【摘要】：針對電機驅(qū)動式角振動臺氣隙磁場不均勻和輸出大位移時波形失真大的問題,提出了一種徑向磁通磁路結(jié)構(gòu)的大位移角振動臺,對其氣隙磁場動靜態(tài)特性進行優(yōu)化分析�；诘刃Т呕瘡姸确�,在極坐標(biāo)系下建立氣隙磁感應(yīng)強度的解析表達式,通過有限元法驗證該方法的有效性,進一步分析了永磁體厚度、永磁體扇形角及氣隙厚度對靜態(tài)氣隙磁場的影響規(guī)律;通過瞬態(tài)有限元法仿真分析了0.01、0.1和1 Hz 3個頻率點上外磁環(huán)固定不動而永磁體和內(nèi)磁芯轉(zhuǎn)動的氣隙磁場動態(tài)特性,定量分析了相對運動對氣隙磁感應(yīng)強度的影響規(guī)律;將優(yōu)化后的磁路參數(shù)用于大位移角振動臺樣機中,測試結(jié)果表明,氣隙平均磁感應(yīng)強度及其分布規(guī)律和理論計算結(jié)果相吻合;研究方法對角振動臺徑向磁通磁路的理論分析與優(yōu)化設(shè)計具有重要意義。
[Abstract]:Aiming at the problems of non-uniform air-gap magnetic field and large waveform distortion of motor-driven angular vibration table, a large displacement vibration table with radial flux and magnetic circuit structure is proposed, and the dynamic and static characteristics of air-gap magnetic field are optimized and analyzed. Based on the equivalent magnetization method, the analytical expression of air gap magnetic induction intensity is established in polar coordinate system. The validity of the method is verified by finite element method, and the thickness of permanent magnet is further analyzed. The influence of fan angle and air gap thickness on static air gap magnetic field; The dynamic characteristics of air gap magnetic field with fixed external magnetic ring and rotation of permanent magnet and inner magnetic core at three frequency points (0.01, 0.1 and 1 Hz) are simulated by transient finite element method, and the influence of relative motion on air gap magnetic induction intensity is quantitatively analyzed. The optimized magnetic circuit parameters are applied to the prototype of the vibration table with large displacement angle. The test results show that the air gap average magnetic induction intensity and its distribution are in good agreement with the theoretical calculation results. The research method is of great significance to the theoretical analysis and optimal design of radial flux and magnetic circuit of angular vibrator.
【作者單位】： 中國計量大學(xué)工業(yè)與商貿(mào)計量技術(shù)研究所;浙江大學(xué)浙江省先進制造技術(shù)重點實驗室;
【基金】：國家自然科學(xué)基金(51375443) 國家重大儀器設(shè)備開發(fā)專項(2013YQ470765) 浙江省自然科學(xué)基金杰出青年基金(LR12E05001)項目資助
【分類號】：TB534.2
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本文編號：2434483