本文選題：永磁電機(jī) + 復(fù)合驅(qū)動　； 參考：《河北科技大學(xué)》2017年碩士論文

【摘要】：傳統(tǒng)的多自由度運(yùn)動電機(jī)大多采用機(jī)械軸承連接結(jié)構(gòu),在長期操作中材料的磨損可能會導(dǎo)致球面運(yùn)動變得不穩(wěn)定,對球面運(yùn)動造成阻力,引起球面機(jī)體發(fā)熱,這不僅會加速器件的老化,同時也使電機(jī)運(yùn)行性能變差且易失控,針對上述問題,本文基于多自由度運(yùn)動電機(jī)的運(yùn)動特點(diǎn),提出一種復(fù)合驅(qū)動式三自由度運(yùn)動電機(jī),該電機(jī)區(qū)別于傳統(tǒng)電機(jī)的最大特點(diǎn)是在定轉(zhuǎn)子之間注入液體油膜,這種新型結(jié)構(gòu)可有效的減小運(yùn)行中摩擦帶來的損耗,延長電機(jī)的使用壽命,提高系統(tǒng)的控制精度與工作的靈活度。本論文主要將研究工作分為兩部分,第一部分主要對本電機(jī)的電磁系統(tǒng)進(jìn)行基礎(chǔ)性地研究與分析。首先,介紹了電機(jī)的基本構(gòu)造、結(jié)構(gòu)參數(shù)及工作原理,利用ANSOFT有限元軟件對電機(jī)三維建模,用三維有限元法對電機(jī)永磁體磁場及氣隙磁密分布進(jìn)行仿真并分析;其次建立電機(jī)的轉(zhuǎn)矩模型,分析電機(jī)的大范圍自轉(zhuǎn)、偏轉(zhuǎn)轉(zhuǎn)矩及精細(xì)運(yùn)動轉(zhuǎn)矩特性,并制定本電機(jī)的通電控制策略;再利用數(shù)學(xué)方法對本電機(jī)進(jìn)行解析建模,計算出電機(jī)的磁場分布情況�；邴溈怂鬼f張量法對電機(jī)轉(zhuǎn)矩進(jìn)行建模,得出轉(zhuǎn)矩特性,將解析法和有限元法得到的計算結(jié)果進(jìn)行對比驗(yàn)證。最后通過改變電機(jī)的結(jié)構(gòu)參數(shù)研究轉(zhuǎn)子及定子線圈對電機(jī)電磁系統(tǒng)及轉(zhuǎn)矩特性造成的影響,為電機(jī)進(jìn)行結(jié)構(gòu)的優(yōu)化設(shè)計奠定了基礎(chǔ)。第二部分主要對電機(jī)本體的優(yōu)化及新結(jié)構(gòu)的探索做出具體研究。提出利用支持向量機(jī)建模的思想,建立樣本空間,采用正交試驗(yàn)設(shè)計方法,建立了該電機(jī)的支持向量機(jī)模型。選擇遺傳算法對電機(jī)結(jié)構(gòu)參數(shù)進(jìn)行優(yōu)化,給出優(yōu)化數(shù)學(xué)模型,將優(yōu)化目標(biāo)設(shè)定為電機(jī)轉(zhuǎn)矩,給出了優(yōu)化結(jié)果,并與有限元法進(jìn)行了對比驗(yàn)證。結(jié)合復(fù)合驅(qū)動方式的特點(diǎn)探索兩類新結(jié)構(gòu)電機(jī),對其進(jìn)行了基礎(chǔ)性介紹與研究,給出了氣隙磁場分布及轉(zhuǎn)矩特性。
[Abstract]:The traditional multi-degree-of-freedom motion motor mostly adopts the mechanical bearing connection structure. The wear of the material in the long-term operation may lead to the spherical motion become unstable, cause resistance to the spherical motion, cause the spherical body to heat up.This will not only accelerate the aging of the device, but also make the motor run worse and lose control easily. In view of the above problems, based on the motion characteristics of the multi-degree-of-freedom motion motor, this paper proposes a compound drive three-degree-of-freedom motion motor.The main characteristic of this motor is to inject liquid oil film between stator and rotor. This new structure can effectively reduce the loss caused by friction in operation and prolong the service life of motor.Improve the control accuracy and flexibility of the system.This paper mainly divides the research work into two parts. The first part is the basic research and analysis of the electromagnetic system of the motor.Firstly, the basic structure, structure parameters and working principle of the motor are introduced. The 3D model of the motor is built by using ANSOFT finite element software, and the magnetic field and air-gap magnetic density distribution of the permanent magnet are simulated and analyzed by using the three-dimensional finite element method.Secondly, the torque model of the motor is established, and the characteristics of the wide range rotation, deflection torque and fine motion torque of the motor are analyzed, and the electrification control strategy of the motor is worked out, and then the mathematical method is used to model the motor analytically.The magnetic field distribution of the motor is calculated.Based on the Maxwell Zhang Liang method, the torque characteristics of the motor are obtained, and the results obtained by the analytic method and the finite element method are compared and verified.Finally, the influence of rotor and stator coil on the electromagnetic system and torque characteristics of the motor is studied by changing the structural parameters of the motor, which lays a foundation for the optimum design of the motor structure.The second part mainly studies the optimization of motor body and the exploration of new structure.The idea of modeling support vector machine (SVM) is used to establish the sample space and the orthogonal design method is used to establish the support vector machine model of the motor.Genetic algorithm is selected to optimize the structural parameters of the motor, and the optimization mathematical model is given. The optimization goal is set as the torque of the motor, and the optimization results are given, and compared with the finite element method (FEM).Combined with the characteristics of compound drive mode, two kinds of new structure motors are explored, and their basic introduction and research are carried out, and the distribution of air gap magnetic field and torque characteristics are given.
【學(xué)位授予單位】：河北科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM35

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本文編號：1736745