三参数电磁能量收集装置机电耦合性能研究
发布时间：2019-03-07 15:35
【摘要】：以电磁能量收集装置作为研究对象,考虑装置机械振动部分结构形式的差异,分别建立三参数和两参数电磁能量收集装置的系统模型。通过引入无量化参数,以单频简谐激励作为环境载荷给出两类能量收集装置的位移响应和电流响应的解析表达式。分别考虑电路部分和机械振动部分各主要设计参数进行影响因素分析,对比研究了两类能量收集装置的机电耦合性能。为了更直观比较不同类型能量收集装置的能量转化性能,将输入到电路外部负载的平均电功率作为考核指标。结果表明:改变机械阻尼比和三参数系统的刚度比,可显著提升能量收集装置的机电耦合性能和能量转化特性。同时,三参数系统输入电路外部负载的平均电功率也大于两参数装置。仅改变电路部分的参数,对两类能量收集装置的影响相同;但是,通过同时调整机械阻尼比和三参数系统刚度比可增强三参数能量收集装置的能量转化效率。
[Abstract]:The system model of three-parameter and two-parameter electromagnetic energy-collecting device is set up by taking the electromagnetic energy-collecting device as the research object and taking into consideration the difference in the structural form of the mechanical vibration part of the device. The analytical expressions of the displacement response and the current response of two kinds of energy-collecting devices are given by introducing the non-quantization parameter and using the single-frequency simple harmonic excitation as the environmental load. The main design parameters of the circuit part and the mechanical vibration part are considered, and the electromechanical coupling performance of the two types of energy-collecting devices is compared. In order to compare the energy conversion performance of different types of energy collection devices more intuitively, the average electric power input to the external load of the circuit is used as the assessment index. The results show that the mechanical damping ratio and the stiffness ratio of the three-parameter system can be changed, and the electromechanical coupling performance and energy conversion characteristics of the energy-collecting device can be obviously improved. At the same time, the average electric power of the external load of the input circuit of the three-parameter system is also larger than the two-parameter device. Only the parameters of the circuit part are changed, the effects on the two types of energy collecting devices are the same, but the energy conversion efficiency of the three-parameter energy collecting device can be enhanced by simultaneously adjusting the mechanical damping ratio and the three-parameter system stiffness ratio.
【作者单位】： 北京空间飞行器总体设计部;空间智能机器人系统技术与应用北京市重点实验室;
【基金】：国家自然科学基金资助项目(51405014)
【分类号】：TH113.1
[Abstract]:The system model of three-parameter and two-parameter electromagnetic energy-collecting device is set up by taking the electromagnetic energy-collecting device as the research object and taking into consideration the difference in the structural form of the mechanical vibration part of the device. The analytical expressions of the displacement response and the current response of two kinds of energy-collecting devices are given by introducing the non-quantization parameter and using the single-frequency simple harmonic excitation as the environmental load. The main design parameters of the circuit part and the mechanical vibration part are considered, and the electromechanical coupling performance of the two types of energy-collecting devices is compared. In order to compare the energy conversion performance of different types of energy collection devices more intuitively, the average electric power input to the external load of the circuit is used as the assessment index. The results show that the mechanical damping ratio and the stiffness ratio of the three-parameter system can be changed, and the electromechanical coupling performance and energy conversion characteristics of the energy-collecting device can be obviously improved. At the same time, the average electric power of the external load of the input circuit of the three-parameter system is also larger than the two-parameter device. Only the parameters of the circuit part are changed, the effects on the two types of energy collecting devices are the same, but the energy conversion efficiency of the three-parameter energy collecting device can be enhanced by simultaneously adjusting the mechanical damping ratio and the three-parameter system stiffness ratio.
【作者单位】： 北京空间飞行器总体设计部;空间智能机器人系统技术与应用北京市重点实验室;
【基金】：国家自然科学基金资助项目(51405014)
【分类号】：TH113.1
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