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Theses

Reliability Assessment for Intelligent Vehicles System

Abstract : This PhD thesis is dedicated to the reliability assessment for intelligent vehicles platoon with the main aim of providing an approach to evaluate and enhance the safety of ITS. After a review of developments of ITS and DSRC, the reliability/QoS of end-to-end transmission of short range communication is analyzed. Then, the effects of transmission QoS on PID sampling control system and fuzzy control system are studied respectively.At first, The data protection methods used in Bluetooth communication protocol are analyzed for the data reliability. A node performance model is built, suitable for different distributions of service time of the node. Hence, a node in the network can monitor the QoS of the node by itself at any time. Based on this model, a QoS-aware ad hoc routing protocol (NPDSR) is proposed. This protocol has the advantages in maintaining requested QoS of communication, and it has less routing overhead.Secondly, for the effects on the control systems, time delay and loss are both discussed using mathematical and statistical simulation methods. Describing functions for both Mamdani and T-S type fuzzy controllers are provided. The stability of multi-fuzzy controller with communication delay is analyzed using Nyquist stability plots.Finally, in the perspective, the possible use of NS-2 on the model simulation and verification has been discussed, which is powerful in simulating different behavior of protocols, routing protocol comparisons. Also, it can be connected with Simulink to enhance performance the simulation of network control systems
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https://tel.archives-ouvertes.fr/tel-00866223
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Submitted on : Thursday, September 26, 2013 - 12:27:13 PM
Last modification on : Tuesday, November 24, 2020 - 2:18:22 PM
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Tian Zheng. Reliability Assessment for Intelligent Vehicles System. Other. Ecole Centrale de Lille, 2013. English. ⟨NNT : 2013ECLI0014⟩. ⟨tel-00866223⟩

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