Signal preprocessing consists of signal detection and conditioning. These control unit functions also synchronize events.
Signal detection can be periodic (every 20 or 100 ms) or speed-synchronised. The raw values are buffered for
subsequent processing.
The following points are considered in more detail below:
• Road-speed measurement
• Speed measurement
• Camshaft-synchronous event control
• Crankshaft/camshaft synchronisation
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