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風(fēng)扇性能測試系統(tǒng)設(shè)計(jì)_學(xué)士學(xué)位論文-展示頁

2024-09-10 21:35本頁面
  

【正文】 轉(zhuǎn)速 測量方法。另一種是將轉(zhuǎn)速信號轉(zhuǎn)化為脈沖信號,然后用數(shù)字系統(tǒng)內(nèi)部的時(shí)鐘來對脈沖信號的頻率進(jìn)行測量。如測速發(fā)電機(jī)是將轉(zhuǎn)速直接轉(zhuǎn)換為電壓信號,然后測量其電壓。目前工業(yè)中測量轉(zhuǎn)速的方式主要有兩種。 題 目 風(fēng)扇性能測試檢測系統(tǒng)設(shè)計(jì) 學(xué) 院 工業(yè)制造學(xué)院 專 業(yè) 測控技術(shù)與儀器 2020 年 6 月 4 日學(xué)院學(xué)士學(xué)位論文(設(shè)計(jì)) 風(fēng)扇性能測試檢測系統(tǒng)設(shè)計(jì) 專 業(yè): 測控技術(shù)與儀器 摘要: 介紹風(fēng)扇性能測試檢測系統(tǒng)設(shè)計(jì)方案,對其軟硬件的實(shí)現(xiàn)方法進(jìn)行了介紹,該系統(tǒng)在實(shí)際工程應(yīng)用中,具有較好的穩(wěn)定性和精度。電機(jī)扇熱風(fēng)扇轉(zhuǎn)速是電動(dòng)機(jī)重要的基本狀態(tài)參數(shù),在很多運(yùn)動(dòng)系統(tǒng)的測控中,都需要 對風(fēng)扇轉(zhuǎn)速進(jìn)行測量,測量的精度直接決定測試系統(tǒng)的可行性,只有轉(zhuǎn)速的高精度檢測才能得到準(zhǔn)確的風(fēng)扇性能指數(shù)。一種是將轉(zhuǎn)速轉(zhuǎn)化為模擬信號,對模擬信號進(jìn)行測量。這種方法的缺點(diǎn)是被測信號易受電磁干擾和溫度變化的影響。這種方法的優(yōu)點(diǎn)在于抗干擾能力強(qiáng)、不受溫度變化影響、穩(wěn)定性好。目前 plc因其高可靠性已經(jīng)成為工業(yè)控制的一個(gè)重要設(shè)備。 關(guān)鍵詞: PLC;轉(zhuǎn)速測量;穩(wěn)定性;高精度 學(xué)院學(xué)士學(xué)位論文(設(shè)計(jì)) The Design of Fan Performance Testing Detection System Specialty: Measurement and Control Technology and Instrumentation Student Number: Student: Supervisor: Abstract: Fan performance testing detection system design scheme, the hardware and software implementation method are introduced, the system in practical engineering applications, has a good stability and accuracy. Motor heat fan fan speed is an important basic state of motor parameters, in a lot of movement system of measurement and control, need for fan speed measurement, the accuracy of measurement directly decide the feasibility of the test system, can only get the exact fan rotational speed high precision detection performance index. Measuring speed in the industry there are two main ways: one is the rotating speed is converted into analog signals, the analog signal is measured. Such as tachogenerator is speed directly converted to voltage signal, and then measuring the voltage. The disadvantage to this approach is the measured signal is susceptible to electromagic interference and the impact of temperature change。 Speed measurement。 Factors。 High precision 學(xué)院學(xué)士學(xué)位論文(設(shè)計(jì)) I 目 錄 緒 論 .............................................................................1 1. 整體方案 ......................................................................3 設(shè)計(jì)方案 .................................................................3 方案論證與選擇 ............................................................3 系統(tǒng)工作原理的順序分析 ....................................................4 2. 硬件設(shè)置 .......................................................................5 PLC 簡 介 ...................................................................5 PLC 連接 ...................................................................5 傳感器簡介 ................................................................6 傳感器選型 ................................................................7 人機(jī)界面基本概念 ...........................................................9 人機(jī)界面的設(shè)計(jì)原則 .......................................................10 3. 軟件設(shè)置 ......................................................................12 放大整形電路 .............................................................12 I/O 分配圖 ................................................................12 程序?qū)崿F(xiàn) .................................................................13 4. 程序 ..........................................................................15 編程軟件 .....................................................
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