汽车发动机模拟器设计与实现.docVIP

汽车发动机模拟器的设计与实现 摘要 随着现代汽车制造业的发展，人们对汽车发动机智能化控制的要求越来越高，从而使得发动机智能控制的核心——ECU变得越来越重要。在传统的ECU研发过程中，研发人员需要将ECU在实际的汽车发动机上进行测试之后才能够出厂。这就使得ECU的开发周期长，成本高。本课题设计了一种汽车发动机的模拟器，它能够模拟汽车发动机实际工作时产生的各种信号，就相当于一台虚拟的汽车发动机。将该发动机模拟器与ECU相连，就能够测试ECU的有关性能，从而避免了将ECU装在实际发动机上进行测试的麻烦，进而缩短了ECU的开发时间，节约了开发成本。 本课题的硬件设计分为三大块，分别是核心板电路设计、液晶板电路设计和信号接口面板电路设计。在这三部分中，又包括了电源模块设计、处理器模块设计、信号发生电路模块设计、CAN通信模块设计等电路设计。软件部分包括核心板程序设计、液晶板驱动设计和CAN通信驱动设计。 本模拟器经过调试，能够很好地模拟发动机产生的各类信号，有效地协助了某ECU厂商进行新款ECU的开发。 关键词：发动机模拟器，STM32芯片，CAN通信，触摸屏，嵌入式 作者：王磊 指导老师：曲波 Design and Implementation of Automotive Engine Simulator Abstract With the development of modern auto industry,people make higher requirement for the intelligent control of automotive engine.So the core of intelligent control棗ECU is becoming more and more而 important.In the process of traditional ECU development,RD engineer need to test the ECU in the actural automotive engine before it leave factory.This research and development way makes the period of ECU development long and the cost high.This time we will design an automotive engine simulator.It can simulate all kinds of signals of the automotive engine when it is working.In other words,it is equivalent to a virtual automotive engine.Connecting the simulator with the ECU can test the performance of the ECU.The method avoids the trouble of testing ECU on actual automotive engine.It shortens the development time and development cost of ECU. The hardware design of the simulator is divided into three parts:the circuit design of the core panel,the circuit design of LCD panel,and the circuit design of signal interface panel.The three parts include the design of power module,the design of processor module,the design of signal generating circuit,the design of CAN bus communication circuit.The sofeware part includes the design of the core panel program,the design of the LCD driver program,and the design of CAN communicat