瞬态冲击作用下禽蛋蛋壳多维响应规律分析及其强度模型研究

Eggshell strength, which is a major characteristic of egg, is important for mechanized handling, egg edibility safety, the hatch, further processing of egg-products. In this study, the integration method of dynamics analysis and multidimensional sensing technology will be proposed for eggshell strength detection. First, the mechanism of resonant response caused by transient impact will be studied to improve the sensitivity of response signals to eggshell strength information. Second, the transmission law of vibration wave on the surface of eggshell will be clarified to build the time-space distribution model for response signals, and thus guidance to design the reconstruction filter and analyze the conduction transfer functions for different sensors. Then, we will reveal the mechanism of mutual compensation of the information expressed by eggshell strength in multidimensional response signals. Based on this, we will explore various data mining methods, including the characteristic variables extraction, information fusion on signal layer and feature layer, nonlinear model constructing. Finally, an eggshell strength prediction model will be established with a strong adaptability and high accuracy. This research can not only realize the eggshell strength detection based on transient response analysis method, but also provides a theoretical basis for the physical properties measurement for agriculture products.

蛋壳强度是禽蛋品质的重要特性之一，对于禽蛋的机械化处理、鲜蛋食用安全性、种蛋孵化及蛋制品加工等等均有重要影响。本课题拟采用动力学分析与高维传感技术相结合的方法检测蛋壳强度，探索瞬态冲击激励的共振响应机理，阐明特征信号的增强机制，提高响应信号对蛋壳强度的感知能力；揭示瞬态冲击作用下蛋壳表面振动波传导规律，构建高维响应信号的时-空分布模型，为响应信号的滤波重构、传导函数化分析提供参考；揭示高维响应信号在蛋壳强度表达上的信息融合机制，在此基础上，探索信号层和特征层角度的特征信息提取与融合，以及非线性模型构建等数据挖掘方法，建立一个自适应性强精度高的蛋壳强度预测模型。所取得成果不仅可实现采用瞬态冲击激励与响应分析的禽蛋蛋壳强度检测目标，还可为该方法在农产品物性检测方面提供理论基础。

蛋壳强度是禽蛋品质的重要特性之一，对于禽蛋的机械化处理、鲜蛋食用安全性、种蛋孵 化及蛋制品加工等等均有重要影响。本课题拟采用动力学分析与高维传感技术相结合的方法检测蛋壳强度，探索瞬态冲击激励的共振响应机理，阐明特征信号的增强机制，提高响应信号对 蛋壳强度的感知能力；揭示瞬态冲击作用下蛋壳表面振动波传导规律，构建高维响应信号的时-空分布模型，为响应信号的滤波重构、传导函数化分析提供参考；揭示高维响应信号在蛋壳 强度表达上的信息融合机制，在此基础上，探索信号层和特征层角度的特征信息提取与融合，以及非线性模型构建等数据挖掘方法，建立一个自适应性强精度高的蛋壳强度预测模型。项目的执行以禽蛋瞬态冲击的产生→瞬态冲击及动力学响应分析→瞬态冲击装置的优化→响应信号的采集与分析→蛋壳强度/裂纹检测模型分析→样机试制为主线，逐步以理论研究基础向实用化推进，所取得成果不仅可实现采用瞬态冲击激励与响应分析的禽蛋蛋壳强度检测目标，还可为该方法在农 产品物性检测方面提供理论基础。