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10.10.1 Special functionality: vehicle speed
10.10.2 Setting up calculated speed
10.11 Configuring PWM outputs
Bosch Motorsport
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 'Computed
Channels' in the C 60 Project Tree. Do not drop it on 'C 60'!
A 'Calculated Speed Wizard' opens.
4.
Click 'Finish' when done.
The speed calculation is inserted into the C 60 Project Tree.
PWM
– Pulse Width Modulation
– Output frequency is constant
– 'On time' (duty cycle) controlled by input channel
C 60 has 4 PWM outputs
– Low-side switch
– Up to 2 A each
– Selectable output frequency
– Duty cycle controlled by characteristic curve
Data Logger C 60
Analog and Frequency Inputs | 10
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