支持网络物理测试的实时温度场状态观测器和数字副本

IF 1.9 4区 工程技术 Q3 ENGINEERING, MECHANICAL
M. Salmeron, H. Montoya, C.E. Silva, S.J. Dyke
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引用次数: 0

摘要

网络物理测试是一类实验方法,其中将系统划分为物理和数值组件,以研究其整体行为。传输系统通常需要通过在物理部分和数字部分之间施加适当的接口条件来捕获相关的相互作用。虽然网络物理测试通常使用集总参数系统进行,但热机械网络物理测试需要使用热致动器作为传递系统,在空间分布的区域或表面上施加热条件。因此,数值和物理分量之间的相互作用具有分布式性质,即是场而不是点值。在本文中,我们开发并实验验证了温度场的状态观测器,以实现热力学网络物理测试。状态观测器仅使用离散位置的温度测量提供热致动器表面上的连续温度估计。然后利用估计的温度场来解释界面条件下的局部机械缺陷。该方法包括建立控制装置的一个部分的数字复制品。通过在数字复制品中施加缺陷,它用于生成和输出热负荷模式的响应,该响应表示具有机械缺陷的物理系统的响应。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Real-Time Temperature Field State Observer and Digital Replica to Support Cyber-Physical Testing

Cyber-physical testing is a class of experimental methods in which a system is partitioned into physical and numerical components to study its overall behavior. Transfer systems are typically needed to capture relevant interactions by enforcing appropriate interface conditions between the physical and numerical portions. While cyber-physical testing is often performed using lumped-parameter systems, thermomechanical cyber-physical testing requires the use of thermal actuators as transfer systems to apply a thermal condition over a spatially distributed region or surface. Thus, the interactions between the numerical and physical components are of a distributed nature, i.e., a field rather than point values. In this paper, we develop and experimentally validate a state observer for temperature fields to enable thermomechanical cyber-physical testing. The state observer provides continuous estimates of temperature over a surface of the thermal actuator using only temperature measurements at discrete locations. The estimated temperature field is then leveraged to account for localized mechanical defects in the interface condition. The method consists of building a digital replica of one portion of the control plant. By imposing defects in the digital replica it is used to generate and output the response of a thermal load pattern that represents that of a physical system with mechanical defects.

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来源期刊
Experimental Techniques
Experimental Techniques 工程技术-材料科学:表征与测试
CiteScore
3.50
自引率
6.20%
发文量
88
审稿时长
5.2 months
期刊介绍: Experimental Techniques is a bimonthly interdisciplinary publication of the Society for Experimental Mechanics focusing on the development, application and tutorial of experimental mechanics techniques. The purpose for Experimental Techniques is to promote pedagogical, technical and practical advancements in experimental mechanics while supporting the Society''s mission and commitment to interdisciplinary application, research and development, education, and active promotion of experimental methods to: - Increase the knowledge of physical phenomena - Further the understanding of the behavior of materials, structures, and systems - Provide the necessary physical observations necessary to improve and assess new analytical and computational approaches.
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