测试任务驱动的虚拟集成测试技术研究

【作者】 田秀峰；

【导师】 刘笃喜；

【作者基本信息】 西北工业大学 ， 机械制造及自动化， 2005， 硕士

【摘要】 虚拟仪器技术的发展为现代检测技术的变革提供了重要的途径。利用虚拟仪器系统或虚拟集成测试系统开发检测系统已经成为大多数测试工程师首选的解决方案。如今的虚拟仪器系统或虚拟集成测试系统的设计软件仅针对具体的测试任务,其虚拟仪器控件可重用性和可互换性差,不适应现代大型复杂的测试任务对虚拟集成测试系统设计的要求,因此改进现有虚拟仪器系统或虚拟集成测试系统的设计方法具有重要的意义。 本文提出了虚拟集成测试系统的可互换性设计思想,即建立由测试任务驱动的虚拟集成测试平台来实现虚拟集成测试系统的设计。该平台由人机交互界面层、系统功能层和数据库支撑层三层结构组成。通过该平台,首先将复杂的测试任务合理分解为一系列子任务,然后将各个子任务与虚拟集成测试平台数据库中现有的虚拟测试仪器或虚拟测试功能模块进行匹配,根据匹配结果直接选取现成虚拟测试仪器,或者进行组装、搭建和集成,从而设计完成面向用户测试任务的虚拟集成测试系统。文章详细介绍了虚拟集成测试平台的结构框架、功能实现方法和工作流程。 结合多传感器信息融合技术的特点和虚拟测试系统的研究现状,本文提出了将多传感器信息融合技术应用到虚拟测试系统中的新思路,并在汽车轮胎安全监测虚拟测试系统的设计中运用这种方法。轮胎安全监测虚拟测试系统的软件部分采用虚拟集成测试平台来设计,最后,通过对轮胎安全监测虚拟测试系统的仿真,验证了该方法的理论可行性,为其在其他测试系统中的应用提供了思路。 本文利用虚拟集成测试平台设计了一套拉伸试验虚拟测试系统,可以改进老式拉伸试验机的工作现状,提供一种实现材料力学性能智能化测试的新途径。文章给出了拉伸试验系统的软硬件设计方案,并对试用结果作了评估。更多还原

【Abstract】 The rapid development of the virtual instrument technology provides an important approach for the advancement of modern test technology. Nowadays the design of test system by using Virtual Instrument System (VIS) or Virtual Integrated Test System (VITS) is the preferred solution. However, General VIS or VITS design method only aims at specific test object and test task, which results in developed VI modules with poor interchangeability and flexibility, and is difficult to adapt to large complicated test task. So it is of great importance to improve VIS or VITS design method.Based the advanced concept of Interchangeable Virtual Instrument (IVI), a VITS design methodology is put forward in this dissertation, that is, through virtual integrated test workbench (VITW) driven by test task, which consists of three layers, i.e. human-machine interactive layer, system function layer and data support layer, VITS that can perform user’s test task is designed and integrated. On VITW, user’s complicated test task is decomposed into a series of independent sub-tasks, and then every sub-task is matched with existing virtual test instrument or virtual test function module in VI database. All these VIs corresponding with all sub-tasks are integrated into a VITS according to rational logic sequence. The framework, function accomplishment ways and workflow of the VITW are described in particular.By analyzing the characteristics of multi-sensor information fusion and the research actuality of Virtual Test System (VTS), a new idea is proposed, that is, multi-sensor information fusion is applied in VTS that is used in the design of Tire Safety Monitoring Virtual Test System (TSMVTS). The software of TSMVTS is developed by VITW. In the end, the TSMVTS emulator is accomplished and its feasibility is validated. This idea offers a method for other test system.By the same time, a pull and press intensity virtual test system is developed on VITW, which improve the work efficiency of the old Pull and Press Intensity test machine and supply a new approach for the intelligent test of material mechanicalbehaviors. The software and hardware for pull and press intensity test system is designed and trial results evaluation is done in this dissertation.更多还原