Transient suppression in non-parametric frequency response function estimates of heat diffusion phenomena

机译：热扩散现象的非参数频率响应函数估计中的瞬态抑制

获取原文

获取原文并翻译 | 示例

页面导航

摘要
著录项
相似文献
相关主题

摘要

The modeling of heat diffusion phenomena is important to develop optimal control strategies for ground coupled heat pump systems. In order to find the best heat diffusion model, a good estimate of the non-parametric Frequency Response Function (FRF) is desired. Due to the large transients in the diffusion system, it is mandatory to take transient effects in the data into account. This paper compares two methods to suppress the transient effects. Both methods assume that the excitation signal is periodic. The first method uses time domain windowing to reduce the transient, while the second method uses the property that the influence of the transient can locally be approximated in the frequency domain by a low degree polynomial. It will be shown that the latter method reduces the variance of the transfer function estimate because it suppresses the transient more efficiently. The experimental verification is done using measurements on the heat diffusion problem in a thermally isolated bar.

机译：热扩散现象的建模对于开发地面耦合热泵系统的最佳控制策略很重要。为了找到最佳的热扩散模型，需要对非参数频率响应函数（FRF）进行良好的估算。由于扩散系统中存在较大的瞬变，因此必须考虑数据中的瞬变效应。本文比较了两种抑制瞬态效应的方法。两种方法都假定激励信号是周期性的。第一种方法使用时域加窗来减少瞬变，而第二种方法使用以下特性：可以通过低次多项式在频域中局部近似瞬变的影响。将显示出，后一种方法减小了传递函数估计的方差，因为它可以更有效地抑制瞬变。实验验证是通过对隔热条中的热扩散问题进行测量来完成的。

著录项

来源
《Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International》|2012年|p.1983- 1987|共5页
会议地点 Graz(AT)
作者
Monteyne Griet; Vandersteen Gerd; Pintelon Rik;
展开▼
作者单位

Department of ELEC, Vrije Universiteit Brussel, Brussels, Belgium;

展开▼
会议组织
原文格式 PDF
正文语种 eng
中图分类计量学;
关键词

相似文献

外文文献
中文文献
专利

1. A residual a posteriori error estimate for partition of unity finite elements for three-dimensional transient heat diffusion problems using multiple global enrichment functions [J] . International Journal for Numerical Methods in Engineering . 2020,第12期

机译：使用多个全局富集功能的三维瞬态热扩散问题的统一有限元分区的剩余后验误差估计
2. NON-PARAMETRIC ESTIMATION OF THE FREQUENCY-RESPONSE FUNCTIONS OF THE LINEAR BLOCKS OF A WIENER-HAMMERSTEIN MODEL [J] . Vandersteen G., Schoukens J., Rolain Y. Automatica . 1997,第7期

机译：Wiener-Hammerstein模型的线性块的频率响应函数的非参数估计
3. Estimating transient responses from open-loop frequency response [J] . Biernson A. George American Institute of Electrical Engineers, Part II: Applications and Industry, Transactions of the . 1956,第6期

机译：从开环频率响应估算瞬态响应
4. Transient suppression in non-parametric frequency response function estimates of heat diffusion phenomena [C] . Monteyne Griet, Vandersteen Gerd, Pintelon Rik IEEE International Instrumentation and Measurement Technology Conference . 2012

机译：非参数频率响应函数估计的瞬态抑制热扩散现象的估计
5. Transient phenomena and heat transfer characteristics of a heat-generating molten corium pool/steel structure system. [D] . Shiah, Sheau-Wen. 1991

机译：发热的熔融皮质池/钢结构系统的瞬态现象和传热特性。
6. Energy and Environment Performance of Resource-Based Cities in China: A Non-Parametric Approach for Estimating Hyperbolic Distance Function [O] . Yao Hu, Tai-Hua Yan, Feng-Wen Chen 2020

机译：中国资源型城市的能源和环境绩效：估计双曲距离函数的非参数方法
7. The oceans mediate the response of global climate to natural and anthropogenic forcings. Yet for the past 2,000 years — a key interval for understanding the present and future climate response to these forcings — global sea surface temperature changes and the underlying driving mechanisms are poorly constrained. Here we present a global synthesis of sea surface temperatures for the Common Era (ce) derived from 57 individual marine reconstructions that meet strict quality control criteria. We observe a cooling trend from 1 to 1800 ce that is robust against explicit tests for potential biases in the reconstructions. Between 801 and 1800 ce, the surface cooling trend is qualitatively consistent with an independent synthesis of terrestrial temperature reconstructions, and with a sea surface temperature composite derived from an ensemble of climate model simulations using best estimates of past external radiative forcings. Climate simulations using single and cumulative forcings suggest that the ocean surface cooling trend from 801 to 1800 ce is not primarily a response to orbital forcing but arises from a high frequency of explosive volcanism. Our results show that repeated clusters of volcanic eruptions can induce a net negative radiative forcing that results in a centennial and global scale cooling trend via a decline in mixed-layer oceanic heat content. [O] . McGregor, Helen V., Evans, Michael N., Goosse, Hugues, 2015

机译：海洋调节了全球气候对自然和人为强迫的响应。然而，在过去的2,000年中（这是了解当前和未来气候对这些强迫的响应的关键间隔），全球海表温度变化及其潜在的驱动机制受到的约束很有限。在这里，我们提出了一个共同的时期（ce）的全球海面温度的全球综合，该综合来自57个符合严格质量控制标准的海洋重建项目。我们观察到从1到1800 ce的冷却趋势，对于显式测试重建中潜在的偏倚而言，该趋势很稳健。在801至1800 ce之间，表面降温趋势在质量上与地面温度重建的独立合成以及从使用过去外部辐射强迫的最佳估计的气候模型模拟集合推导出的海面温度合成在质量上是一致的。使用单一和累积强迫的气候模拟表明，从801到1800 ce的海洋表面冷却趋势主要不是对轨道强迫的反应，而是爆炸性火山爆发的频繁发生。我们的结果表明，火山喷发的反复簇可引起净的负辐射强迫，这会导致混合层海洋热量降低而导致百年和全球规模的降温趋势。
8. Method for determining the frequency-response characteristics of an element or system from the system transient output response to a known input function [R] . Curfman, Howard J, Gardiner, Robert A 1950

机译：用于根据对已知输入函数的系统瞬态输出响应来确定元件或系统的频率响应特性的方法

Transient suppression in non-parametric frequency response function estimates of heat diffusion phenomena

摘要

著录项

相似文献

相关主题

期刊订阅