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无记忆功放的预失真数学模型 被引量:2
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作者 侯道琪 杨正 《舰船电子对抗》 2015年第4期56-61,共6页
研究了无记忆功放的非线性特性,建立了正交基拟合模型,运用内积法求解了模型系数,进行了拟合研究和仿真。针对预失真处理,分别建立了伪记忆模型和伪记忆深化模型,运用了序贯最小二乘法,方便、高效地实现多模型中多个未知参数的求解,实... 研究了无记忆功放的非线性特性,建立了正交基拟合模型,运用内积法求解了模型系数,进行了拟合研究和仿真。针对预失真处理,分别建立了伪记忆模型和伪记忆深化模型,运用了序贯最小二乘法,方便、高效地实现多模型中多个未知参数的求解,实现了功放的输入/输出线性化,进行了拟合仿真。 展开更多
关键词 记忆功放 预失真 模型 伪记忆
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Piecewise Linear Analysis for Pseudo-elasticity of Shape Memory Alloy (SMA)
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作者 王晓东 杜晓伟 孙国钧 《Journal of Shanghai Jiaotong university(Science)》 EI 2005年第1期48-51,共4页
Based on the Brinson constitutive model of SMA, a piecewise linear model for the hysteresis loop of pseudo-elasticity is proposed and applied in the analysis of responses of an SMA-spring-mass system under initial vel... Based on the Brinson constitutive model of SMA, a piecewise linear model for the hysteresis loop of pseudo-elasticity is proposed and applied in the analysis of responses of an SMA-spring-mass system under initial velocity activation. The histories of displacement and velocity of the mass, and the response of stress of SMA are calculated with Brinson’s model and the piecewise linear model. The difference of results of the two models is not significant. The calculation with piecewise-linear model needs no iteration and is highly efficient. 展开更多
关键词 shape memory alloy(SMA) PSEUDO-ELASTICITY piecewise linear model Brinson's constitutive law
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