【摘要】：變轉(zhuǎn)速液壓技術(shù)作為一種新型的傳動(dòng)方式,它能夠減少因節(jié)流調(diào)速而損失的能量,提高系統(tǒng)的效率,隨著變頻技術(shù)的發(fā)展,可以實(shí)現(xiàn)對(duì)電機(jī)無(wú)極調(diào)速,系統(tǒng)的調(diào)速精度更高,在液壓系統(tǒng)中應(yīng)用越來(lái)越廣泛。但是變轉(zhuǎn)速調(diào)速系統(tǒng)也存在著一些問(wèn)題,為了使該技術(shù)能夠更廣泛的應(yīng)用,本文提出將PLC技術(shù),液壓控制,檢測(cè)技術(shù)和組態(tài)技術(shù)有機(jī)結(jié)合起來(lái),實(shí)現(xiàn)了變轉(zhuǎn)速液壓系統(tǒng)各個(gè)參數(shù)實(shí)時(shí)監(jiān)控和動(dòng)態(tài)顯示。 本文介紹了變轉(zhuǎn)速液壓技術(shù)國(guó)內(nèi)外研究現(xiàn)狀,在變轉(zhuǎn)速液壓系統(tǒng)傳動(dòng)原理的基礎(chǔ)上,根據(jù)系統(tǒng)要求,設(shè)計(jì)以PLC為下位機(jī)的核心控制部件,PC機(jī)作為上位機(jī)的監(jiān)控系統(tǒng)。進(jìn)行了變轉(zhuǎn)速液壓試驗(yàn)臺(tái)的硬件設(shè)計(jì)和控制系統(tǒng)的軟件設(shè)計(jì),對(duì)PLC和模擬模塊進(jìn)行了選型,對(duì)PLC和PC機(jī)的通訊進(jìn)行了設(shè)置,PLC和變轉(zhuǎn)速液壓試驗(yàn)臺(tái)傳感器的連接及數(shù)據(jù)傳輸方式進(jìn)行了設(shè)計(jì),PLC對(duì)變轉(zhuǎn)速液壓系統(tǒng)的開(kāi)關(guān)量和模擬量進(jìn)行控制,及控制系統(tǒng)在GX Developer7.0軟件下的PLC梯形圖的編寫(xiě)。本文就變轉(zhuǎn)速液壓系統(tǒng)的組態(tài)畫(huà)面進(jìn)行了設(shè)計(jì),各種變量的設(shè)置,包括變量的類型、大小、報(bào)警等參數(shù)設(shè)置,組態(tài)畫(huà)面的各個(gè)控件的繪制,組態(tài)數(shù)據(jù)庫(kù)的建立,組態(tài)軟件程序的編寫(xiě)等,實(shí)現(xiàn)了變轉(zhuǎn)速液壓實(shí)驗(yàn)臺(tái)的開(kāi)環(huán)控制。在變轉(zhuǎn)速液壓試驗(yàn)臺(tái)上進(jìn)行實(shí)驗(yàn),根據(jù)實(shí)驗(yàn)數(shù)據(jù)的分析,表明該監(jiān)控系統(tǒng)對(duì)變轉(zhuǎn)速液壓試驗(yàn)臺(tái)監(jiān)控效果良好,達(dá)到了監(jiān)控系統(tǒng)的設(shè)計(jì)。 基于PLC和組態(tài)技術(shù)的變轉(zhuǎn)速液壓系統(tǒng)具有運(yùn)行穩(wěn)定、自動(dòng)化程度高、控制方便,組態(tài)畫(huà)面能夠?qū)崟r(shí)動(dòng)態(tài)顯示液壓系統(tǒng)運(yùn)行狀態(tài)等特點(diǎn),該監(jiān)控系統(tǒng)具有較高的精度和實(shí)用性,為變轉(zhuǎn)速液壓監(jiān)控系統(tǒng)的進(jìn)一步研究提供了良好的平臺(tái)。同時(shí)根據(jù)需要,可以方便的在本監(jiān)控系統(tǒng)的基礎(chǔ)上進(jìn)行功能擴(kuò)展以適應(yīng)更廣泛的系統(tǒng)需求。
[Abstract]:As a new type of transmission, variable speed hydraulic technology can reduce the energy loss due to throttling speed regulation and improve the efficiency of the system. With the development of frequency conversion technology, it can realize electrodeless speed regulation of the motor, and the system speed regulation accuracy is higher. It is more and more widely used in hydraulic system. However, there are some problems in variable speed regulation system. In order to make the technology more widely used, this paper proposes to combine PLC technology, hydraulic control technology, detection technology and configuration technology organically. The real-time monitoring and dynamic display of the parameters of variable speed hydraulic system are realized. This paper introduces the research status of variable speed hydraulic technology at home and abroad. Based on the transmission principle of variable speed hydraulic system and according to the system requirements, this paper designs a monitoring system with PLC as the core control component of the lower computer and PC computer as the upper computer monitoring system. The hardware design and software design of the hydraulic test-bed with variable rotational speed are carried out. The PLC and the simulation module are selected, and the communication between PLC and PC is set up. The connection and data transmission mode of PLC and variable speed hydraulic test-bed sensor are designed. The switch quantity and analog quantity of variable speed hydraulic system are controlled by PLC, and the PLC trapezoid diagram of the control system under GX Developer7.0 software is compiled. In this paper, the configuration screen of the hydraulic system with variable speed is designed, and the setting of various variables, including the type, size, alarm and other parameters of the variable, the drawing of each control of the configuration screen, the establishment of configuration database, etc. Configuration software program, such as the implementation of variable speed hydraulic test bench open-loop control. The experiment was carried out on the hydraulic test rig with variable rotational speed. According to the analysis of the experimental data, it is shown that the monitoring system has a good monitoring effect on the hydraulic test rig with variable rotational speed, and the design of the monitoring system has been achieved. The variable speed hydraulic system based on PLC and configuration technology has the characteristics of stable operation, high automation, convenient control, and the configuration picture can dynamically display the running state of hydraulic system in real time. The monitoring system has high precision and practicability. It provides a good platform for further research of variable speed hydraulic monitoring system. At the same time, according to the need, we can expand the function on the basis of the monitoring system to meet the needs of the wider system.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH137

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