摘要随着汽车发动机排放性能的要求越来越高，电磁驱动配气机构存在较大的研究前景，电磁气门直线运动带载状态下的静动态性能以及控制精度必须达到越来越高的水平。本文采用直线负载模拟器模拟直线运动承载对象带载时所要求的负载力特性，将全实物转变为半实物模型，节约成本，缩短研发周期。77711

    本文在搭建模拟负载台架的基础上，结合DSP设计直线负载模拟器的加载控制系统，通过实验验证控制系统的可行性。首先，在对负载模拟器的控制策略进行分析的基础之上，建立基于Matlab/Simulink的系统模型，并进行仿真研究。然后，基于TMS320F2812 DSP设计控制系统的软硬件部分。在硬件设计中，使用Altium Designer完成硬件的电路图并制作实验板；软件部分，根据控制系统的控制策略编写程序并调试。最后，对电磁气门负载控制系统进行试验，将仿真结果与试验结果进行对比，验证了控制系统包括软件设计和硬件设计的合理性。

毕业论文关键词  直线负载模拟器  仿真  PID算法  DSP

毕业设计说明书外文摘要

Title  Design the control system of the Load simulation gantry of  Elecronmagnetic Valve in the engine                                                   

Abstract With the emission performance of the engine are more and more demanding, electromagnetic valvetrain has a large prospect in study。 Meanwhile,the static and dynamic state and control accuracy in the linear motion of the electromagnic valve,which is in a load state,must reach a higher and higher level。 In this paper, we use the linear load simulator to simulate the load characteristic of bearing objects which are in a linear motion。 We replace the full-physical model with a semi-physical model to save costs and shorten cycle of the development。 

On the basis of building simulated load of the gantry,design a loading control system of the linear load simulator by using DSP。 Then verify the feasibility of the control system。 First,on the basis of the analysis on the control strategy of the load simulator,a model was created and simulated by using Matlab/Simulink,  Second,based on TMS320F2812 DSP,the software and hardware parts of control system were designed 。Use Altium Designer to complete the schematic of the hardware and make experimental board when design the hardware。 In the software part,according to the control strategy of the control system,programmed and debuged。 Finally,test the control system of the electromagnetic valve and compare the results of simulation with the results of the experiments,then verify the rationality of the control system including hardware and software。

Keywords  Linear Load Simulator  Simulation  PID algorithm  DSP

目   次

1  绪论 1

1。1  研究背景 1

1。2  研究现状 2

1。2。1  可变气门 2

1。2。2  电磁气门控制技术 4

1。2。3  直线负载模拟技术 5

2  直线负载模拟器的方案设计 7

2。1  直线负载模拟器的分类 7

2。2  电磁直线负载模拟器的结构与工作原理 7

3  电磁直线负载模拟器的系统数学模型 10

3。1  机械子系统