Browse Publications Technical Papers 2002-01-0271
2002-03-04

Conceptual Design of Distributed by-Wire Systems 2002-01-0271

A design method for ultra-dependable control-by-wire systems is presented here. With a top-down approach, exploiting the system's intrinsic redundancy combined with a scalable software redundancy, it is possible to meet dependability requirements cost-effectively. The method starts with the system's functions, which are broken down to the basic elements; task, sensor or actuator. A task graph shows the basic elements interrelationships. Sensor and actuator nodes form a non-redundant hardware architecture. The functional task-graph gives input when allocating software on the node architecture. Tasks are allocated to achieve low inter-node communication and transient fault tolerance using scalable software redundancy. Hardware is added to meet the dependability requirements. Finally, the method describes fault handling and bus scheduling. The proposed method has been used in two cases; a fly-by-wire aircraft and a drive-by-wire car.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% 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

Cost-Effective and Fault Tolerant Vehicle Control Architecture for X-by-Wire Systems (Part 2: Implementation Design)

2005-01-1543

View Details

TECHNICAL PAPER

Achieving 10-9 Dependability with Drive-by-Wire Systems

2003-01-1290

View Details

TECHNICAL PAPER

Virtualization Technology and Using Virtual CPU in the Context of ISO26262: The E-Gas Case Study

2013-01-0196

View Details

X