基于VeriStand的发动机硬件在环测试系统研究-机械工程专业论文.docxVIP

Dissertation Submitted to Hebei University of Technology for The Master Degree of Mechanical Engineering THE RESEARCH OF ENGINE HARDWARE IN THE LOOP TEST SYSTEM BASED ON VERISTAND by Guo Kai Supervisor: Prof. Qu Yunxia Prof. Zhang Minglu April 2015 河北工业大学硕士学位论文 摘 要 随着汽车排放法规的颁布和节能减排要求的提高，对汽车发动机电控系统提出了 更高的要求。发动机的动力性、燃油经济性等要求的提升，增加了发动机控制器的研 发难度。开发针对发动机控制器的硬件在环自动化测试系统是发动机电控技术发展的 必然趋势。硬件在环测试作为控制器 V 型开发模式中的关键环节，是提高汽车发动机 控制器开发工作效率和降低成本的有效方式。 主要研究内容和成果如下： 1. 研究了国内外硬件在环测试系统方案，采用模块化设计思路构建了一种以 NI VeriStand 为核心的具有通用性和扩展性的测试系统，并论证了该测试系统的可行性。 2. 通过对发动机工作原理和数学模型的研究，建立了基于平均值建模思想的发动 机数学模型，并通过数学建模软件 Simulink 对该模型进项仿真验证。 3. 使用 NI VeriStand 软件，采用配置的开发方法集成 NI 的开放性软硬件平台组 建了测试系统，并利用图形化编程语言设计了人机界面，完成成了自动化测试软件系 统开发。 4. 基于该实时仿真测试系统进行实验研究，调试了系统性能并进行了功能验证。 针对实车发动机控制器进行测试，验证了系统方案合理可行。 关键字：电控单元, 发动机模型, VeriStand, 硬件在环仿真 I 基于 VeriStand 的发动机硬件在环测试系统研究 ABSTRACT As the vehicle emission regulations promulgated and the requirement for energy-saving and emission rised, the engine electronic control system is needed more for its function. In order to achieve good engine power performance and low fuel consumption which make the engine controller development more difficult. It is the inevitable trend for engine electronic control technology to develop an engine controller HIL (hardware-in-the-loop) automatic test system. HIL as a key link in the V development mode is an effective way to make the controller development work more efficiency and cost less. The main research contents and results are as follows: This paper has analyzed domestic and foreign technology of the HIL simulation platform, then adopted the modular design theory to build a kind of test system with versatile and extensible using VeriStand. The feasibility of the test system has been demonstrated. The engine working principle and mathematical model has been researched to found the dynamic mathematical model of engine based on the theory of average value. And the model has been verified using the mathematical software Simulink in this