發(fā)布時(shí)間：2018-09-14 16:55

【摘要】：大型風(fēng)電葉片模具分上下兩半，它是生產(chǎn)風(fēng)電葉片的專用設(shè)備，生產(chǎn)中上半模具翻轉(zhuǎn)實(shí)現(xiàn)兩模具合并。液壓翻轉(zhuǎn)系統(tǒng)的使用改變天車(chē)翻轉(zhuǎn)模具的工況，大大提高了風(fēng)電葉片的生產(chǎn)效率。但是現(xiàn)有模具液壓翻轉(zhuǎn)系統(tǒng)的不足之處是：翻轉(zhuǎn)過(guò)程角速度不平穩(wěn)、同步性差，引起模具機(jī)構(gòu)變型，進(jìn)而導(dǎo)致所生產(chǎn)葉片質(zhì)量問(wèn)題；同時(shí)，液壓系統(tǒng)溢流節(jié)流大，效率低，系統(tǒng)發(fā)熱嚴(yán)重。因此，實(shí)現(xiàn)現(xiàn)有模具液壓翻轉(zhuǎn)的角速度平穩(wěn)、多架同步、節(jié)能是有必要的。 本文以“理論分析——模擬仿真——現(xiàn)場(chǎng)實(shí)驗(yàn)驗(yàn)證”為主線，以理想翻轉(zhuǎn)運(yùn)動(dòng)為目標(biāo)，對(duì)現(xiàn)有的翻轉(zhuǎn)機(jī)械結(jié)構(gòu)進(jìn)行運(yùn)動(dòng)學(xué)分析，得出在理想運(yùn)動(dòng)中翻轉(zhuǎn)機(jī)構(gòu)各個(gè)物理量之間的關(guān)系。結(jié)合所得的各個(gè)物理量間關(guān)系，從變頻器-異步電機(jī)驅(qū)動(dòng)出發(fā)，完成液壓翻轉(zhuǎn)系統(tǒng)的原理設(shè)計(jì)，進(jìn)而建立液壓系統(tǒng)仿真模型。 其次，本文提出變頻電機(jī)控定量泵調(diào)速方案。針對(duì)變頻電機(jī)控定量泵常用的V/f控制方式、轉(zhuǎn)差頻率控制、矢量控制等控制方法，分析比較將其各自應(yīng)用于本系統(tǒng)的優(yōu)缺點(diǎn)，得出矢量控制更適用于液壓翻轉(zhuǎn)系統(tǒng)的結(jié)論。從矢量變頻原理出發(fā)建立本設(shè)計(jì)的矢量變頻器-三相異步電動(dòng)機(jī)數(shù)學(xué)與仿真模型，在此基礎(chǔ)上提出符合工程設(shè)計(jì)的簡(jiǎn)化仿真模型，并進(jìn)行相應(yīng)的仿真工作。 最后，結(jié)合液壓系統(tǒng)仿真模型和變頻器-電機(jī)簡(jiǎn)化仿真模型，進(jìn)行單翻轉(zhuǎn)架勻速翻轉(zhuǎn)PID控制仿真分析，針對(duì)仿真結(jié)果中機(jī)構(gòu)奇異點(diǎn)抖動(dòng)的問(wèn)題，引入了模糊-PID復(fù)合控制，仿真及實(shí)驗(yàn)結(jié)果表明，，模糊-PID復(fù)合控制對(duì)于改善翻轉(zhuǎn)過(guò)程中奇異點(diǎn)抖動(dòng)現(xiàn)象更具優(yōu)勢(shì)，所以最終選擇模糊-PID復(fù)合控制。同時(shí)也對(duì)雙翻轉(zhuǎn)架同步控制進(jìn)行控制策略研究，確定了等同主從結(jié)合的策略。并提出控制策略在工程控制軟件中的實(shí)現(xiàn)方法。
[Abstract]:The mold of large wind turbine blade is divided into two parts. It is a special equipment for producing wind power blade. The use of hydraulic turning system changes the working condition of the turning die of crane and greatly improves the production efficiency of wind turbine blade. However, the shortcomings of the existing hydraulic turnover system of die are that the angular velocity is not steady and the synchronism is poor in the process of overturning, which causes the mould mechanism to change, and then leads to the quality problem of the blade produced; at the same time, the overflow of the hydraulic system has large throttling and low efficiency. The system is feverish. Therefore, it is necessary to achieve stable angular speed, synchronous and energy saving of existing die hydraulic turnover. This paper takes "theoretical analysis-simulation-field experiment verification" as the main line, takes ideal turnover motion as the target, carries on the kinematics analysis to the existing turning machine structure. The relationship between the physical quantities of the flip mechanism in the ideal motion is obtained. Based on the relationship between the various physical quantities, the principle design of hydraulic flip system is completed from the drive of inverter and asynchronous motor, and the simulation model of hydraulic system is established. Secondly, this paper puts forward the speed regulation scheme of variable-frequency motor-controlled quantitative pump. Aiming at the control methods such as V / f control mode, transposition frequency control, vector control and so on, the advantages and disadvantages of their application in this system are analyzed and compared, and the conclusion that vector control is more suitable for hydraulic flipping system is obtained. Based on the principle of vector frequency conversion, the mathematical and simulation model of vector inverter-three-phase asynchronous motor is established. On this basis, a simplified simulation model in accordance with the engineering design is proposed, and the corresponding simulation work is carried out. Finally, combining the simulation model of hydraulic system and the simplified simulation model of inverter and motor, the simulation analysis of single flipping frame uniform speed flipping PID control is carried out. Aiming at the problem of singularity point jitter of mechanism in the simulation result, the fuzzy-PID compound control is introduced. The simulation and experimental results show that the fuzzy-PID compound control has more advantages in improving the singularity jitter in the flipping process, so the fuzzy-PID compound control is chosen finally. At the same time, the control strategy of synchronous control of double flipping frame is studied, and the strategy of equivalent master-slave combination is determined. The realization method of control strategy in engineering control software is put forward.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH137.7

