磁齒輪使用永磁體在輸入軸和輸出軸之間傳遞扭矩時(shí),沒有機(jī)械接觸。磁齒輪在滿載時(shí)可達(dá)到大于99%的效率,在半載時(shí)具有比機(jī)械齒輪高得多的效率。對(duì)于具有較大轉(zhuǎn)矩的齒輪,磁齒輪具有比機(jī)械齒輪更小、更輕、成本更低的優(yōu)點(diǎn)。磁齒輪在現(xiàn)有技術(shù)條件下具有非常多的優(yōu)勢。由于運(yùn)動(dòng)部件之間沒有機(jī)械接觸,所以不存在磨損并且不需要潤滑。過載時(shí),磁性齒輪可以有效的防止卡死現(xiàn)象的出現(xiàn),并且在故障轉(zhuǎn)矩消除后,可以自動(dòng)安全重啟。磁性齒輪由兩圈永久磁體組成,兩圈之間有一調(diào)磁鐵塊。這些調(diào)磁鐵塊作為每個(gè)磁環(huán)的磁通路徑。兩側(cè)永磁體產(chǎn)生的磁場可以經(jīng)過永磁體調(diào)制出諧波磁場。本文比較了在不同調(diào)制環(huán)形狀對(duì)于減小轉(zhuǎn)矩脈動(dòng)的影響,并且利用二維非線性有限元分析方法,比較了不同情況下的轉(zhuǎn)矩脈動(dòng)特性。轉(zhuǎn)矩脈動(dòng)幅值和調(diào)磁環(huán)的形狀有關(guān),而轉(zhuǎn)矩脈動(dòng)的計(jì)算精度和有限元剖分設(shè)置有關(guān)。本文在最佳剖分的條件下,對(duì)不同調(diào)制環(huán)形狀條件下轉(zhuǎn)矩脈動(dòng)的計(jì)算結(jié)果進(jìn)行了對(duì)比分析,為減少轉(zhuǎn)矩脈動(dòng)提出了適合的調(diào)制環(huán)形狀。本文研究的磁齒輪結(jié)構(gòu)內(nèi)轉(zhuǎn)子、外轉(zhuǎn)子和調(diào)磁環(huán)組成,內(nèi)轉(zhuǎn)子采用4極,外轉(zhuǎn)子采用24極,調(diào)制環(huán)采用了八種不同形狀。通過在不同調(diào)制環(huán)結(jié)構(gòu)條件下的仿真,得到了轉(zhuǎn)矩及其脈動(dòng)可...

【文章頁數(shù)】：67 頁

【學(xué)位級(jí)別】：碩士

【文章目錄】：
摘要
ABSTRACT
NOMENCLATURE
CHAPTER 1. INTRODUCTION
    1.1 IMPORTANCE OF STUDY ON MODULATOR BLOCKS OPTIMIZATION FOR REDUCINGTORQUE RIPPLE
    1.2 RESEARCH MOTIVATION
    1.3 LITERATURE REVIEW
    1.4 RESEARCH OBJECTIVES
    1.5 METHODOLOGY FOR RESEARCH
    1.6 THESIS OUTLINE
CHAPTER 2. PHYSICAL MODEL UNDERSTANDING
    2.1 BASIC DESIGN AND EXPERIMENTAL VALUES
    2.2 COMPARED FLUX-MODULATOR SHAPES
    2.3 AIR-GAP AND FLUX DENSITY
    2.4 PERFORMANCE ANALYSIS
CHAPTER 3. ANSYS MODELING
    3.1 WORKBENCH MODEL
    3.2 THE PHYSICAL STRUCTURE OF THE GEAR
    3.3 FINITE ELEMENT ANALYSIS (FEA) AND SOFTWARE SETUP
    3.4 ANSYS TRANSIENT STRUCTURAL MESHING
CHAPTER 4. RESULTS AND ANALYZING PROCESS
    4.1 TRANSIENT ANALYSIS RESULT
    4.2 MAGNETIC FIELD DISTRIBUTION AND ANALYSIS
CHAPTER 5. COMPARISON OF COLLECTED RECORDS
    5.1 COMPARISON OF INITIAL MODEL RESULTS WITH COMPARED ONES
    5.2 COMPARISON OF MODELS IN DIFFERENT GROUPS
CHAPTER 6. CONCLUSIONS AND FUTURE WORKS
    6.1 CONCLUSIONS
    6.2 FUTURE RECOMMENDATIONS
REFERENCES
ACKNOWLEDGEMENT



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