With the development of the network and the multi - processor system, the research, simulation and the impemeni of the system - level fault diagnosis which is the very important means to increase the reliability of the system, are becoming more and more important. on the system - leve1 fault diagnosis, based on the group theory of system - level fault diagnosis that has been put forward by pro f zhang, the paper constructs newly the theory bases, improves on the matrix method, reinforces and consummates group arithmetic of all kinds of test mode, for the first time, analyses and discusses the equation solution of all kinds of models, so al1 the consistent fault patterns ( cfp ) could be found, straightly and high efficiently, even if the sufficient and necessary condition of t - diagnosable is dissatisfied and the complexity of system - level fault diagnosis is greatly decreased, especialy in strong t - diagnosabl6 system. last the simulation system ' s function has been extended and the application hotspot and the development trend have been disscussed
本人在張大方教授等人提出的基於集團的系統級故障診斷的理論基礎上,重新構建了系統級故障診斷的理論基礎,定義了系統級故障診斷測
試模型的三值表示;改進了系統級故障診斷的矩陣方法,重新定義了測
試矩陣、鄰接矩陣、結點對、結點對的相連運算、極大準集團和斜加矩陣,由此能直觀、簡便地生成集團和極大獨立點集;補充和完善了各類測
試模型的系統級故障診斷的集團演算法,通過定義集團測
試邊和絕對故障集,簡化了集團診斷圖,由此能較易地找到所有的相容故障
模式,即使不滿足t -可診斷性,大大減少了系統級故障診斷的復雜度,尤其是對強t -可診斷系統;首次分析探討了各類測
試模型的方程解決,由此從另一角度能系統地、高效率地求出所有的相容故障
模式( cfp ) :擴充了系統級故障診斷
模擬系統的功能,快速、直觀和隨機地
模擬實驗運行環境,進行清晰和正確的診斷,同時提供大量的實驗數據用於理論研究,優化演算法和設計。
This approach improves the test model by transforming the uml state diagram to extended finite state model ( efsm ), then eliminating the infeasible paths in the efsm. thus we can generate test message sequences from the resulting efsm and sort them
該方法改進了基於uml狀態圖的測
試模型:通過將uml狀態圖轉化成擴展有限狀態機
模型( efsm ) ,然後消除efsm中的不可達路徑;從而根據該efsm生成測
試消息序列,並對消息序列進行排序。
The system initiation module mainly solves the system automatical self - test and initiation of the intelletual testing module ; the independent testing function of the parameters of the electric apparatus can be realized by the electric apparatus parameters testing module ; data handling module can include the following factions : visiting the database, storing the parameters of testing process, exchanging data and printing the result data
根據控制軟體功能的需求,可對整個軟體分三個功能
模塊來實現。系統初始化
模塊用於實現系統自檢與各智能測
試模塊的初始化;電器參數測
試模塊實現了電器各參數獨立測
試的功能;數據處理
模塊包括數據庫的訪問、測
試過程參數的存儲處理,以及結果數據交換與輸出功能。
Examination - reform studies are conducted in the terminal examination on the curriculum of cooking - nutrition as a carrier, and simultaneously further adaptations are made on the examination evaluation system
摘要文章以烹飪教育與營養專業開設的《烹飪營養學》課程為載體,在學期考
試模式方面進行了一些改革和初步嘗
試,進而對現有的考
試評價體系作了進一步完善。
The method of test education has to be changed to deepen quality education to cultivate students of tremedous promise with both political integrity and professional competence
要改變目前「應
試教育」的考
試模式,從根本上推動素質教育的深化,使得學生真正把做人和做事統一起來,成為社會的棟梁之才。
Testing model of mortar strength for concrete vessel
水泥船用砂漿強度
試體
試模
Hwfet highway fuel economy test
美國環保局的高速公路省油測
試模式
Aimed to realize the problem of quenched rail qualification forcast through quantitative analysis of quenched rail surface hardness by eddy current, and combined the eddy current theory with the computer image processing and signal analysis, the hardness testing model is established in this paper
針對渦流無損檢測淬火鋼軌踏面硬度的定量分析來實現淬火鋼軌質量保證預報問題,將電渦流理論與現代計算機圖象處理和信號分析相結合,完成硬度測
試模型建立。
Abstract : aimed to realize the problem of quenched rail qualification forcast through quantitative analysis of quenched rail surface hardness by eddy current, and combined the eddy current theory with the computer image processing and signal analysis, the hardness testing model is established in this paper
文摘:針對渦流無損檢測淬火鋼軌踏面硬度的定量分析來實現淬火鋼軌質量保證預報問題,將電渦流理論與現代計算機圖象處理和信號分析相結合,完成硬度測
試模型建立。
The problems are existing in different degree, such as school education is subject to school examination, it takes the high score as the aim that teaching and learning seeks, examination design and practice is not enough scientific and is wild about copying the mode of the elective examinations out of school, the examination statute construction lags behind the demands of examination practice developing, etc. the roots are stale concept, reversed position, garbled character, random operating and disturbing by the environment
諸如,學校教育從屬于學校考
試,以高分為教與學的追求目標,考
試設計、實施欠科學,熱忠於校外選拔考
試模式的
模仿,考
試法規建設滯後於考
試實踐發展需要等問題,都還不同程度的存在。其根源就在於觀念陳腐、位置顛倒、性質混淆、操作隨意、環境干擾。
8 test1 i low : for normal operation high : test mode
測
試0口,輸入低電平:正常工作;高電平為測
試模式
Text the range of gps receiver rf input signal, simulate cable loss of signal strength etc
Gps接收機rf輸入信號范圍測試模擬電纜線信號衰減等。