本文選題：無刷直流電動機 + 位置傳感器　； 參考：《太原理工大學(xué)》2014年碩士論文

【摘要】：本論文來源于山西省自然科學(xué)基金項目“變頻器供電時永磁同步電動機轉(zhuǎn)矩脈動的減小及優(yōu)化設(shè)計”。永磁無刷直流電機(Brushless DC Motor)是伴隨著高性能永磁材料、電力電子技術(shù)、現(xiàn)代控制理論、數(shù)字信號處理技術(shù)的發(fā)展而出現(xiàn)的一種新型的機電一體化產(chǎn)品。它具有運行效率高、適應(yīng)能力強、啟動轉(zhuǎn)矩大、調(diào)速平滑范圍廣、重量輕和體積小等優(yōu)點,在航空航天、家用電器、辦公自動化和交通運輸?shù)玫搅藦V泛的應(yīng)用。 本文在以TI公司生產(chǎn)的TMS320LF2407A數(shù)字信號處理器為控制器的實驗平臺,以一臺額定電壓12V,額定功率120W、4相7對極的永磁無刷直流電機(BLDCM)為控制對象,設(shè)計了一套利用霍爾位置傳感器檢測電機轉(zhuǎn)子的位置信號的永磁無刷直流電機控制系統(tǒng)。經(jīng)過反復(fù)的實驗證明控制系統(tǒng)控制效果良好,電機運行平穩(wěn),達到了預(yù)期的設(shè)計目標(biāo)。 論文主要包括四部分內(nèi)容： 1、硬件電路設(shè)計：以TI公司生產(chǎn)的DSP TMS320LF2407為控制核心器件,設(shè)計永磁無刷直流電動機控制系統(tǒng)的硬件電路,其中硬件電路主要由主回路和驅(qū)動控制電路組成。主回路主要由直流側(cè)電容、濾波、平波電抗器、限流電路以及換向電路組成；控制回路主要由DSP控制電路、通訊電路、模擬量和數(shù)字量輸入輸出電路、位置信號檢測電路、光耦隔離電路、驅(qū)動控制電路、電流采樣電路以及保護電路組成。 2、軟件程序設(shè)計：利用C語言和匯編語言編寫控制程序；程序主要由轉(zhuǎn)子位置信號捕獲中斷子程序、電流A/D轉(zhuǎn)換子程序、電流和轉(zhuǎn)速調(diào)節(jié)子程序、系統(tǒng)功率保護中斷子程序組成。 3、實驗調(diào)試：在CCS環(huán)境里面對程序進行調(diào)試,然后硬件和軟件聯(lián)合調(diào)試,通過反復(fù)的實驗不斷地完善電機的控制系統(tǒng)。 4、轉(zhuǎn)矩脈動減小的研究：本文采用兩種方式減小電機的轉(zhuǎn)矩脈動；首先從電機本體出發(fā),運用遺傳算法,在Visual Basic6.0環(huán)境中,編寫了適用于永磁無刷直流電機減小轉(zhuǎn)矩脈動的優(yōu)化設(shè)計程序；并對優(yōu)化前后永磁無刷直流電機的數(shù)據(jù)進行對比。然后,選取最適宜本文的脈寬調(diào)制技術(shù),通過改變占空比來比較轉(zhuǎn)矩脈動。
[Abstract]:This paper comes from Shanxi Natural Science Foundation project, "torque ripple reduction and Optimization Design of permanent Magnet synchronous Motor (PMSM) with Inverter Power supply". Brushless DC Motor (BLDC) is a new kind of electromechanical integration product with the development of high performance permanent magnet materials, power electronics technology, modern control theory and digital signal processing technology. It has the advantages of high running efficiency, strong adaptability, large starting torque, wide speed regulation smooth range, light weight and small volume. It has been widely used in aerospace, home appliances, office automation and transportation. In this paper, the TMS320LF2407A digital signal processor produced by TI is used as the experimental platform, and a permanent magnet brushless DC motor with rated voltage 12 V and rated power 120 W / 4 phase 7 is used as the control object. A permanent magnet brushless DC motor control system using Hall position sensor to detect rotor position signal is designed. After repeated experiments, it is proved that the control system has a good control effect and the motor runs smoothly, and achieves the expected design goal. The thesis mainly includes four parts: 1. Hardware circuit design: the hardware circuit of permanent magnet brushless DC motor control system is designed based on DSP TMS320LF2407 produced by TI company. The hardware circuit is mainly composed of main circuit and drive control circuit. The main circuit is composed of DC side capacitance, filter, flat-wave reactor, current limiting circuit and commutation circuit. The control circuit is mainly composed of DSP control circuit, communication circuit, analog and digital input and output circuit, position signal detection circuit. Optocoupler isolation circuit, drive control circuit, current sampling circuit and protection circuit. 2. Software programming: C language and assembly language are used to write control program, the program is mainly captured interrupt subroutine by rotor position signal, current A / D conversion subroutine, current and speed adjusting subroutine, System power protection interrupt subroutine composition. 3. Experimental debugging: debugging the program in CCS environment, then debugging the hardware and software, and perfecting the control system of the motor through repeated experiments. 4. The research of torque ripple reduction: this paper adopts two ways to reduce the torque ripple of the motor. Firstly, starting from the motor body, using genetic algorithm, in Visual Basic6.0 environment, An optimization design program for reducing torque ripple of permanent magnet brushless DC motor is developed, and the data of permanent magnet brushless DC motor before and after optimization are compared. Then, the pulse width modulation technology, which is the most suitable for this paper, is chosen to compare torque ripple by changing duty cycle.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM33

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