電力系統在臺穩(wěn)定計算式電力系統不正常運行方式的一種計算。它的任務是已知電力系統某一正常運行狀態(tài)和受到某種擾動,計算電力系統所有發(fā)電機能否同步運行 1運行說明: 請輸入初始功率S0,形如a+bi 請輸入無限大系統母線電壓V0 請輸入系統等值電抗矩陣B 矩陣B有以下元素組成的行矩陣 1正常運行時的系統直軸等值電抗Xd 2故障運行時的系統直軸等值電抗X d 3故障切除后的系統直軸等值電抗 請輸入慣性時間常數Tj 請輸入時段數N 請輸入哪個時段發(fā)生故障Ni 請輸入每時段間隔的時間dt
上傳時間: 2015-06-13
上傳用戶:it男一枚
一個完整的VB.NET tapi3.0 程序,包含自動應答,Incoming,Outgoing,外撥。
上傳時間: 2013-12-14
上傳用戶:mhp0114
這是一個通過mscomm控件的程序,是通過MSCOMM事件來自動檢查串口的數據,並把接受到的數據顯示在指定位置
上傳時間: 2013-12-01
上傳用戶:chens000
上下文無關文法(Context-Free Grammar, CFG)是一個4元組G=(V, T, S, P),其中,V和T是不相交的有限集,S∈V,P是一組有限的產生式規(guī)則集,形如A→α,其中A∈V,且α∈(V∪T)*。V的元素稱為非終結符,T的元素稱為終結符,S是一個特殊的非終結符,稱為文法開始符。 設G=(V, T, S, P)是一個CFG,則G產生的語言是所有可由G產生的字符串組成的集合,即L(G)={x∈T* | Sx}。一個語言L是上下文無關語言(Context-Free Language, CFL),當且僅當存在一個CFG G,使得L=L(G)。 *⇒ 例如,設文法G:S→AB A→aA|a B→bB|b 則L(G)={a^nb^m | n,m>=1} 其中非終結符都是大寫字母,開始符都是S,終結符都是小寫字母。
標簽: Context-Free Grammar CFG
上傳時間: 2013-12-10
上傳用戶:gaojiao1999
超音波測距程式,使用於輪式行動平臺(機器人)本體,本程式可用於避障、導航
上傳時間: 2015-11-06
上傳用戶:TRIFCT
Visual PIC,PIC C源碼生成工具,可用圖影介面自動生成如Timer, Interrupt, ADC等各種源碼。簡體中文版
上傳時間: 2014-02-28
上傳用戶:lanhuaying
Server 端可以開啟多檔,並儲存檔案下載列表,下次啟動時仍可自動載入
標簽: Server
上傳時間: 2013-12-26
上傳用戶:源碼3
We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.
標簽: represented integers group items
上傳時間: 2016-01-17
上傳用戶:jeffery
The XML Toolbox converts MATLAB data types (such as double, char, struct, complex, sparse, logical) of any level of nesting to XML format and vice versa. For example, >> project.name = MyProject >> project.id = 1234 >> project.param.a = 3.1415 >> project.param.b = 42 becomes with str=xml_format(project, off ) "<project> <name>MyProject</name> <id>1234</id> <param> <a>3.1415</a> <b>42</b> </param> </project>" On the other hand, if an XML string XStr is given, this can be converted easily to a MATLAB data type or structure V with the command V=xml_parse(XStr).
標簽: converts Toolbox complex logical
上傳時間: 2016-02-12
上傳用戶:a673761058
altera Quartus II 減法器使用 配合LED,可自動與手動按鈕控製。 (含電路)
上傳時間: 2013-12-13
上傳用戶:王楚楚