本文首先分析了MSC之間E接口的組網方式、協議棧、監務實現原理及信令流程,特別對跨MSC切換原理進杼了詳細的分析。接著針對跨MSC切換容易失敗導致搏話約特點,對鑫秘可麓導致切換失敗戇原因遞簿了分援,憨結了查找殿閔、解決問題的辦法。
上傳時間: 2013-10-09
上傳用戶:wfeel
RENYWELL有著數多年安全控制產品研發、生產的經驗。來自RENYWELL的安全可以給工廠和設備提供最優的安全可靠監控。應用符合系列安全標準的最高安全登記。EN ISO 13849-1 標準PL“e”級、EN IEC 62061標準SILCL 3級、EN IEC 61508標準SIL 3級。
上傳時間: 2013-10-12
上傳用戶:Bert520
主要介紹了高效率E類射頻功率振蕩器的原理和設計方法,通過電路等效變換,E類射頻功率振蕩器最終轉換成與E類放大器相同的結構,MOS管工作在軟開關狀態,漏極高電壓、大電流不會同時交疊,大大降低了功率損耗,在同等工作條件下,能夠獲得與E類放大器相似的高效率。文中以ARF461型LDMOS做為功率器件,結合E類射頻振蕩器在等離子體源中的應用,給出了的設計實例。ADS仿真結果表明,在13.56MHz的工作頻率下,振蕩器輸出功率46W,效率為92%,符合設計預期。
上傳時間: 2014-02-10
上傳用戶:yczrl
Cimatron E 7.0教程 使用Cimatron E 起草應用,建立部分或者組裝圖圖表是可能的,由2D 風景組成。在畫的每一個內有一條或更多床單,起草的符號和注釋可能被增加并且編輯。 這些畫圖表包含象 起草標準那樣的具體的特性,意見歸因于,框架,模板等等。在各種各樣的起草的概念將的這個練習過程中沿著邊討論Cimatron E的動態的能力。 1、打開一份起草的資料 Open up the Drafting application within Cimatron E. 2、現在起草應用的Cimatron 打開 資料在Cimatron E里使用起草被叫為一張畫。 有一條床單的一張畫被創造一份起草的資料自動創 造。 3、建立床單 一條床單包含一個一個模型,部分或者會議的2D 意見的布局。 除2D之外幾何學建立使用 sketcher,起草符號,注釋能被增加給床單。 無限的床單的數量能被歸入一張畫允許一象要求 的那樣安排許多意見。
上傳時間: 2014-12-31
上傳用戶:13817753084
E路航LH950N導航儀實現通電自動開機、熄火斷電自動休眠功能
上傳時間: 2014-01-16
上傳用戶:3291976780
MR-E-A伺服手冊
上傳時間: 2013-10-30
上傳用戶:半熟1994
E路航LH950N導航儀實現通電自動開機、熄火斷電自動休眠功能
上傳時間: 2013-11-08
上傳用戶:ruixue198909
MR-E-A伺服手冊
上傳時間: 2013-10-16
上傳用戶:liaocs77
2.1.2 SPARTANⅡ和SPARTANⅡE系列產品
上傳時間: 2013-11-16
上傳用戶:star_in_rain
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
上傳時間: 2013-11-14
上傳用戶:zoudejile