基于模型设计的汽车PEPS系统研究与设计

发布时间：2018-05-28 20:31

本文选题：PEPS系统 + 基于模型设计　；参考：《吉林大学》2017年硕士论文

【摘要】：汽车作为日常生活中一种不可替代的交通工具,人们对它设计了非常严格的舒适性以及安全性要求,对于PEPS(Passive Entry and Passive Start)系统,其满足了这些需求,已经逐渐成为汽车应用中主流的方案选择。车主只需要随身携带智能钥匙,不需要对其进行任何的操作,就可以实现车门的开闭锁以及启动发动机的功能。PEPS系统舒适以及安全的优势,使其具有很大的推广空间。根据PEPS系统复杂功能和安全技术要求,本论文采用基于模型的系统开发方法。这种基于模型设计的开发模式在汽车电子行业领域已经逐渐使用,图形化的设计理念,便于交流和维护,并且能够自动生成嵌入式代码,具有极大的高效性和经济性,拥有广阔的应用前景。本论文围绕系统结构功能,基于模型设计的流程,系统总线仿真,测试验证等方面,进行了如下研究:(1)对PEPS系统进行分析和研究,详尽描述了PEPS系统的结构和功能,主要分析了无钥匙进入、无钥匙启动、电子转向柱锁控制以及报警与提示的功能,为基于模型设计方法的实现提供控制策略基础。(2)介绍基于模型设计方法的基本概念以及流程,编写系统需求文档,使用Simulink/Stateflow工具对PEPS系统的控制器进行层次化建模,通过图形化的语言设计和实现系统的功能。并且在开发过程中,完成模型检查,模型验证,定点化设计,软件在环测试等流程,通过代码优化配置,使用Embedded Coder工具自动生成嵌入式代码以及相关的代码报告,实现模型与代码的一致性检查。(3)设计和研究PEPS系统CAN总线的工作过程,通过CANoe环境的总线测试工具,搭建系统的整体网络仿真环境,实现系统总线的监测以及分析。设计CAN总线数据库,建立系统交互面板,搭建系统仿真拓扑结构,编写节点CAPL语言仿真程序,以图形化的形式反映信号通信情况,观察及分析仿真结果,实现系统的总线网络仿真。(4)为验证自动生成的上层算法代码准确性,将其与底层驱动代码进行整合,编译下载到MC9S12XS128的开发板中,并使开发板与总线测试工具进行CAN总线的通讯,测试代码的正确性和可靠性,实现系统功能,确保代码与功能的一致性,满足设计要求。
[Abstract]:As an irreplaceable vehicle in daily life, the automobile has been designed for the strict comfort and safety requirements. For the PEPS(Passive Entry and Passive Start) system, it meets these requirements. It has gradually become the mainstream choice in automobile application. The owner only needs to carry the intelligent key with him and does not need any operation to realize the opening and closing of the door and the function of starting the engine. The advantages of comfort and safety of the PEPS system make it have great promotion space. According to the complex function and security technology requirement of PEPS system, this paper adopts the system development method based on model. This development model based on model design has been gradually used in the field of automotive electronics industry. The graphic design concept is convenient for communication and maintenance, and can generate embedded code automatically, which is highly efficient and economical. It has a broad application prospect. This paper focuses on the system structure and function, the flow based on the model design, system bus simulation, test verification and so on. The following research is carried out: 1) the PEPS system is analyzed and studied, and the structure and function of the PEPS system are described in detail. This paper mainly analyzes the functions of keyless entry, keyless startup, electronic steering column lock control, alarm and prompt, and provides the control strategy basis for the realization of model-based design method. (2) the basic concept and flow chart of model-based design method are introduced. The system requirement document is written, and the controller of PEPS system is modeled hierarchically by using Simulink/Stateflow tool. The system functions are designed and realized by graphical language. And in the development process, complete the process of model checking, model verification, fixed-point design, software testing in the loop, through the optimization of code configuration, use Embedded Coder tools to automatically generate embedded code and related code reports. The working process of CAN bus in PEPS system is designed and studied. Through the bus test tool of CANoe environment, the whole network simulation environment of the system is built, and the monitoring and analysis of the system bus is realized. The CAN bus database is designed, the system interactive panel is set up, the topology structure of the system simulation is set up, the simulation program of node CAPL language is written, the signal communication is reflected graphically, and the simulation results are observed and analyzed. In order to verify the accuracy of the automatic generation of the upper layer algorithm code, the bus network simulation of the system integrates it with the underlying driver code, compiles and downloads it to the MC9S12XS128 development board, and makes the development board communicate with the bus test tool on the CAN bus. Test the correctness and reliability of the code, realize the system function, ensure the consistency of the code and function, meet the design requirements.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U463.6;TP311.52

【参考文献】