本文關(guān)鍵詞：煤氣閥自動裝配線智能控制技術(shù)研究　出處：《南京理工大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 位置控制 螺紋聯(lián)接 自動裝配技術(shù)

【摘要】：隨著自動化技術(shù)的發(fā)展,工業(yè)各領(lǐng)域?qū)τ谏a(chǎn)質(zhì)量、效率等性能指標提出更為嚴苛要求。近年來,工業(yè)4.0、制造2025等項目啟動,旨在提高制造業(yè)的智能化水平,建造現(xiàn)代化的智能工廠。在此背景下,自動裝配技術(shù)被廣泛應(yīng)用于各行業(yè)。本文以液化石油氣瓶閥自動裝配生產(chǎn)線為工程背景,研究設(shè)計煤氣閥自動裝配控制系統(tǒng)。針對生產(chǎn)線存在的傳送鏈精確定位、螺紋件可靠擰緊以及系統(tǒng)的穩(wěn)定可靠運行等問題,從以下幾個方面展開分析研究:(1)設(shè)計了模糊PID全閉環(huán)位置控制器。針對目前傳送鏈所存在的定位精度較低現(xiàn)象,提出全閉環(huán)控制方案。其中,內(nèi)環(huán)采用交流伺服系統(tǒng)以提高系統(tǒng)運行平穩(wěn)性;同時,為提高定位精度及定位效率,提出逼近、PID及模糊PID等控制方法,搭建運動系統(tǒng)模型,通過仿真結(jié)果的分析,驗證模糊PID算法的控制性能更為優(yōu)異,具有工程應(yīng)用價值。(2)螺紋件擰緊方法的研究。分析比較多種擰緊控制法,以角度控制法為基礎(chǔ),分析螺紋擰緊原理,解算擰緊角度及貼合扭力值以提供可靠的控制目標值,為擰緊控制的實現(xiàn)奠定基礎(chǔ)。同時,進一步提出分階段控制方法以提高螺紋擰緊可靠性,同時確保實現(xiàn)工件零損壞,降低半成品率。(3)控制系統(tǒng)容錯性能研究。分析長期使用下,系統(tǒng)較易出現(xiàn)的可預(yù)測故障,針對其中的單工位以及非正常性斷電等故障,提出軟件冗余容錯思想,通過相應(yīng)的軟件編程控制以提高系統(tǒng)運行的穩(wěn)定性及可操作性。(4)生產(chǎn)線控制系統(tǒng)的總體設(shè)計。結(jié)合實際需求設(shè)計控制系統(tǒng)的功能,針對功能的實現(xiàn)完成電氣選型、下位機軟件設(shè)計及監(jiān)控程序設(shè)計等工作。
[Abstract]:With the development of automation technology, various fields of industry put forward more stringent requirements for production quality, efficiency and other performance indicators. In recent years, industry 4.0, manufacturing 2025 and other projects started. In order to improve the intelligent level of manufacturing industry and build modern intelligent factory. In this context, automatic assembly technology is widely used in various industries. This paper takes the automatic assembly line of LPG cylinder valve as the engineering background. The automatic assembly control system of gas valve is studied and designed. Aiming at the problems of accurate positioning of transmission chain, reliable tightening of thread parts and stable and reliable operation of the system, etc. The fuzzy PID full closed loop position controller is designed from the following aspects. Aiming at the phenomenon of low positioning accuracy in the current transfer chain, a full closed loop control scheme is proposed. The inner ring adopts AC servo system to improve the stability of the system. At the same time, in order to improve the positioning accuracy and positioning efficiency, the approximate pid and fuzzy PID control methods are put forward, and the motion system model is built, and the simulation results are analyzed. It is verified that the fuzzy PID algorithm has better control performance and has engineering application value. Research on tightening method of thread parts. Analysis and comparison of various tightening control methods based on angle control method. The principle of screw thread tightening is analyzed, and the tightening angle and torque value are calculated to provide reliable control target value, which lays the foundation for the realization of tightening control. Further, a phased control method is proposed to improve the reliability of thread tightening, at the same time to ensure the zero damage of workpiece and reduce the rate of semi-finished product. 3) the fault-tolerant performance of the control system is studied. The system is easy to be predicted. The idea of software redundancy fault tolerance is put forward for the single station and abnormal power failure. Through the corresponding software programming control to improve the stability of the system operation and maneuverability. 4) the overall design of the production line control system. Combined with the actual requirements to design the control system function. In view of the realization of the function, the electrical selection, the software design of the lower computer and the design of the monitoring program are completed.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273

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