【摘要】：節(jié)能是當(dāng)今經(jīng)濟發(fā)展過程中最為熱點的話題之一,在原材料不斷上漲的今天,競爭日益激烈,降低經(jīng)濟成本是企業(yè)發(fā)展的非常關(guān)鍵的一部分。在煤炭行業(yè),帶式輸送機已經(jīng)成為主要的生產(chǎn)運輸設(shè)備。為了滿足企業(yè)的生產(chǎn)需要和擴大規(guī)模等問題,帶式輸送機在驅(qū)動電機的選擇上都會留有較大的冗余度。由于煤礦開采的不均衡性,輸送機的運量不能保持穩(wěn)定,導(dǎo)致帶式輸送機運量不足,經(jīng)常處于“大馬拉小車”的狀態(tài)。傳統(tǒng)控制系統(tǒng)中,帶式輸送機的速度一般都是固定的,從而使得帶式輸送機很多時候是低載運行甚至空載運行,降低了驅(qū)動電機做功效率,降低了電能的利用率,耗費大量電能,增加企業(yè)的生產(chǎn)成本。降低帶式輸送機的生產(chǎn)電耗已經(jīng)成為企業(yè)迫切需要解決的問題,引起了許多工程技術(shù)人員的關(guān)注。首先,從輸送帶應(yīng)力應(yīng)變的特性入手,將帶式輸送系統(tǒng)離散成有限個“質(zhì)量-彈簧-阻尼”子系統(tǒng),建立膠帶子系統(tǒng)的動力學(xué)模型。結(jié)合驅(qū)動裝置、拉緊裝置、滾筒等單元的動力學(xué)模型,建立整個輸送系統(tǒng)的動力學(xué)模型。其次,探討了帶式輸送機電氣節(jié)能方法,分析了各節(jié)能技術(shù)的原理,適用范圍及優(yōu)缺點,選擇了合適的優(yōu)化節(jié)能方法。一方面,針對于啟動過程中帶式輸送機存在的問題,提出了基于耦合補償?shù)墓β势胶夤?jié)能控制方法。另一方面,通過對帶式輸送機的阻力分析,研究了帶速與運量的合理匹配對帶式輸送機的節(jié)能效果,在此基礎(chǔ)上,提出了基于變頻調(diào)速的帶式輸送機節(jié)能控制策略。最后,設(shè)計了控制器在環(huán)的帶式輸送機半實物仿真實驗系統(tǒng)總體方案并完成了系統(tǒng)調(diào)試。在MATLAB/SIMULINK里建立帶式輸送機輸送帶的動力學(xué)力學(xué)模型和驅(qū)動電機的動力學(xué)模型；控制器采用西門子PLC300,編寫了PLC節(jié)能調(diào)速控制程序,帶式輸送機仿真模型與PLC之間采用OPC通訊協(xié)議。
[Abstract]:Energy saving is one of the most hot topics in the process of economic development. With the rising of raw materials, competition is becoming increasingly fierce, and reducing economic costs is a very key part of the development of enterprises. In the coal industry, belt conveyor has become the main production and transportation equipment. In order to meet the needs of production and expand the scale of enterprises, belt conveyors will have greater redundancy in the selection of driving motors. Because of the unbalance of coal mining, the transport capacity of conveyer can not be kept stable, which leads to the shortage of belt conveyer, which is often in the condition of "pulling small cart with big horse". In the traditional control system, the speed of the belt conveyor is generally fixed, which makes the belt conveyor run at low load or even without load, which reduces the work efficiency of the driving motor and reduces the utilization rate of the electric energy. Consume a lot of electric energy, increase the production cost of the enterprise. Reducing the production power consumption of belt conveyor has become an urgent problem to be solved by enterprises, which has attracted the attention of many engineers and technicians. Firstly, starting from the characteristics of stress and strain of conveyor belt, the belt conveying system is discretized into a limited "mass-spring-damping" subsystem, and the dynamic model of belt subsystem is established. The dynamic model of the whole conveying system is established by combining the dynamic model of the driving device, the tensioning device and the roller unit. Secondly, the paper discusses the electric energy saving method of belt conveyor, analyzes the principle, applicable range, advantages and disadvantages of each energy saving technology, and selects the appropriate optimization energy saving method. On the one hand, a power balance and energy saving control method based on coupling compensation is proposed to solve the problems of belt conveyor during startup. On the other hand, by analyzing the resistance of belt conveyor, the energy saving effect of belt conveyor with reasonable matching of belt speed and transportation capacity is studied. On the basis of this, the energy saving control strategy of belt conveyor based on frequency conversion speed regulation is put forward. Finally, the overall scheme of the hardware-in-the-loop simulation experiment system of the belt conveyor with the controller is designed and the system debugging is completed. The dynamic model of belt conveyor belt and the dynamic model of driving motor are established in MATLAB/SIMULINK. The controller uses Siemens PLC300, to write the PLC energy saving and speed regulation control program, and the OPC communication protocol is used between the simulation model of belt conveyor and PLC.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD528.1

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