本文選題：汽車起重機(jī) + 液壓系統(tǒng)��； 參考：《重慶交通大學(xué)》2012年碩士論文

【摘要】：本論文來(lái)源于重慶市科技特派員項(xiàng)目“8噸起重機(jī)液壓系統(tǒng)故障診斷專家系統(tǒng)”（CSTC2009DA001-B）。近年來(lái)隨著經(jīng)濟(jì)的高速發(fā)展，我國(guó)工程機(jī)械也在不斷進(jìn)步，汽車起重機(jī)為工程機(jī)械的一部分，為它帶來(lái)了很大的發(fā)展機(jī)遇。液壓系統(tǒng)是汽車起重機(jī)作業(yè)的關(guān)鍵部分，，液壓系統(tǒng)應(yīng)用過程中最難解決的問題是如何準(zhǔn)確、快速的排除故障或預(yù)防，因此液壓系統(tǒng)能否正常運(yùn)行將直接影響到汽車起重機(jī)械能否正常作業(yè)。這也就意味著對(duì)汽車起重機(jī)液壓系統(tǒng)故障診斷專家系統(tǒng)的研究有著非常重要的意義。 本文主要完成了一下幾方面的工作： （1）針對(duì)汽車起重機(jī)液壓系統(tǒng)的結(jié)構(gòu)特點(diǎn)確定了液壓系統(tǒng)產(chǎn)生故障的主要類型，分析了產(chǎn)生此類故障的原因，針對(duì)原因提出了故障的排除方法及改進(jìn)措施，為汽車起重機(jī)液壓系統(tǒng)故障診斷的專家系統(tǒng)知識(shí)庫(kù)建立奠定了基礎(chǔ)。 （2）提出了神經(jīng)網(wǎng)絡(luò)專家系統(tǒng)的汽車起重機(jī)液壓系統(tǒng)故障診斷專家系統(tǒng)的開發(fā)方法，設(shè)計(jì)了神經(jīng)網(wǎng)絡(luò)專家系統(tǒng)的機(jī)構(gòu)圖，通過MATLAB軟件的應(yīng)用對(duì)汽車起重機(jī)液壓系統(tǒng)故障實(shí)行了BP神經(jīng)網(wǎng)絡(luò)的故障診斷，確定了隱含節(jié)點(diǎn)數(shù)目，通過神經(jīng)訓(xùn)練曲線可得收斂的速度，并且也可得出各個(gè)節(jié)點(diǎn)層的輸入權(quán)值，最終得到診斷結(jié)果。 （3）對(duì)汽車起重機(jī)液壓系統(tǒng)故障診斷的專家系統(tǒng)中的知識(shí)庫(kù)和推理機(jī)進(jìn)行了設(shè)計(jì)。 （4）綜合以上知識(shí)庫(kù)和神經(jīng)網(wǎng)絡(luò)方法綜合應(yīng)用，應(yīng)用Visual Basic、MATLAB和Microsoft Access軟件的建立了專家系統(tǒng)，實(shí)現(xiàn)了友好人機(jī)界面，通過此系統(tǒng)用戶可以對(duì)汽車起重機(jī)液壓系統(tǒng)故障進(jìn)行查詢，及時(shí)更新知識(shí)庫(kù)內(nèi)故障信息，為汽車起重機(jī)事業(yè)的發(fā)展起著進(jìn)一步的促進(jìn)作用，也為以后的液壓系統(tǒng)設(shè)計(jì)起著良好的促進(jìn)作用。
[Abstract]:This paper comes from Chongqing Science and Technology Commissioner Project "8 ton Crane hydraulic system Fault diagnosis expert system" (CSTC2009DA001-B). In recent years, with the rapid development of economy, construction machinery in China is also making continuous progress. As a part of construction machinery, truck crane has brought great opportunities for its development. Hydraulic system is the key part of truck crane operation. The most difficult problem in the application of hydraulic system is how to correct and quickly troubleshoot or prevent. Therefore, whether the hydraulic system can run normally will directly affect the normal operation of the truck lifting machinery. This means that the study of the hydraulic system fault diagnosis expert system of truck crane is of great significance. The main works of this paper are as follows: (1) according to the structural characteristics of hydraulic system of truck crane, the main types of hydraulic system fault are determined, and the causes of this kind of failure are analyzed. The troubleshooting methods and improvement measures are put forward for the reasons. It lays a foundation for the establishment of expert system knowledge base for fault diagnosis of hydraulic system of truck crane. (2) the development method of fault diagnosis expert system for hydraulic system of truck crane based on neural network expert system is presented. The mechanism diagram of neural network expert system is designed. The BP neural network fault diagnosis is carried out on the hydraulic system of truck crane by the application of MATLAB software. The number of hidden nodes is determined, and the convergence rate can be obtained by the neural training curve. And the input weights of each node layer can also be obtained. Finally, the diagnosis results are obtained. (3) the knowledge base and inference engine in the expert system of hydraulic system fault diagnosis of truck crane are designed. (4) the application of the above knowledge base and neural network method is integrated. The expert system is established by using Visual basic MATLAB and Microsoft Access software, and the friendly man-machine interface is realized. Through this system, users can query the hydraulic system faults of truck cranes and update the fault information in the knowledge bank in time. It plays a further role in promoting the development of truck crane, and also plays a good role in the design of hydraulic system in the future.
【學(xué)位授予單位】：重慶交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH213.6;TP182

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張春華;劉偉;;基于故障樹的故障診斷專家系統(tǒng)[J];兵工自動(dòng)化;2009年11期

2 黃華;;提高工程機(jī)械液壓系統(tǒng)可靠性研究[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào);2005年S2期

3 王小明;盧志強(qiáng);;國(guó)內(nèi)外大型起重機(jī)的研究現(xiàn)狀及發(fā)展趨勢(shì)[J];機(jī)電產(chǎn)品開發(fā)與創(chuàng)新;2009年02期

4 林銳;李華;劉安漣;;船舶液壓故障診斷專家系統(tǒng)的實(shí)現(xiàn)[J];機(jī)械設(shè)計(jì)與制造;2008年04期

5 周汝勝;焦宗夏;王少萍;;液壓系統(tǒng)故障診斷技術(shù)的研究現(xiàn)狀與發(fā)展趨勢(shì)[J];機(jī)械工程學(xué)報(bào);2006年09期

6 常建娥;楊宇;;組合機(jī)床液壓系統(tǒng)故障診斷專家系統(tǒng)設(shè)計(jì)[J];機(jī)械研究與應(yīng)用;2008年02期

7 周德新;謝曉敏;;基于可拓規(guī)則的故障診斷專家系統(tǒng)推理機(jī)的研究[J];計(jì)算機(jī)測(cè)量與控制;2011年02期

8 張懷彬;潘琢金;臧潔;;基于模糊理論的飛機(jī)液壓油泵車故障診斷專家系統(tǒng)構(gòu)建[J];遼寧大學(xué)學(xué)報(bào)(自然科學(xué)版);2010年04期

9 沈永明;;持續(xù)快速發(fā)展的中國(guó)工程起重機(jī)行業(yè)[J];建筑機(jī)械;2008年01期

10 劉洪江;常嘉茂;;汽車起重機(jī)液壓系統(tǒng)故障原因分析與排除[J];農(nóng)業(yè)裝備與車輛工程;2008年06期

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