Event-Triggered Control for String-Stable Vehicle Platooning
article
Cooperative adaptive cruise control (CACC) is a promising technology that is proven to enable the formation of vehicle platoons with small inter-vehicle distances, while avoiding amplifications of disturbances along the vehicle string. As such, CACC systems can potentially improve road safety, traffic throughput and fuel consumption due to the reduction in aerodynamic drag. Dedicated short range communication (DSRC) is a key ingredient in CACC systems to overcome the limitations of onboard sensors. However, wireless communication also involves inevitable network-induced imperfections, such as a limited communication bandwidth and time-varying transmission delays. Moreover, excessive utilization of communication resources jeopardizes the reliability of the DSRC channel. The latter might restrict the minimum time gap that can be realized safely. As a consequence, to harvest all the benefits of CACC, it is important to limit the communication to only the information that is actually required to establish a (string-)stable platoon over the wireless network and to avoid unnecessary transmissions. For this reason, an event-triggered control scheme and communication strategy is developed that takes into account the aforementioned networkinduced imperfections and that aims to reduce the utilization of communication resources, while maintaining the desired closedloop performance properties. The resulting L2 string-stable control strategy is experimentally validated by means of a platoon of three passenger vehicles.
Topics
TNO Identifier
954816
ISSN
15249050
Source
IEEE Transactions on Intelligent Transportation Systems, 18(12), pp. 3486-3500.
Publisher
Institute of Electrical and Electronics Engineers Inc. (IEEE)
Article nr.
8025403
Pages
3486-3500
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