A new method to detect the damage of plate and shell subjected to multi - location damages is proposed 摘要提出一種適用于板殼結(jié)構(gòu)的多位置損傷診斷方法。
Our client hired us to create a configuration app that could run on one or more centrally located management machines 客戶聘請我們創(chuàng)建一個配置應(yīng)用程序,用以在一個或更多位置集中的管理機(jī)器上運(yùn)行。
The scan configuration or scanner is the simplest arrangement of relays in a switch system . as shown in figure 1 - 2 , it can be thought of as a multiple position selector switch 掃描配置或掃描儀是開關(guān)系統(tǒng)中最簡單的繼電器結(jié)構(gòu)。如圖1 - 2所示,可認(rèn)為它是一個多位置的選擇開關(guān)。
In the former , we measure the output of mutiposition within the range of 360 degrees , then get the north angle which fitting the data with minimum square error or dft 在找北方案中利用360范圍內(nèi)進(jìn)行多位置測量,然后進(jìn)行最小方差擬合或者對數(shù)據(jù)進(jìn)行數(shù)字傅里葉變換得到北向角。
Numerical example reveals that the new method can realize the multi - location damage detection of the plate and shell structure effectively , and at the same time simplify the process of the damage detection 算例表明該方法不僅可以準(zhǔn)確地完成板殼結(jié)構(gòu)的多位置損傷診斷,并且可以大大簡化整個損傷診斷的過程。
Simulation results indicate the algorithm and simulation platform were available . at the last of this thesis , some methods of optimal rotation design were discussed , four methods of optimal design were analyzed under the least square estimate 在本文的最后,討論了慣導(dǎo)平臺系統(tǒng)最優(yōu)多位置翻滾試驗設(shè)計,在最小二乘估計中,分析了四種優(yōu)化設(shè)計方法。
Theory of self - calibration of platform was enucleated . process of self - calibration of platform discussed in this thesis was given . observability of multi - position error calibration was studied , then calibrate the errors of the platform 闡明平臺誤差自標(biāo)定原理,提出本文研究的平臺系統(tǒng)自標(biāo)定過程,并研究多位置翻滾試驗下的可觀測性分析,進(jìn)行平臺誤差系數(shù)的標(biāo)定。
With the variation rate of the first mode as a signature for damage detection , it is shown that the variation rate of the first mode not only is sensitive to the damage location and the extent , but also obeys the law of superposition 取結(jié)構(gòu)的一階振型變化率作為損傷診斷標(biāo)識量,計算分析顯示該標(biāo)識量不僅對結(jié)構(gòu)的損傷位置以及損傷程度敏感,而且在多位置損傷狀態(tài)下結(jié)構(gòu)的損傷位置和損傷程度是各單位置損傷狀態(tài)下結(jié)構(gòu)的損傷位置以及損傷程度的疊加。