基于LabVIEW的机械传动综合实验台的研究与设计
发布时间：2018-08-02 09:04
【摘要】：机械传动在目前四大类传动方式中是应用最为广泛的一种方式。随着社会的发展、科技的进步,机械传动的性能也需要提高以适应与时俱进的要求。机械传动实验台则正是一种对机械传动装置性能进行综合评测的实验平台。它能在机械传动装置或部件的设计时提供较为准确又全面的参考依据,并可以对最终产品的性能进行测试、评估和分析。掌握了这些可靠数据之后,就可以使产品的开发周期得到相应的缩短并使产品质量得到一定的提高。这种方法有利于小批量、多品种的产品开发,而且这也是一种发展趋势。因此对机械传动实验台的研究和设计具有十分重要的意义。虚拟仪器(virtual instrument)是基于计算机的仪器。而将计算机技术和仪器技术相结合正是当前仪器发展的一个重要趋势。两者的结合主要有以下两种方式:一种是使仪器具有相应的计算机功能;另一种则是使计算机具有相应的仪器功能。前一种方式最典型的例子则是智能化的仪器和含嵌入式系统的仪器。而后一种是依靠通用的计算机现有的软硬件资源来实现各种仪器功能。现在通常所说的虚拟仪器主要是指后一种。它是先通过硬件系统完成信号的采集、测量与调理,再通过计算机的相关软硬件资源实现对信号数据的运算、分析和处理,并可以把最后的处理结果以多种形式输出在作用类似于传统仪器的控制面板的计算机显示屏上,从而完成所需要的各种测量功能。目前在虚拟仪器这一领域,美国国家仪器(National Instrument,NI)公司的Lab VIEW是使用较为广泛的计算机语言。Lab VIEW(Laboratory Virtual Instrument Engineering Workbench,实验室虚拟仪器工作平台)是一种不使用传统的文本行而使用图标完成整个程序编写的图形化编程语言,又称G(Graphics)语言,同时也是一种应用程序的开发环境。使用它开发应用程序效率非常高而且易学易用,所以对于Lab VIEW的应用的研究也有其重要的意义。该文主要通过虚拟仪器技术对机械传动实验台进行研究和设计。介绍了目前典型的机械传动实验台的机械结构和其测控系统的研究现状,并对机械传动实验台的主要功能模块进行了分析和研究。然后对信号采集部分进行研究和设计,通过对传感器的信号进行预处理并得到相位差,通过数字信号处理器完成算法的实现并完成与上位机的通讯,最后在Lab VIEW中完成各种实验操作。在整个系统完成搭建好后,对该系统进行调试并通过一组机械传动实验对整个系统进行评估、检测。结果表明该文设计的机械传动综合实验台具有完成评测机械传动性能的实验能力,当然还有一些地方具有进一步完善的空间。通过对数字信号处理器结合Lab VIEW的机械传动综合实验台的研究,也探索出了一种高效的设计实时、准确的测控系统的新途径。
[Abstract]:Mechanical transmission is one of the most widely used modes in four kinds of transmission modes. With the development of society and the progress of science and technology, the performance of mechanical transmission also needs to be improved to meet the requirements of keeping pace with the times. The mechanical transmission test bench is an experimental platform for comprehensive evaluation of mechanical transmission performance. It can provide a more accurate and comprehensive reference for the design of mechanical transmission or components, and can be used to test, evaluate and analyze the performance of the final product. After mastering these reliable data, the product development cycle can be shortened and the product quality can be improved. This method is conducive to small-batch, multi-variety product development, and this is a development trend. Therefore, the research and design of mechanical transmission test bench is of great significance. Virtual instrument (virtual instrument) is a computer-based instrument. The combination of computer technology and instrument technology is an important trend of instrument development. There are two main ways to combine the two methods: one is to make the instrument have the corresponding computer function, the other is to make the computer have the corresponding instrument function. The most typical examples of the former are intelligent instruments and instruments with embedded systems. The latter is based on the existing hardware and software resources of the general computer to achieve the functions of various instruments. The virtual instrument now commonly referred to mainly refers to the latter. It completes the signal acquisition, measurement and conditioning through the hardware system, and then realizes the operation, analysis and processing of the signal data through the related software and hardware resources of the computer. The final processing results can be output in a variety of forms on the computer display screen which acts as a control panel similar to the traditional instruments, thus accomplishing all kinds of measurement functions required. In the field of virtual instruments, National instrument (NI) Lab VIEW is a widely used computer language. Lab. VIEW (Laboratory Virtual Instrument Engineering Workbench, lab virtual instrument work platform. It is a complete program written without using traditional text lines and using icons. Graphical programming language, Also known as G (Graphics), it is also an application development environment. Using it to develop applications is very efficient and easy to learn and use, so the research on the application of Lab VIEW is of great significance. This paper mainly studies and designs the mechanical transmission experiment platform by virtual instrument technology. This paper introduces the mechanical structure and the research status of the measurement and control system of the typical mechanical transmission test bench at present, and analyzes and studies the main function modules of the mechanical transmission experimental platform. Then the signal acquisition part is studied and designed. The signal of the sensor is preprocessed and the phase difference is obtained. The algorithm is realized by the digital signal processor and the communication with the host computer is completed. Finally, all kinds of experiments are carried out in Lab VIEW. After the whole system has been built, the system is debugged and evaluated by a group of mechanical transmission experiments. The results show that the experimental platform designed in this paper has the ability to test and evaluate the performance of mechanical transmission, and there is still room for further improvement. Based on the research of the digital signal processor (DSP) combined with Lab VIEW, a new way to design a real-time and accurate measurement and control system is also explored.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH132
