發(fā)布時間：2018-06-29 01:52

  本文選題：無刷直流電機 + PWM　； 參考：《河北科技大學(xué)》2014年碩士論文

【摘要】：永磁無刷直流電機(Brushless DC Motor,BLDCM)是隨著電力電子技術(shù)發(fā)展而出現(xiàn)的一種新型電機。采用電子換相代替機械換相機構(gòu),既保持了直流電機運行效率高、勵磁損耗小、調(diào)速性能好的優(yōu)點,又降低了制造和維護成本。因此,對無刷直流電動機的應(yīng)用展開實用性研究是當(dāng)前的一個熱點。本論文首先回顧了BLDCM的發(fā)展過程,對國內(nèi)外BLDCM的研究現(xiàn)狀進行了概述,并對BLDCM的基本結(jié)構(gòu)、工作原理、位置傳感器等進行了詳細闡述,在此基礎(chǔ)上詳細推導(dǎo)了BLDCM的數(shù)學(xué)模型,并對各種PWM調(diào)制方式對無刷直流電動機換相轉(zhuǎn)矩脈動的影響進行分析,從而確定適當(dāng)?shù)�、合理的無刷直流電動機調(diào)速系統(tǒng)的控制策略。在上述工作的基礎(chǔ)上,采用TI公司的DSP TMS320F2812為核心設(shè)計搭建了BLDCM控制系統(tǒng),主要包括電源電路、驅(qū)動電路、逆變器、信號檢測與保護電路、光耦隔離電路及按鍵、顯示等部分。通過對無刷直流電機調(diào)速系統(tǒng)進行實際測試,結(jié)果表明,該系統(tǒng)具有響應(yīng)速度快、超調(diào)量小、性能穩(wěn)定等優(yōu)點,達到了預(yù)期目標(biāo)。最后,對整個設(shè)計方案進行了總結(jié),并對未來BLDCM調(diào)速控制系統(tǒng)的發(fā)展方向進行了展望。
[Abstract]:Brushless DC Motor BLDCM (permanent Magnet Brushless DC Motor) is a new type of motor with the development of power electronics technology. The use of electronic commutation instead of mechanical commutator not only keeps the advantages of high operating efficiency, low excitation loss and good speed regulation performance of DC motor, but also reduces the cost of manufacture and maintenance. Therefore, the practical research on the application of brushless DC motor is a hot spot at present. In this paper, the development process of BLDCM is reviewed, the research status of BLDCM at home and abroad is summarized, and the basic structure, working principle and position sensor of BLDCM are described in detail. On this basis, the mathematical model of BLDCM is deduced in detail. The effect of PWM modulation on commutation torque ripple of brushless DC motor is analyzed to determine the appropriate and reasonable control strategy of brushless DC motor speed control system. On the basis of the above work, the BLDCM control system is designed with TMS320F2812 of TI company as the core, which includes power supply circuit, drive circuit, inverter, signal detection and protection circuit, optocoupler isolation circuit, keystroke, display and so on. By testing the brushless DC motor speed regulation system, the results show that the system has the advantages of fast response speed, small overshoot and stable performance, and achieves the expected goal. Finally, the whole design scheme is summarized, and the future development direction of BLDCM speed control system is prospected.
【學(xué)位授予單位】：河北科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM33

【參考文獻】

相關(guān)期刊論文 前1條

1 張勇;程小華;;無刷直流電機轉(zhuǎn)矩脈動抑制措施研究[J];微電機;2013年07期

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本文編號：2080302