Bosch MS 50.4 Manual page 70

11 | Analog and Frequency Inputs
11.4.1 Special functionality: Vehicle speed
11.4.2 Setting up calculated speed
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Channels available
in Computed sources
Available
measurements
for channel
This functionality allows:
– high performance vehicle owners to measure wheel spin under acceleration and
wheel slip/lock under braking.
– calculating vehicle 'speed over ground'.
Vehicle speed calculation function
– Calculating vehicle speed of 2 wheel drive: (Wheel speeds of non-driven axle as input)
– Calculated speed is average of both speeds if speed difference between wheels <
limit.
– Calculated speed is maximum of both speeds if speed difference between wheels
> limit.
– Calculating vehicle speed of 4 wheel drive: (Wheel speeds of all wheels as input)
– Calculated speed is speed of 2nd fastest wheel.
1. Click on tab 'System Overview'.
2. Click on 'Measurement Sources' in the Toolbox.
3. Drag the 'Speed' computed source from the Toolbox and drop it on the project name
in the VCU MS 50.4 Project Tree. Do not drop it on 'VCU MS 50.4'!
Vehicle_Control_Unit_VCU_MS_50.4_Manual
Calculation of hysteresis
channel
Bosch Motorsport