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12.2.6 Configuring a frequency input
Bosch Motorsport
– DDU 9 filters have constant, frequency independent delay
– Delay (e.g. 22 samples at 10 ms) is corrected during recording
– No delay filtered vs. unfiltered in recorded data
– Correction is (of course) not possible for real time data (display, online, PWM out)
– Use filtered data for recording, use unfiltered data for real-time
Example: measurement of wheel speed
– Pulse wheel attached to wheel
– Each passing tooth of pulse wheel triggers hall sensor
– Calculation of wheel speed with wheel circumference
1.
Click on 'Measurement Sources' in the Toolbox.
2.
To expand the list of 'I/O Channels', click on the '+' in the DDU 9 Project Tree.
3.
Drag the 'Velocity' digital signal source from the Toolbox and drop it on the desired
'REV' input channel in the DDU 9 Project Tree.
Drag + Drop
The 'Velocity Wizard' opens.
4.
Select the sensor type. The DDU10 works with Halleffect and DF11 sensors.
DDU 9
Analog and Frequency Inputs | 12
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