發(fā)布時間：2018-10-15 07:04

【摘要】：綜合機械化的煤礦開采方式標(biāo)志著采煤技術(shù)的進步,它是目前煤礦開采的必要手段,不僅能夠增加井下的煤礦開采產(chǎn)量,而且成功加大了產(chǎn)煤的工效,同時改善了企業(yè)的生產(chǎn)收入。刮板輸送機是煤礦生產(chǎn)中主要的機器組成部分,它與煤礦的開采效力息息相關(guān)。刮板鏈?zhǔn)枪伟遢斔蜋C的重要元件,它是彈力體,運送物料時會被拉伸,使得鏈條形成彈力變形,出現(xiàn)過松現(xiàn)象或過緊現(xiàn)象。鏈條如果很松,能使鏈輪和鏈條之間的嵌接受到損害,從而對鏈條產(chǎn)生震動或者使其脫落的影響;鏈條如果很緊,會使刮板機的運轉(zhuǎn)摩擦力加大,以致輸送能耗增加,從而導(dǎo)致設(shè)備損傷。為了防止這兩種現(xiàn)象,必須有一個刮板輸送機的鏈條張力調(diào)節(jié)裝置,確保隨時自動地調(diào)節(jié)鏈條張力。因此,論文擬采用滑模控制技術(shù),使刮板機鏈條張力獲得及時有效的自控效果。首先,建立刮板機鏈條張力控制數(shù)學(xué)模型,并且根據(jù)刮板機工程設(shè)計基本原則,查閱采煤設(shè)備工作手冊,選擇與確定控制模型中的相關(guān)參量值。然后,采用趨近律滑�？刂品椒▽崿F(xiàn)刮板輸送機鏈條張力控制,其中選用三種趨近律,即:指數(shù)趨近律、變速趨近律和組合趨近律。在利用每種趨近律的滑模控制技術(shù)控制鏈條張力時,必須設(shè)置滑模面函數(shù)以及滑�？刂坡�,并且實現(xiàn)鏈條張力的趨近律滑�？刂朴嬎銠C仿真實驗,找出三種控制中效果最佳的組合趨近律滑�？刂品椒āＭ瑫r,把該方法和常規(guī)PID控制以及模糊自適應(yīng)PID控制相比較,仿真結(jié)果證明滑�？刂圃诠伟彐湉埩刂品矫婢哂袃�(yōu)越的控制能力。最后,為了克服滑�？刂频亩墩瘳F(xiàn)象,把PID控制律和滑模控制技術(shù)結(jié)合起來,形成PID滑�？刂萍夹g(shù)實現(xiàn)刮板鏈張力的自控方案,并計算機仿真實驗證明PID滑模控制不僅抖振小,而且鏈條張力控制性能更好。
[Abstract]:The comprehensive mechanization of coal mining indicates the progress of coal mining technology. It is a necessary means of coal mining at present. It can not only increase the production of underground coal mines, but also increase the efficiency of coal production successfully. At the same time, improve the enterprise's production income. Scraper conveyor is the main machine component in coal mine production, which is closely related to the mining efficiency of coal mine. Scraper chain is an important component of scraper conveyor, it is an elastic body, when transporting materials will be stretched, resulting in elastic deformation of the chain, appear too loose or too tight phenomenon. If the chain is very loose, it can damage the connection between the sprocket and the chain, thereby causing vibration or shedding of the chain; if the chain is very tight, the friction of the scraper will be increased, resulting in an increase in the energy consumption of the conveyance. As a result, the equipment is damaged. In order to prevent these two phenomena, it is necessary to have a chain tension adjusting device of scraper conveyor to ensure that chain tension is adjusted automatically at any time. Therefore, the paper adopts sliding mode control technology to make the chain tension of scraper obtain timely and effective automatic control effect. Firstly, the mathematical model of chain tension control of scraper is established, and according to the basic principles of scraper engineering design, the working manual of coal mining equipment is consulted, and the relevant parameters in the control model are selected and determined. Then, the sliding mode control method is used to control the chain tension of scraper conveyor, in which three kinds of convergence laws are selected: exponential approach law, variable speed approach law and combined approach law. In order to control chain tension with sliding mode control technology of each approach law, the sliding mode surface function and sliding mode control law must be set, and the computer simulation experiment of sliding mode control of chain tension must be realized. To find out the most effective sliding mode control method of combined approach law among the three kinds of control. At the same time, compared with the conventional PID control and fuzzy adaptive PID control, the simulation results show that the sliding mode control has superior control ability in the tension control of scraper chain. Finally, in order to overcome the chattering phenomenon of sliding mode control, the PID control law and sliding mode control technology are combined to form the automatic control scheme of PID sliding mode control technology to realize the tension of scraper chain. The computer simulation results show that PID sliding mode control is not only chattering small. And chain tension control performance is better.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD634.2;TP273

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 龔尚福;楊娜;;基于滑模控制的刮板輸送機鏈條張力控制[J];工礦自動化;2015年02期

2 孟國營;程曉涵;;我國礦用刮板輸送機技術(shù)現(xiàn)狀及發(fā)展分析[J];煤炭工程;2014年10期

3 董立紅;;基于卡爾曼濾波的刮板輸送機張力控制系統(tǒng)[J];計算機工程與科學(xué);2013年04期

4 董立紅;趙鵬兵;;帶式輸送機拉緊裝置張力的灰色預(yù)測PID控制[J];煤炭學(xué)報;2013年02期

5 王軍霞;魏忠義;;模糊自適應(yīng)PID技術(shù)在刮板輸送機鏈條張力控制上的應(yīng)用研究[J];煤礦機械;2012年10期

6 莊嚴(yán);宋麗芬;莊勇;;刮板輸送機鏈張緊力及其控制[J];礦山機械;2012年06期

7 楊玲玲;章云;陳曉龍;;一類不確定非線性系統(tǒng)的模糊邊界層滑�？刂芠J];系統(tǒng)仿真學(xué)報;2009年22期

8 李院平;郭西進;王可安;;基于組合趨近律的模糊滑模控制[J];鄭州輕工業(yè)學(xué)院學(xué)報(自然科學(xué)版);2009年05期

9 楊剛雷;趙勇;尚海紅;;刮板輸送機伸縮機尾自動控制系統(tǒng)設(shè)計[J];煤礦機械;2009年08期

10 ;Fuzzy-immune control strategy of a hydro-viscous soft start device of a belt conveyor[J];Mining Science and Technology;2009年04期

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