本文關(guān)鍵詞：基于RBF神經(jīng)網(wǎng)絡(luò)無刷直流電機(jī)控制系統(tǒng)的基礎(chǔ)研究　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 無刷直流電機(jī) RBF神經(jīng)網(wǎng)絡(luò) MATLAB TMS320F2812

【摘要】：無刷直流電機(jī)內(nèi)部結(jié)構(gòu)采用電子換向器而非傳統(tǒng)的機(jī)械換向器,消除了一般直流電動機(jī)中因機(jī)械換向器引起的一系列如電刷磨損、電磁干擾與頻繁維修等問題。同時(shí),無刷直流電機(jī)具備調(diào)速范圍寬、扭矩大、運(yùn)轉(zhuǎn)平穩(wěn)、噪聲低等直流電動機(jī)優(yōu)點(diǎn),因此研究無刷直流電機(jī)控制系統(tǒng)意義顯得十分重要。 本文建立在對國內(nèi)外相關(guān)的文獻(xiàn)查閱研究的基礎(chǔ)上,詳細(xì)敘述了無刷直流電機(jī)的相關(guān)特點(diǎn)以及發(fā)展進(jìn)程；詳細(xì)分析介紹無刷直流電機(jī)的設(shè)計(jì)本體及運(yùn)行原理；基于現(xiàn)有無位置傳感器的檢測技術(shù)有著應(yīng)用場合的限制等缺點(diǎn),本文無刷直流電機(jī)轉(zhuǎn)子位置采用位置傳感器來檢測。在現(xiàn)實(shí)中對電機(jī)的轉(zhuǎn)速進(jìn)行控制時(shí),被控對象的參數(shù)是經(jīng)常變化的,具有不確定性,這就需要相應(yīng)的調(diào)節(jié)其參數(shù)值,但傳統(tǒng)的PID方法有很多缺點(diǎn),不具有自動調(diào)節(jié)相應(yīng)參數(shù)的能力,所以本文設(shè)計(jì)了一種徑向基神經(jīng)網(wǎng)絡(luò)的PID控制算法來彌補(bǔ)傳統(tǒng)方法的不足。并且利用在MATLAB軟件,在其中搭建無刷直流電機(jī)的控制系統(tǒng)的模型,并對電機(jī)的電流、轉(zhuǎn)速、轉(zhuǎn)矩進(jìn)行仿真分析,從而證明了本文所提控制方法的精準(zhǔn)性以及實(shí)施性。本文所采用的調(diào)速控制系統(tǒng)是雙閉環(huán)調(diào)速控制系統(tǒng)。該系統(tǒng)由電流環(huán)和速度環(huán)構(gòu)成,電流環(huán)(內(nèi)環(huán)調(diào)節(jié))實(shí)現(xiàn)了快速抑制負(fù)載電流和電壓等擾動,提高了系統(tǒng)抗干擾力的能力；速度環(huán)(外環(huán)調(diào)節(jié))實(shí)現(xiàn)了保持轉(zhuǎn)速與給定無靜差,提高了系統(tǒng)的穩(wěn)定性。 本文設(shè)計(jì)了基于TMS320F2812無刷直流電機(jī)控制系統(tǒng),并且詳細(xì)介紹了系統(tǒng)的軟件與硬件部分。通過實(shí)驗(yàn)證明,本文設(shè)計(jì)的無刷直流電機(jī)控制系統(tǒng)有著一系列優(yōu)點(diǎn),諸如結(jié)構(gòu)簡單,適應(yīng)性強(qiáng)等,其應(yīng)用前景也十分寬廣。
[Abstract]:The internal structure of brushless DC motor adopts electronic commutator instead of traditional mechanical commutator which eliminates a series of wear caused by mechanical commutator in general DC motor. At the same time, brushless DC motor has the advantages of wide speed range, large torque, stable operation and low noise. So it is very important to study the brushless DC motor control system. In this paper, based on the literature review and research at home and abroad, the characteristics and development process of brushless DC motor are described in detail. This paper introduces the design and operation principle of brushless DC motor in detail. Based on the shortcomings of the existing sensorless detection technology, the rotor position of brushless DC motor is detected by position sensor in this paper. In reality, the rotor speed of brushless DC motor is controlled. The parameters of the controlled object change frequently and have uncertainty, which requires the corresponding adjustment of the parameter value. However, the traditional PID method has many shortcomings and does not have the ability to adjust the corresponding parameters automatically. So this paper designs a radial basis function neural network PID control algorithm to make up for the shortcomings of the traditional methods, and use the MATLAB software to build the brushless DC motor control system model. The current, speed and torque of the motor are simulated and analyzed. It is proved that the proposed control method is accurate and practical. The speed control system used in this paper is a double closed loop speed regulation control system. The system is composed of current loop and speed loop. The current loop (inner loop regulation) realizes fast suppression of load current and voltage disturbance, and improves the ability of anti-interference of the system. The speed loop (external ring regulation) realizes the stability of the system by keeping the rotational speed and no static error given. This paper designs a brushless DC motor control system based on TMS320F2812, and introduces the software and hardware of the system in detail. The brushless DC motor control system designed in this paper has a series of advantages, such as simple structure, strong adaptability and so on.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM33;TP183

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本文編號：1439895