【摘要】：三相異步電動機(jī)在各行各業(yè)的應(yīng)用需求越來越廣泛,電機(jī)在出廠前必須確保產(chǎn)品質(zhì)量,因此對電機(jī)的性能進(jìn)行嚴(yán)格的測試與分析顯得尤為重要。本文根據(jù)國標(biāo)GB/T 1032-2012《三相異步電動機(jī)試驗(yàn)方法》以及電機(jī)的測試要求,對三相異步電動機(jī)的測試與分析系統(tǒng)進(jìn)行了開發(fā)與研究。首先,參照國標(biāo)要求和各項(xiàng)電機(jī)測試標(biāo)準(zhǔn),對電機(jī)試驗(yàn)?zāi)康�、試�?yàn)步驟和試驗(yàn)計(jì)算方法進(jìn)行介紹。其次,設(shè)計(jì)了測試分析系統(tǒng)的整體結(jié)構(gòu)和通訊模式。系統(tǒng)主要分為設(shè)備層、測控層和監(jiān)控層,設(shè)備層包括試驗(yàn)電機(jī)等設(shè)備,測控層包括采集電壓、電流、轉(zhuǎn)矩等參數(shù)的設(shè)備,監(jiān)控層包括工控機(jī)和UPS不間斷電源;系統(tǒng)采用工業(yè)以太網(wǎng)和RS-485網(wǎng)絡(luò)相結(jié)合的方式實(shí)現(xiàn)通訊,詳細(xì)的說明了PLC與上位機(jī)的以太網(wǎng)通訊,以及與各儀表之間的RS-485通訊的具體實(shí)現(xiàn)方式。然后,根據(jù)系統(tǒng)的需求對硬件進(jìn)行了選型與設(shè)計(jì)。完成PLC、電參數(shù)測量儀、轉(zhuǎn)矩測量儀、溫度傳感器等硬件設(shè)備的選型,并研究了設(shè)備的參數(shù)配置、基本性能和使用方法。采用西門子S7-1200作為硬件系統(tǒng)的核心控制器,控制相關(guān)設(shè)備,采集各種儀器參數(shù),并實(shí)現(xiàn)與上位機(jī)系統(tǒng)數(shù)據(jù)通訊。最后,基于.NET平臺開發(fā)了電機(jī)測試與分析系統(tǒng),設(shè)計(jì)了系統(tǒng)總體架構(gòu),具體包括類庫設(shè)計(jì)、通訊模塊設(shè)計(jì)、數(shù)據(jù)庫模塊設(shè)計(jì)和最小二乘法模塊設(shè)計(jì);給出了電機(jī)不同試驗(yàn)數(shù)的分析數(shù)據(jù)模型,基于最小二乘法理論,以電機(jī)空載試驗(yàn)為例,對采集的電壓、電流等電機(jī)參數(shù)進(jìn)行了數(shù)據(jù)分析和曲線擬合,給出了試驗(yàn)分析結(jié)果。經(jīng)現(xiàn)場實(shí)際運(yùn)行表明,該系統(tǒng)能夠根據(jù)國標(biāo)要求,實(shí)現(xiàn)對三相異步電動機(jī)不同類型的試驗(yàn)測試、數(shù)據(jù)采集、故障報(bào)警、曲線擬合和結(jié)果分析,提高了電機(jī)測試分析的自動化水平。
[Abstract]:The application demand of three-phase asynchronous motor in various industries is more and more extensive, and the product quality must be ensured before the motor leaves the factory, so it is very important to strictly test and analyze the performance of the motor. According to the national standard GB/T 1032-2012 "Test method for Three-phase Asynchronous Motor" and the test requirements of the motor, this paper develops and studies the testing and analysis system of the three-phase asynchronous motor. Firstly, the purpose, steps and calculation method of motor test are introduced according to the national standard and the test standards. Secondly, the whole structure and communication mode of the test analysis system are designed. The system is mainly divided into equipment layer, measurement and control layer and monitoring layer. The equipment layer includes test motor and other equipment. The measurement and control layer includes equipment to collect parameters such as voltage, current, torque and so on. The monitoring layer includes industrial control computer and UPS uninterruptible power supply. The communication is realized by the combination of industrial Ethernet and RS-485 network. The Ethernet communication between PLC and host computer and the realization of RS-485 communication with each instrument are explained in detail. Then, according to the demand of the system, the hardware is selected and designed. The selection of PLC, electric parameter measuring instrument, torque measuring instrument and temperature sensor is completed, and the parameter configuration, basic performance and application method of the equipment are studied. Siemens S7-1200 is used as the core controller of the hardware system, which controls the related equipment, collects various instrument parameters, and realizes the data communication with the host computer system. Finally, based on .NET platform, the motor test and analysis system is developed, and the overall structure of the system is designed, including class library design, communication module design, database module design and least square method module design. Based on the theory of least square method, taking the no-load test of motor as an example, the data analysis and curve fitting of the collected voltage, current and other motor parameters are carried out, and the experimental results are given. The field operation shows that the system can achieve different types of test, data acquisition, fault alarm, curve fitting and result analysis of three-phase asynchronous motor according to the requirements of national standard. The automation level of motor test and analysis is improved.
【學(xué)位授予單位】：青島科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM343.2

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