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电磁式振动能发电机寄生阻尼因数测定新方法

, PP. 119-124

Keywords: 振动能捕获,电磁式微型发电机,寄生阻尼因数,有限元分析

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Abstract:

寄生阻尼因数的确定对基于惯性耦合的谐振式振动能捕获微型发电机的模型求解、性能优化等至关重要。针对电磁式(electromagnetic,EM)振动能发电机,提出利用发电机空载时惯性质量块的阻尼自由衰减振荡过程,采用有限元分析(finiteelementanalysis,FEA)、模型数值求解来获得线圈空载电压的仿真值,将所得仿真值与实验测量结果比对,在最小均方误差(leastmeansquareerror,LMSE)准则下确定出寄生阻尼因数的新方法。结果表明,此方法是可行的,且与常规方法相比具有更好的普适性。

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