【摘要】：隨著汽車技術(shù)的發(fā)展，汽車上的電子控制單元不斷增多，汽車電子化成為了汽車技術(shù)的發(fā)展趨勢。FlexRay總線作為新一代汽車內(nèi)部網(wǎng)絡(luò)通信協(xié)議，具有高帶寬、確定性和可靠性等特點，能夠滿足未來先進汽車高速控制的通信需要。本課題以國家電子信息產(chǎn)業(yè)發(fā)展基金為依托，查閱和收集了大量的國內(nèi)外文獻和研究資料，對FlexRay總線的實時調(diào)度和網(wǎng)絡(luò)管理需求進行了深入研究，從而達到提高總線系統(tǒng)性能的目的。 論文首先介紹了汽車FlexRay總線系統(tǒng)的課題背景，，分析了國內(nèi)外的研究現(xiàn)狀。然后針對FlexRay總線靜態(tài)段調(diào)度無法應(yīng)對系統(tǒng)動態(tài)變化的問題，提出一種基于動態(tài)分配的靜態(tài)段調(diào)度方法。引入調(diào)度節(jié)點，以傳輸觸發(fā)消息（TM）實現(xiàn)通信周期的循環(huán)調(diào)度，給出了靜態(tài)消息的周期調(diào)度表（PST）的構(gòu)建方法，并對其內(nèi)容進行動態(tài)更新。為保證FlexRay總線系統(tǒng)可靠性和安全性，提出在FlexRay總線動態(tài)段中實現(xiàn)OSEK網(wǎng)絡(luò)管理的方法，設(shè)計了網(wǎng)絡(luò)管理協(xié)議數(shù)據(jù)單元到FlexRay數(shù)據(jù)幀的映射結(jié)構(gòu)以及網(wǎng)絡(luò)管理狀態(tài)，給出了網(wǎng)絡(luò)管理的具體過程，并分析了網(wǎng)絡(luò)管理消息的發(fā)送時延。 最后，利用CANoe和DaVinciNetworkDesigner搭建仿真實驗平臺，根據(jù)系統(tǒng)需求，設(shè)計了FlexRay總線系統(tǒng)的仿真模型和通信方案，驗證了本文提出的調(diào)度方法和網(wǎng)絡(luò)管理方法的有效性和可行性。
[Abstract]:With the development of automobile technology, the number of electronic control units on the automobile is increasing, and the automobile electronization has become the developing trend of automobile technology. As a new generation of internal network communication protocol of automobile, FlexRay bus has a high bandwidth. The characteristics of certainty and reliability can meet the communication needs of the future advanced automobile high-speed control. Based on the National Electronic Information Industry Development Fund, this paper has consulted and collected a large number of domestic and foreign literature and research materials, and made a deep research on the real-time scheduling and network management requirements of FlexRay bus. In order to achieve the purpose of improving the performance of the bus system. Firstly, this paper introduces the background of automobile FlexRay bus system, and analyzes the research status at home and abroad. Then a static segment scheduling method based on dynamic assignment is proposed to solve the problem that the static segment scheduling based on FlexRay bus can not cope with the dynamic changes of the system. The scheduling node is introduced to realize cyclic scheduling of communication cycle by transmitting trigger message (TM). The method of constructing periodic scheduling table (PST) of static messages is presented, and its contents are dynamically updated. In order to ensure the reliability and security of FlexRay bus system, a method of realizing OSEK network management in FlexRay bus dynamic segment is proposed. The mapping structure of network management protocol data unit to FlexRay data frame and the network management state are designed. The concrete process of network management is given, and the transmission delay of network management message is analyzed. Finally, the simulation experiment platform is built with CANoe and DaVinciNetworkDesigner. According to the requirement of the system, the simulation model and communication scheme of FlexRay bus system are designed, and the validity and feasibility of the scheduling method and network management method proposed in this paper are verified.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：U463.6;TP336

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