.
The signal cabling reliably works through the back side so that the front remains clear. An oscilloscope or Sensor-CASSY can record measurements.
The electronic stability program ESP is a control system in the brakes and in the power train that prevents the vehicle from slipping to the side. The ABS prevents the wheels from getting stuck when braking; ASR avoids wheels spinning on startup. ESP ensures that the vehicle does not "slide" or become unstable.
The self-diagnosis can be executed in combination with a PC, and typical driving situations can be retraced. A software self-diagnosis and drive simulation are thus available. These can simulate the following situations:
- Driving maneuver "Quick steering and countersteering"
- Driving maneuver "Lane change with emergency stop (moose test)"
- Driving maneuver "Steering and countersteering multiple times"
- Driving maneuver "Acceleration/deceleration in a tight curve"
Optionally, other student measuring stations (740050) can be connected to the control unit. The students can record and analyze all measurements on the installation at their workstations.
