本文選題：旋轉(zhuǎn)式音圈電機(jī) + 盤式繞組��； 參考：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：音圈電機(jī)是一種結(jié)構(gòu)特殊的電磁機(jī)構(gòu)。根據(jù)其運(yùn)動(dòng)軌跡可分為直線式音圈電機(jī)和旋轉(zhuǎn)式音圈電機(jī)。由于具有響應(yīng)速度快、結(jié)構(gòu)簡單、體積小、無齒槽效應(yīng)、定位精度高等特性，音圈電機(jī)在很多場合中得到越來越廣泛的應(yīng)用。在航空航天領(lǐng)域，當(dāng)負(fù)載為有限轉(zhuǎn)角旋轉(zhuǎn)且對位置精度要求較高時(shí)，音圈電機(jī)已經(jīng)代替?zhèn)鹘y(tǒng)的力矩電機(jī)成為這類工程應(yīng)用中的主流產(chǎn)品。為了適應(yīng)某些特殊領(lǐng)域微型輕量的要求，設(shè)計(jì)時(shí)音圈電機(jī)的動(dòng)子只能在有限角度范圍內(nèi)轉(zhuǎn)動(dòng)。對于一些特殊的場合，要求旋轉(zhuǎn)部分既能連續(xù)多圈旋轉(zhuǎn)進(jìn)行掃描，又能在確定目標(biāo)范圍內(nèi)進(jìn)行小范圍精密控制，所以音圈電機(jī)的動(dòng)子部分在旋轉(zhuǎn)方向上不能有機(jī)械限制。現(xiàn)有的音圈電機(jī)結(jié)構(gòu)都不能滿足這個(gè)要求，而且目前的產(chǎn)品中都不能實(shí)現(xiàn)這個(gè)功能。 本文研制了一種特殊結(jié)構(gòu)的盤式繞組旋轉(zhuǎn)式音圈電機(jī)。首先介紹了盤式繞組旋轉(zhuǎn)式音圈電機(jī)的原理，對其結(jié)構(gòu)的特殊性進(jìn)行了分析。給出了此類電機(jī)在結(jié)構(gòu)設(shè)計(jì)時(shí)的結(jié)構(gòu)參數(shù)約束條件，推導(dǎo)了電機(jī)空載時(shí)的等效磁路。通過有限元軟件進(jìn)行了模型仿真與性能計(jì)算，給出了不同結(jié)構(gòu)參數(shù)對電機(jī)綜合性能的影響。剖析了音圈電機(jī)中：電樞反應(yīng)引起氣隙磁密畸變致使電機(jī)出力不均勻這一共性問題。給出了不同定子底座材料時(shí)的氣隙磁密、最大力矩和重量的計(jì)算結(jié)果對比，給出不同場合下選用不同定子底座材料的依據(jù)。 當(dāng)前國內(nèi)外對音圈電機(jī)中的損耗、溫度場計(jì)算、熱應(yīng)力及其熱變形分析較少。本文分析了盤式繞組旋轉(zhuǎn)式音圈電機(jī)在掃描工況下的電機(jī)損耗問題，包括定子鐵心損耗、永磁體渦流損耗、盤式繞組銅耗。指出了電機(jī)溫升的主要來源，根據(jù)溫度場常用的熱源載荷對音圈電機(jī)的溫度場進(jìn)行計(jì)算，并與熱應(yīng)力進(jìn)行耦合，分析了機(jī)構(gòu)的熱應(yīng)力和熱變形情況，指出在精密配合處的材料選取原則。 由于本文研制的音圈電機(jī)工況特殊，，文章最后對音圈電機(jī)進(jìn)行了結(jié)構(gòu)的優(yōu)化。通過S-N曲線方法對優(yōu)化結(jié)構(gòu)進(jìn)行了音圈電機(jī)的強(qiáng)度校核，分析了機(jī)構(gòu)的疲勞壽命，給出了機(jī)構(gòu)的極限屈服強(qiáng)度。最后對研制的樣機(jī)進(jìn)行了包括電氣時(shí)間常數(shù)、氣隙磁密、力矩系數(shù)等方面的實(shí)驗(yàn)。結(jié)果表明本文研制的音圈電機(jī)滿足設(shè)計(jì)要求。
[Abstract]:Voice coil motor is a special structure of electromagnetic mechanism. According to its motion track, it can be divided into linear voice coil motor and rotary voice coil motor. Because of the characteristics of fast response, simple structure, small volume, no slot effect and high positioning accuracy, voice coil motor has been more and more widely used in many situations. In the field of aerospace, when the load is rotated at a finite angle and the position accuracy is high, the voice coil motor has replaced the traditional torque motor as the mainstream product in this kind of engineering application. In order to meet the requirement of miniaturization and lightweight in some special fields, the motion of voice coil motor can only be rotated in a limited range of angles. For some special occasions, it is required that the rotating part can not only be scanned continuously in multiple cycles, but also can be controlled in a small range within the determined target range, so there can be no mechanical restriction on the rotation direction of the moving part of the voice coil motor. The existing structure of voice coil motor can not meet this requirement, and none of the current products can realize this function. In this paper, a special structure of disc winding rotary voice coil motor is developed. Firstly, the principle of disc winding rotary voice coil motor is introduced, and the particularity of its structure is analyzed. The constraint conditions of the structural parameters of this kind of motor in structural design are given, and the equivalent magnetic circuit when the motor is not loaded is deduced. The model simulation and performance calculation are carried out by finite element software, and the influence of different structure parameters on the comprehensive performance of motor is given. This paper analyzes the common problem that armature reaction leads to air gap magnetic density distortion and motor force is not uniform in voice coil motor. The calculation results of air gap magnetic density, maximum torque and weight for different stator base materials are compared, and the basis for selecting different stator base materials under different situations is given. The current calculation of loss and temperature field in voice coil motor at home and abroad is given. The analysis of thermal stress and thermal deformation is less. In this paper, the loss of rotating coil motor with disk winding under scanning condition is analyzed, including stator core loss, eddy current loss of permanent magnet and copper loss of disk winding. The main source of temperature rise of motor is pointed out. The temperature field of voice coil motor is calculated according to the heat source load commonly used in temperature field, and coupled with thermal stress, the thermal stress and thermal deformation of the mechanism are analyzed. It is pointed out that the principle of material selection at the precise matching point. Due to the special working condition of the voice coil motor developed in this paper, the structure of the voice coil motor is optimized at the end of the paper. The strength of the optimized structure is checked by S-N curve method, the fatigue life of the mechanism is analyzed, and the ultimate yield strength of the mechanism is given. Finally, experiments are carried out on the prototype, including electrical time constant, air gap magnetic density, torque coefficient and so on. The results show that the voice coil motor developed in this paper meets the design requirements.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM35

【參考文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 孫耀國;機(jī)體關(guān)鍵部位機(jī)械疲勞分析方法研究[D];浙江大學(xué);2011年

本文編號：2008548