variable adj. 1.易變的,變化無常的,無定的 (opp. constant, steady)。 2.可變的,能變的;變換的。 3.【數(shù)學】變量的;【天文學】變光的;【生物學】變異的。 Prices are variable according to the exchanges. 物價跟著匯率變動。 a man of variable character 反復無常的人。 a rod of variable length (伸縮)如意棒。 a word of variable construction 可以作種種解釋的詞。 variable capital 可變資本。 a variable budget 臨時預算。 n. 1.易變的東西。 2.【數(shù)學】變量,變數(shù),變項,變元 (opp. constant);【天文學】變星 (=variable star);【航?!?方向不定的)變風,不定風 (opp. trade wind); 〔pl.〕 (貿(mào)易風帶中的)變風帶。 adv. -ably ,-ness n.
Multi - dimension data is transformed to the analysis of statistical variables as t2 statistic , q statistic and statistical control charts . 3 ? 3 、介紹了基于子空間的狀態(tài)空間系統(tǒng)辨識概念、原理和優(yōu)點。
From abnormal network flow view , first , we can define some statistical variables and use those variables to make a model , timely get data from network . then anids make full use of data in information lib to detect current network flow whether anomaly or not 若發(fā)現(xiàn)當前數(shù)據(jù)包異常,則進行報警。在異常網(wǎng)絡(luò)流量檢測方面,首先確立測度集和建立模型,從網(wǎng)絡(luò)中實時捕獲樣本值。其次,根據(jù)信息庫中保存的信息,對當前流量進行檢測。
3 . single - variable spc and its disadvantages are pointed out , then some statistical variables and techniques of mspc are emphasized . multi - dimension data processing is transformed to the analysis of a single statistical variable by defining different statistical variables 3 、介紹了單變量統(tǒng)計過程控制方法及其所固有的局限性,概述和總結(jié)了多變量統(tǒng)計過程控制中的主要統(tǒng)計量和基本分析處理方法,為對實際生產(chǎn)過程的監(jiān)控提供了方向。
Compared with the svspc and its problem and shortage , the main statistical variables and technique of mspc are emphasized . multi - dimension data is transformed to the analysis of statistical variables themselves basing on these statistical variables 4 . basing on the model of synthesizing of phosphonic acid dimethyl , we realize the mspc on this process through simulation 通過與單變量統(tǒng)計過程控制對比,指出其所固有的局限和問題,概述和總結(jié)了多變量統(tǒng)計過程控制中的主要統(tǒng)計量和基本分析處理方法,通過各種統(tǒng)計量,將多變量的多維數(shù)據(jù)轉(zhuǎn)化為對統(tǒng)計量本身的單變量處理,對實際過程的監(jiān)控提供了方向。
Summarizes the design and develop ways of monitoring and fault diagnosis systems based on pca for multivariable control system . introduces the main statistical variables , multivariate control charts and the analysis ways of statistical variables . then this paper takes a model of continuous process for example , to show and analysis the result of fault diagnosis based on pca 概述和總結(jié)了基于主元分析的多變量控制系統(tǒng)故障監(jiān)測與診斷系統(tǒng)設(shè)計思想,分析了主要統(tǒng)計量、控制圖以及數(shù)據(jù)基本分析處理方法,并以一個連續(xù)生產(chǎn)過程模型為例,闡述了故障診斷模型的建立過程以及診斷結(jié)果分析。
The main statistical variables and multivariate control charts are introduced . the design idea of fault monitoring and fault diagnosis systems based on principal component analysis for multivariable control system is analyzed . a model of pta oxidation process is talcen as an example to show the result of fault diagnosis based on principal component analysis 介紹了多元統(tǒng)計過程控制在故障診斷中常用的統(tǒng)計量及統(tǒng)計控制圖,分析了基于主元分析的多變量控制系統(tǒng)故障監(jiān)測與診斷的設(shè)計思想,并將其應用于pta氧化過程仿真監(jiān)控。