【摘要】：機(jī)械傳動(dòng)在目前四大類傳動(dòng)方式中是應(yīng)用最為廣泛的一種方式。隨著社會(huì)的發(fā)展、科技的進(jìn)步,機(jī)械傳動(dòng)的性能也需要提高以適應(yīng)與時(shí)俱進(jìn)的要求。機(jī)械傳動(dòng)實(shí)驗(yàn)臺(tái)則正是一種對機(jī)械傳動(dòng)裝置性能進(jìn)行綜合評測的實(shí)驗(yàn)平臺(tái)。它能在機(jī)械傳動(dòng)裝置或部件的設(shè)計(jì)時(shí)提供較為準(zhǔn)確又全面的參考依據(jù),并可以對最終產(chǎn)品的性能進(jìn)行測試、評估和分析。掌握了這些可靠數(shù)據(jù)之后,就可以使產(chǎn)品的開發(fā)周期得到相應(yīng)的縮短并使產(chǎn)品質(zhì)量得到一定的提高。這種方法有利于小批量、多品種的產(chǎn)品開發(fā),而且這也是一種發(fā)展趨勢。因此對機(jī)械傳動(dòng)實(shí)驗(yàn)臺(tái)的研究和設(shè)計(jì)具有十分重要的意義。虛擬儀器(virtual instrument)是基于計(jì)算機(jī)的儀器。而將計(jì)算機(jī)技術(shù)和儀器技術(shù)相結(jié)合正是當(dāng)前儀器發(fā)展的一個(gè)重要趨勢。兩者的結(jié)合主要有以下兩種方式:一種是使儀器具有相應(yīng)的計(jì)算機(jī)功能;另一種則是使計(jì)算機(jī)具有相應(yīng)的儀器功能。前一種方式最典型的例子則是智能化的儀器和含嵌入式系統(tǒng)的儀器。而后一種是依靠通用的計(jì)算機(jī)現(xiàn)有的軟硬件資源來實(shí)現(xiàn)各種儀器功能�，F(xiàn)在通常所說的虛擬儀器主要是指后一種。它是先通過硬件系統(tǒng)完成信號(hào)的采集、測量與調(diào)理,再通過計(jì)算機(jī)的相關(guān)軟硬件資源實(shí)現(xiàn)對信號(hào)數(shù)據(jù)的運(yùn)算、分析和處理,并可以把最后的處理結(jié)果以多種形式輸出在作用類似于傳統(tǒng)儀器的控制面板的計(jì)算機(jī)顯示屏上,從而完成所需要的各種測量功能。目前在虛擬儀器這一領(lǐng)域,美國國家儀器(National Instrument,NI)公司的Lab VIEW是使用較為廣泛的計(jì)算機(jī)語言。Lab VIEW(Laboratory Virtual Instrument Engineering Workbench,實(shí)驗(yàn)室虛擬儀器工作平臺(tái))是一種不使用傳統(tǒng)的文本行而使用圖標(biāo)完成整個(gè)程序編寫的圖形化編程語言,又稱G(Graphics)語言,同時(shí)也是一種應(yīng)用程序的開發(fā)環(huán)境。使用它開發(fā)應(yīng)用程序效率非常高而且易學(xué)易用,所以對于Lab VIEW的應(yīng)用的研究也有其重要的意義。該文主要通過虛擬儀器技術(shù)對機(jī)械傳動(dòng)實(shí)驗(yàn)臺(tái)進(jìn)行研究和設(shè)計(jì)。介紹了目前典型的機(jī)械傳動(dòng)實(shí)驗(yàn)臺(tái)的機(jī)械結(jié)構(gòu)和其測控系統(tǒng)的研究現(xiàn)狀,并對機(jī)械傳動(dòng)實(shí)驗(yàn)臺(tái)的主要功能模塊進(jìn)行了分析和研究。然后對信號(hào)采集部分進(jìn)行研究和設(shè)計(jì),通過對傳感器的信號(hào)進(jìn)行預(yù)處理并得到相位差,通過數(shù)字信號(hào)處理器完成算法的實(shí)現(xiàn)并完成與上位機(jī)的通訊,最后在Lab VIEW中完成各種實(shí)驗(yàn)操作。在整個(gè)系統(tǒng)完成搭建好后,對該系統(tǒng)進(jìn)行調(diào)試并通過一組機(jī)械傳動(dòng)實(shí)驗(yàn)對整個(gè)系統(tǒng)進(jìn)行評估、檢測。結(jié)果表明該文設(shè)計(jì)的機(jī)械傳動(dòng)綜合實(shí)驗(yàn)臺(tái)具有完成評測機(jī)械傳動(dòng)性能的實(shí)驗(yàn)?zāi)芰?當(dāng)然還有一些地方具有進(jìn)一步完善的空間。通過對數(shù)字信號(hào)處理器結(jié)合Lab VIEW的機(jī)械傳動(dòng)綜合實(shí)驗(yàn)臺(tái)的研究,也探索出了一種高效的設(shè)計(jì)實(shí)時(shí)、準(zhǔn)確的測控系統(tǒng)的新途徑。
[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.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TH132

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