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Preliminarily modeling of creep effect in electro-dynamic loudspeaker suspensions
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作者 KONG Xiaopeng ZENG Xinwu 《声学学报:英文版》 CSCD 2016年第1期18-28,共11页
The creep effect of suspensions in electro-dynamic loudspeakers was modeled based on fractional order derivatives.The fractional standard linear solid(FSLS) model was presented by substituting the Abel dashpot for New... The creep effect of suspensions in electro-dynamic loudspeakers was modeled based on fractional order derivatives.The fractional standard linear solid(FSLS) model was presented by substituting the Abel dashpot for Newton dashpot in Standard Linear Solid(SLS) model.The electrical impedance as well as the transfer function between diaphragm displacement and input voltage of the two tested midrange loudspeakers was measured by Klippel laser analyzer system,and the model parameters were identified by the least-mean-square method.By comparing the fitting results of FSLS model with the other two classical models- 4 Parameter Logarithmic model and SLS model,the results show that the FSLS model can rightly predict the frequency dependent compliance loss factor and yield higher accuracy for modeling the creep effect in loudspeaker suspensions. 展开更多
关键词 动态扬声器 蠕变效应 悬浮液 模型参数 分数阶导数 建模 电动扬声器 激光分析仪
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