Download PDF by Huaqun Guo: Automotive informatics and communicative systems: principles

By Huaqun Guo

ISBN-10: 1605663387

ISBN-13: 9781605663388

Rising vehicular networks are speedy turning into a fact that may let a number of functions corresponding to protection, site visitors potency, and infotainment.

Automotive Informatics and Communicative structures: rules in Vehicular Networks and information alternate introduces vehicular networks and complicated info applied sciences utilized within the automobile quarter. proposing complicated examine works in safe distant tracking and regulate of cars, this publication offers destiny traits of knowledge applied sciences within the automobile area.

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Example text

For autonomous vehicles, it is necessary to have a TBW system for vehicle propulsion. Figure 6a illustrates the basic operation of a TBW system. The pedal sensor information along with throttle angle feedback is used to actuate the TBW motor to maintain the commanded throttle angle. Figure 6b shows an electronic throttle body (ETB) used in a TBW system. Figure 7 illustrates a possible interface between ABS / TCS / YSC systems and a TBW system. As indicated earlier, a TBW system is a natural fit in an active safety system or a combination of active systems (as in this case) where upon the ABS / TCS / YSC microprocessors share information with a TBW microprocessor and a supervisory microprocessor.

The concept vehicles with DBW systems have demonstrated such benefits (Stanton & Marsden, 1997). ). Model-based fault detection tech- niques can be one possible solution, which could lower the overall cost without compromising reliability. Fault Tolerant Control Fault tolerance is a property of a system that continues operating properly in the event of failure of some of its parts. It provides the ability of a system to provide a service complying with the specification in spite of faults. If operating quality decreases at all, the decrease is proportional to the severity of the failure, as compared to a naively-designed system in which even a small failure can cause total breakdown.

Redundancies in sensors, actuators, microprocessors, communication buses, power supplies are considered to achieve the fault tolerance. Two basic approached to fault tolerance: static redundancy and dynamic redundancy. Static redundancy uses three or more parallel modules that have the same input signal and the fault in any one module is detected by two-outof-three voting (Figure 13a). A single fault can such be tolerated by a triple redundant module. The maximum number of failures that can be tolerated by an n-redundant system via static redundancy is (n-1)/2 (n being odd).

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Automotive informatics and communicative systems: principles in vehicular networks and data exchange by Huaqun Guo

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