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王金海;;大型風(fēng)力機(jī)復(fù)合材料葉片模具開(kāi)合模翻轉(zhuǎn)裝置設(shè)計(jì)[J];玻璃鋼;2006年04期

2 胡學(xué)芝;;矢量變頻調(diào)速系統(tǒng)仿真研究[J];船電技術(shù);2008年01期

3 王立,祖龍啟,唐樹(shù)森;變頻器—三相異步電動(dòng)機(jī)調(diào)速系統(tǒng)的計(jì)算機(jī)輔助設(shè)計(jì)方法[J];大連輕工業(yè)學(xué)院學(xué)報(bào);2002年03期

4 湯杰;李志勇;;變頻調(diào)速在雙電機(jī)同步傳動(dòng)中的應(yīng)用[J];電氣傳動(dòng);2008年11期

5 梁新蘭;劉偉;王瑩;;基于MATLAB/Simulink的雙閉環(huán)SPWM變頻調(diào)速系統(tǒng)仿真[J];電氣開(kāi)關(guān);2008年06期

6 李寶印,李鳳瑞,崔士軒,吳賢材;逆變器—異步電動(dòng)機(jī)數(shù)學(xué)模型和等效結(jié)構(gòu)圖的研究[J];工程機(jī)械;1996年12期

7 李漢強(qiáng),劉玉娟,高承偉;起重機(jī)電動(dòng)機(jī)矢量變頻調(diào)速理論與實(shí)現(xiàn)[J];港口裝卸;2002年04期

8 彭勇;FD型平衡閥工作原理[J];建設(shè)機(jī)械技術(shù)與管理;2002年07期

9 彭天好,楊華勇,徐兵;變頻回轉(zhuǎn)液壓系統(tǒng)的動(dòng)態(tài)特性仿真[J];機(jī)床與液壓;2001年03期

10 李鄂民;;超越負(fù)載的液壓平衡方法[J];機(jī)床與液壓;2005年12期

相關(guān)碩士學(xué)位論文 前3條

1 張武榮;異步電機(jī)矢量控制研究[D];沈陽(yáng)工業(yè)大學(xué);2007年

2 鄧麗娜;交流異步電機(jī)變頻調(diào)速同步傳動(dòng)算法研究[D];吉林大學(xué);2008年

3 曾勝斌;船舶變頻液壓舵機(jī)智能控制技術(shù)研究[D];集美大學(xué);2010年

本文編號(hào)：2243305