This paper employs the Direct Finite Element Squared(DFE2)method to develop Sparse Polynomial Chaos Expansions(SPCE)models for analyzing the electromechanical properties of multiscale piezoelectric structures.By incor...This paper employs the Direct Finite Element Squared(DFE2)method to develop Sparse Polynomial Chaos Expansions(SPCE)models for analyzing the electromechanical properties of multiscale piezoelectric structures.By incorporating variations in piezoelectric and elastic constants,the DFE2 method is utilized to simulate the statistical characteristics—such as expected values and standard deviations—of electromechanical properties,including Mises stress,maximum in-plane principal strain,electric potential gradient,and electric potential,under varying parameters.This approach achieves a balance between computational efficiency and accuracy.Different SPCE models are used to investigate the influence of piezoelectric and elastic constants on multiscale piezoelectric materials.Additionally,the multiscale parameterization study investigates how microscale material properties affect the macroscopic response of these structures and materials.展开更多
基于SPCE061A的舞台灯智能控制系统.通过对功放设备输出信号进行采集和滤波,应用电子分频技术对音频信号进行分频处理,分别对频率为10~700 Hz、700 Hz^5 k Hz、5~15 k Hz的三个频段的信号进行采样和模数转换,利用SPCE061A系统对声音信...基于SPCE061A的舞台灯智能控制系统.通过对功放设备输出信号进行采集和滤波,应用电子分频技术对音频信号进行分频处理,分别对频率为10~700 Hz、700 Hz^5 k Hz、5~15 k Hz的三个频段的信号进行采样和模数转换,利用SPCE061A系统对声音信号的频率与音量进行识别和处理,实现根据音乐节奏智能控制灯光系统的功能.本控制系统主要采用了电子分频技术、自适应数据采集算法、电机渐变调速控制、外围保护电路等技术,也可以拓展实现多个舞台灯系统的智能控制,具有广阔的应用前景和实际推广价值.展开更多
基金supported by the Zhumadian 2023 Major Science and Technology Special Project(Grant No.ZMDSZDZX2023002)the Postgraduate Education Reform and Quality Improvement Project of Henan Province(Grant No.YJS2023JD52).
文摘This paper employs the Direct Finite Element Squared(DFE2)method to develop Sparse Polynomial Chaos Expansions(SPCE)models for analyzing the electromechanical properties of multiscale piezoelectric structures.By incorporating variations in piezoelectric and elastic constants,the DFE2 method is utilized to simulate the statistical characteristics—such as expected values and standard deviations—of electromechanical properties,including Mises stress,maximum in-plane principal strain,electric potential gradient,and electric potential,under varying parameters.This approach achieves a balance between computational efficiency and accuracy.Different SPCE models are used to investigate the influence of piezoelectric and elastic constants on multiscale piezoelectric materials.Additionally,the multiscale parameterization study investigates how microscale material properties affect the macroscopic response of these structures and materials.
文摘基于SPCE061A的舞台灯智能控制系统.通过对功放设备输出信号进行采集和滤波,应用电子分频技术对音频信号进行分频处理,分别对频率为10~700 Hz、700 Hz^5 k Hz、5~15 k Hz的三个频段的信号进行采样和模数转换,利用SPCE061A系统对声音信号的频率与音量进行识别和处理,实现根据音乐节奏智能控制灯光系统的功能.本控制系统主要采用了电子分频技术、自适应数据采集算法、电机渐变调速控制、外围保护电路等技术,也可以拓展实现多个舞台灯系统的智能控制,具有广阔的应用前景和实际推广价值.
