本文關鍵詞： 磁力齒輪 磁場調(diào)制 有限元分析 優(yōu)化設計　出處：《蘭州理工大學》2012年碩士論文　論文類型：學位論文

【摘要】：作為一種新型的傳動裝置，磁力齒輪主要依靠磁場的耦合來傳遞力矩和轉(zhuǎn)速，輸入和輸出之間沒有機械接觸，因此，磁性齒輪具有低噪音、高效率、便于維護、高可靠性以及過載保護等優(yōu)點。磁力齒輪傳動裝置的研究，為傳動產(chǎn)業(yè)提供了一個新的發(fā)展方向。 但是磁力齒輪轉(zhuǎn)動裝置也有其固有的缺點，轉(zhuǎn)矩密度低一直是制約磁力齒輪發(fā)展的主要因素。近年來，，由于稀土永磁體材料的出現(xiàn)，磁力齒輪的傳遞轉(zhuǎn)矩有所提高，但傳統(tǒng)徑向式磁力齒輪主要是相互靠近的一小部分永磁體磁場參與轉(zhuǎn)矩傳遞，所以永磁體的利用率低，磁力齒輪轉(zhuǎn)矩密度不高。磁場調(diào)制式同心齒輪所有的永磁體磁場都參與轉(zhuǎn)矩的傳遞，因此轉(zhuǎn)矩密度可以達到100kN.m/m3。在對該種拓撲結構磁力齒輪進行原理分析的基礎上，對外轉(zhuǎn)子改進式的磁力齒輪拓撲結構進行研究，對該種拓撲結構的磁力齒輪進行靜態(tài)磁場分析，分析外轉(zhuǎn)子結構的改變對氣隙磁場的影響，并與結構未改進時的磁力齒輪性能進行對比。找出結構改進后對磁力齒輪傳動轉(zhuǎn)矩影響較大的參數(shù)，主要有調(diào)磁環(huán)鐵心寬度、外轉(zhuǎn)子永磁體寬度和高度等，對這些參數(shù)進行計算分析，找出各參數(shù)變化對最大靜態(tài)轉(zhuǎn)矩的影響。按照排列組合的優(yōu)化方法，制定出磁力齒輪的計算方案，根據(jù)內(nèi)外轉(zhuǎn)子最大靜態(tài)轉(zhuǎn)矩、損耗和平均轉(zhuǎn)矩密度等指標確定出最優(yōu)的設計方案。然后按照不均勻氣隙設計的方法，改變內(nèi)轉(zhuǎn)子磁鋼結構，來提高外轉(zhuǎn)子氣隙中有效諧波含量。另外與蘭州電機廠合作，制作了外轉(zhuǎn)子改進型磁場調(diào)制式同心齒輪樣機，設計了磁力齒輪在空載、負載、突加負載以及過載情況下的動態(tài)特性仿真實驗，對磁力齒輪進行動態(tài)仿真研究。仿真結果驗證了磁力齒輪的動態(tài)特性，為磁力齒輪的應用研究打下了基礎。
[Abstract]:As a new type of transmission device, magnetic gears mainly rely on the coupling of magnetic field to transfer torque and speed, and there is no mechanical contact between input and output. Therefore, magnetic gears have low noise, high efficiency and easy maintenance. The research of magnetic gear transmission provides a new development direction for transmission industry. But the magnetic gear rotation device also has its inherent shortcomings, the low torque density has been the main factor restricting the development of magnetic gear. In recent years, due to the appearance of rare earth permanent magnet, the transmission torque of magnetic gear has been improved. However, the traditional radial magnetic gear is mainly a small part of the magnetic field that is close to each other and the permanent magnet takes part in the torque transfer, so the utilization ratio of the permanent magnet is low. The torque density of magnetic gear is not high. All permanent magnets of magnetic field modulation concentric gear are involved in the transmission of torque, so the torque density can reach 100 kN. m / m ~ (3). Based on the principle analysis of this kind of topological magnetic gear, In this paper, the topology of the magnetic gear with improved outer rotor is studied. The static magnetic field of the magnetic gear with this topology is analyzed, and the influence of the change of the structure of the outer rotor on the air-gap magnetic field is analyzed. And compared with the performance of magnetic gear when the structure is not improved, find out the parameters that have great influence on the torque of magnetic gear transmission after the structure improvement, such as the width of the adjusting magnetic ring iron core, the width and height of the permanent magnet of the outer rotor, etc. These parameters are calculated and analyzed to find out the influence of each parameter change on the maximum static torque. According to the optimization method of arrangement and combination, the calculation scheme of magnetic gear is worked out, according to the maximum static torque of inner and outer rotor, According to the method of non-uniform air gap design, the magnetic steel structure of the inner rotor is changed to increase the effective harmonic content in the air gap of the outer rotor. In addition, the effective harmonic content in the air gap of the outer rotor is increased by using the method of non-uniform air gap design. A prototype of the modified magnetic field modulated concentric gear with external rotor is made, and the simulation experiment of the dynamic characteristics of magnetic gear under the condition of no load, load, sudden loading and overload is designed. The dynamic simulation of magnetic gear is carried out. The simulation results verify the dynamic characteristics of magnetic gear and lay a foundation for the application of magnetic gear.
【學位授予單位】：蘭州理工大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH132.41

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