本文選題：大缸徑液壓缸裝缸機 + 電液位置伺服控制系統(tǒng)　； 參考：《東北大學(xué)》2011年碩士論文

【摘要】：隨著工程機械行業(yè)的發(fā)展,液壓系統(tǒng)中作為執(zhí)行元件的液壓缸產(chǎn)品種類不斷更新,產(chǎn)品數(shù)量日益增加,原有液壓缸裝配設(shè)備和裝配方式遠不能滿足現(xiàn)有生產(chǎn)任務(wù)的要求。在大缸徑液壓缸裝配過程中,液壓缸缸筒和活塞桿組件的中心線快速對中是保證液壓缸密封性能、產(chǎn)品裝配質(zhì)量和產(chǎn)品生產(chǎn)效率的關(guān)鍵點,同時也是難點。 依據(jù)大缸徑液壓缸的裝配要求和現(xiàn)有工業(yè)領(lǐng)域中液壓缸裝配設(shè)備的發(fā)展現(xiàn)狀,對現(xiàn)有大缸徑液壓裝缸機進行結(jié)構(gòu)上的略微改動,改進支撐部分的支撐方式,采用大型、坡度較緩的V型鐵作為支撐裝置,借用自身重力和鋼絲繩棘輪張緊器綁定其缸筒不在X方向上發(fā)生偏移,在Y方向采用自定心夾緊機構(gòu)保證缸筒和活塞桿組件的中心線對中。本文重點是設(shè)計電液位置伺服調(diào)整裝置,在Z方向上采用電液位置伺服控制系統(tǒng)進行跟蹤模擬,進行液壓元件選型,計算傳遞函數(shù)同時建立數(shù)學(xué)仿真模型,設(shè)計PID控制器,以便更快速、準確地調(diào)整被控液壓缸的位置,使待裝配的液壓缸缸筒和活塞桿組件的中心線在Z方向上迅速找正。在X方向上,采用后部推進液壓系統(tǒng)使活塞桿組件和缸筒迅速裝配。 電液位置伺服控制系統(tǒng)的研究是以電液伺服閥一液壓缸驅(qū)動裝置作為被控對象,針對系統(tǒng)時變性、非線性和不確定性建立線性的數(shù)學(xué)模型,設(shè)計常規(guī)PID控制器并運用MATLAB7.0/SIMULINK對PID控制器在系統(tǒng)阻尼比變化、加入干擾的情況下進行仿真分析,驗證PID控制器具有的靜態(tài)特性、動態(tài)特性和魯棒性,最終達到大缸徑液壓缸裝配設(shè)備的使用要求。 大缸徑液壓缸裝配設(shè)備和電液位置伺服PID控制系統(tǒng)的研究,具有較大的實際意義和理論參考價值,對實際生產(chǎn)過程中制約大缸徑液壓缸生產(chǎn)的瓶頸問題提出可信的解決方案,提高產(chǎn)品的內(nèi)在質(zhì)量和裝配生產(chǎn)效率,從而降低產(chǎn)品故障率和工人的勞動強度,減少售后服務(wù)費用,提高產(chǎn)品信譽度并增強產(chǎn)品在本行業(yè)中的核心競爭力。
[Abstract]:With the development of construction machinery industry, the types of hydraulic cylinder products in hydraulic system as executive components are constantly updated, the number of products is increasing day by day, the original assembly equipment and assembly mode of hydraulic cylinder can not meet the requirements of existing production tasks. In the process of large diameter hydraulic cylinder assembly, the centerline quick alignment between cylinder and piston rod assembly is the key point to ensure the sealing performance of hydraulic cylinder, product assembly quality and product production efficiency, at the same time, it is also a difficult point. According to the assembly requirements of large cylinder diameter hydraulic cylinder and the development status of the hydraulic cylinder assembly equipment in the existing industrial field, the structure of the existing large diameter hydraulic cylinder loader is slightly changed, and the supporting mode of the supporting part is improved. The V-type iron with lower slope is used as the supporting device, the cylinder is not offset in X direction by using its own gravity and wire rope ratchet tensioner, and the center line alignment of cylinder and piston rod assembly is ensured by self-centring clamping mechanism in Y direction. The emphasis of this paper is to design the electro-hydraulic position servo adjusting device. In Z direction, the electro-hydraulic position servo control system is used to track and simulate, to select hydraulic components, to calculate the transfer function and to establish the mathematical simulation model, and to design the PID controller. In order to adjust the position of the controlled cylinder more quickly and accurately, the centerline of the cylinder and piston rod assembly to be assembled can be corrected rapidly in Z direction. In X direction, the piston rod assembly and cylinder can be assembled rapidly by the rear propulsion hydraulic system. The research of electro-hydraulic position servo control system is to take the electro-hydraulic servo valve-hydraulic cylinder drive device as the controlled object, and to establish a linear mathematical model for the time-varying, nonlinear and uncertainty of the system. The conventional PID controller is designed and the PID controller is simulated and analyzed under the condition of system damping ratio changing and disturbance adding by MATLAB7.0/SIMULINK. The static, dynamic and robust characteristics of the PID controller are verified. Finally meet the requirements of large diameter hydraulic cylinder assembly equipment. The research of large diameter hydraulic cylinder assembly equipment and electro-hydraulic position servo PID control system is of great practical significance and theoretical reference value. Improve the internal quality of products and assembly production efficiency, so as to reduce product failure rate and labor intensity, reduce after-sales service costs, improve product credibility and enhance the core competitiveness of the product in the industry.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH137

【參考文獻】

相關(guān)期刊論文 前10條

1 彭熙偉,王渝,王向周;時變負載比例閥控馬達的精確點位控制(英文)[J];Journal of Beijing Institute of Technology(English Edition);1999年03期

2 王晶;;基于PID控制的帶式輸送機液壓拉緊系統(tǒng)[J];遼寧工程技術(shù)大學(xué)學(xué)報(自然科學(xué)版);2010年S1期

3 韓江;屈勝利;王效杰;王偉明;;伺服系統(tǒng)辨識的仿真與實現(xiàn)[J];航空計算技術(shù);2005年04期

4 周恩濤,廖生行,牟丹;電液比例閥控系統(tǒng)模糊-PID控制的研究[J];機床與液壓;2003年06期

5 袁秀平;李鶴一;方祖華;;利用模糊理論改善閥控缸電液伺服系統(tǒng)控制性能[J];機床與液壓;2007年11期

6 臧懷泉,黃鎮(zhèn)海,尹汝潑,方一鳴,裴�？�;液壓伺服系統(tǒng)建模的新方法[J];計算機仿真;2002年05期

7 黃進,葉尚輝,陳其昌;基于自調(diào)整量化因子模糊控制器的摩擦補償研究[J];機械設(shè)計與研究;1999年01期

8 李洪人,王棟梁,李春萍;非對稱缸電液伺服系統(tǒng)的靜態(tài)特性分析[J];機械工程學(xué)報;2003年02期

9 倪敬;項占琴;潘曉弘;呂福在;;管捆成形電液系統(tǒng)自學(xué)習(xí)粗糙-模糊PID控制研究[J];機械工程學(xué)報;2006年10期

10 張富喜,王俊耀;用于液壓缸密封件的密封性能分析[J];流體傳動與控制;2004年02期

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