本文编号：2158934
[Abstract]:Mechanical transmission is one of the most widely used modes in four kinds of transmission modes. With the development of society and the progress of science and technology, the performance of mechanical transmission also needs to be improved to meet the requirements of keeping pace with the times. The mechanical transmission test bench is an experimental platform for comprehensive evaluation of mechanical transmission performance. It can provide a more accurate and comprehensive reference for the design of mechanical transmission or components, and can be used to test, evaluate and analyze the performance of the final product. After mastering these reliable data, the product development cycle can be shortened and the product quality can be improved. This method is conducive to small-batch, multi-variety product development, and this is a development trend. Therefore, the research and design of mechanical transmission test bench is of great significance. Virtual instrument (virtual instrument) is a computer-based instrument. The combination of computer technology and instrument technology is an important trend of instrument development. There are two main ways to combine the two methods: one is to make the instrument have the corresponding computer function, the other is to make the computer have the corresponding instrument function. The most typical examples of the former are intelligent instruments and instruments with embedded systems. The latter is based on the existing hardware and software resources of the general computer to achieve the functions of various instruments. The virtual instrument now commonly referred to mainly refers to the latter. It completes the signal acquisition, measurement and conditioning through the hardware system, and then realizes the operation, analysis and processing of the signal data through the related software and hardware resources of the computer. The final processing results can be output in a variety of forms on the computer display screen which acts as a control panel similar to the traditional instruments, thus accomplishing all kinds of measurement functions required. In the field of virtual instruments, National instrument (NI) Lab VIEW is a widely used computer language. Lab. VIEW (Laboratory Virtual Instrument Engineering Workbench, lab virtual instrument work platform. It is a complete program written without using traditional text lines and using icons. Graphical programming language, Also known as G (Graphics), it is also an application development environment. Using it to develop applications is very efficient and easy to learn and use, so the research on the application of Lab VIEW is of great significance. This paper mainly studies and designs the mechanical transmission experiment platform by virtual instrument technology. This paper introduces the mechanical structure and the research status of the measurement and control system of the typical mechanical transmission test bench at present, and analyzes and studies the main function modules of the mechanical transmission experimental platform. Then the signal acquisition part is studied and designed. The signal of the sensor is preprocessed and the phase difference is obtained. The algorithm is realized by the digital signal processor and the communication with the host computer is completed. Finally, all kinds of experiments are carried out in Lab VIEW. After the whole system has been built, the system is debugged and evaluated by a group of mechanical transmission experiments. The results show that the experimental platform designed in this paper has the ability to test and evaluate the performance of mechanical transmission, and there is still room for further improvement. Based on the research of the digital signal processor (DSP) combined with Lab VIEW, a new way to design a real-time and accurate measurement and control system is also explored.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TH132
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