Browse Publications Technical Papers 2000-01-0268
2000-03-06

Avoiding Signal Aliasing in Event Based Engine Control 2000-01-0268

Many modern control strategies for engine control are based on event based sampling. Operating the control strategy in the event domain makes it possible to obtain samples at specific crank shaft angles in the engine cycle, which is often desirable for certain control strategies. One of the biggest disadvantages involved with event based strategies is signal aliasing at low engine speeds or a high computational burden at higher engine speeds.
This paper presents an easy solution to the aliasing problem above. If the data between the event based samples is stored using a time based strategy, it is shown here that a subsequent treatment of the sampled data as a time series together with a suitable low pass filter structure can avoid aliasing.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Control Oriented Modeling of the Gas Exchange Process in Variable Cam Timing Engines

2006-01-0660

View Details

TECHNICAL PAPER

Design of Engine Control Systems for Large Heavy Duty Applications

2007-01-1598

View Details

TECHNICAL PAPER

The Position Control of a Gasoline Engine during Shutdown

2017-01-1630

View Details

X