ABSTRACT
The components and subsystems in a vehicle are linked together through asystemofnetworkedcommunication.Thecommandsignals,thesensor feedbacksignals,andthesystemoutputvariablesinterconnectthevehicle driver,thesupervisorycontroller,andthesubsystemsandcomponents throughthisautomotivecommunicationnetwork.Thetypeofnetworked communication used in automobiles is known as controller area network (CAN).CANisaspecialtypeoflocalareanetwork(LAN)thatusesaserial multi-mastercommunicationprotocol.CANsupportsdistributedreal-time control with a very high level of security, and a communication rate of up to 1Mbps.TheCANbusisideallysuitableforapplicationsoperatinginnoisy and harsh environments, such as in the automotive and other industrial ‹eldsthatrequirereliablecommunicationormultiplexedwiring.Thischapterpresentsthebasicsofnetworkcommunicationsandin-vehiclecommunications,leadingtoamoredetailedtreatmentofCANcommunications.The CANprotocoliscoveredinsuf‹cientdetailsothatonecanpracticeimplementation in a vehicle or in other industrial systems.
