Development Of Automotive ESP Software Systems Based On AUTOSAP

As electronic systems increase rapidly in automotive applications, the development ofautomotive electronics software is facing unprecedented difficulties. In order to solve thesedifficulties, people start to look for new methodology of automotive software development,and standardization is the direction. As a result of the standardized, AUTOSAR gets theattention of car companies and parts manufacturers, and has made rapid development sincethe date of birth. How to actively participate in the development of AUTOSAR standard,and promote its application in the car, is of great significance to the development of domesticautomotive electronic systems.This thesis explores the automotive software development process based on AUTOSAR.The main contents are as follows:The first chapter is the introduction, introduces the background and significance of theresearch, as well as domestic and international research status. The first chapter also givesthe primary coverage of this thesis.The second chapter introduces the concept and development tools of AUTOSARstandard. First, in order to raise awareness on AUTOSAR concept, the author details thearchitecture and its development process, laid the theoretical foundation for the developmentof ESP software based on AUTOSAR standard. Secondly, in order to facilitate theimplementation of AUTOSAR, development tools must be needed. The author demonstratesthe AUTOSAR development tool chain, and introduces part of the plant implementation.Finally, a brief introduction of dSPACE AUTOSAR tools and the SystemDesk software isgiven.The third chapter describes the establishment of ESP software architecture inSystemDesk. First, the function of the ESP software systems is analylised and the ESPsoftware components have been divided. Secondly, according to the function of eachsoftware component, the interface and internal behavior of the software component isdefinite and designed, and the whole ESP software architecture is completed. Finally, the ESP software components are exported to standard description files (XML) for follow-upsimulation study.The fourth chapter describes how to use Simulink for the functional development of theESP software components. First, a closed-loop Simulink simulation environment iscreated, including the vehicle model and driver model. Secondly, the modeling of the ESPsoftware components, such as speed estimation module is carried out in detail. The thesisuse Stateflow to model the speed estimation algorithm, and verify its function throughtypical ESP simulation conditions. Finally, the AUTOSAR software component code isgenerated by the Simulink RTW.The fifth chapter describes the closed-loop VFB simulation of the ESP software inSystemDesk. First, the thesis introduces the concept and mechanism of theVFB closed-loop simulation. Secondly, the process of integrating a Simulink model inSystemDesk simulation environment is introduced, and the AUTOSAR code of ESPsoftware components is embedded. Finally, with the offline simulation capabilities ofSystemDesk, typical operating conditions are established and the VFB simulation of the ESPsoftware architecture is carried out. Through the analysis of simulation results, the effect ofthe ESP software is obveriously.Chapter Six conclude the whole content of this thesis. And it put forward the directionand the keystone for the future.