Abstract: This application note discusses the development and deployment of 3G cellular femtocell base stations. The technicalchallenges for last-mile residential connectivity and adding system capacity in dense urban environments are discussed, with 3Gfemtocell base stations as a cost-effective solution. Maxim's 3GPP TS25.104-compliant transceiver solution is presented along withcomplete radio reference designs such as RD2550. For more information on the RD2550, see reference design 5364, "FemtocellRadio Reference Designs Using the MAX2550–MAX2553 Transceivers."
標簽: Base-Station Applications Single-Chip Transceiver
上傳時間: 2013-11-05
上傳用戶:超凡大師
為了提高直接轉矩控制(DTC)系統定子磁鏈估計精度,降低電流、電壓測量的隨機誤差,提出了一種基于擴展卡爾曼濾波(EKF)實現異步電機轉子位置和速度估計的方法。擴展卡爾曼濾波器是建立在基于旋轉坐標系下由定子電流、電壓、轉子轉速和其它電機參量所構成的電機模型上,將定子電流、定子磁鏈、轉速和轉子角位置作為狀態變量,定子電壓為輸入變量,定子電流為輸出變量,通過對磁鏈和轉速的閉環控制提高定子磁鏈的估計精度,實現了異步電機的無速度傳感器直接轉矩控制策略,仿真結果驗證了該方法的可行性,提高了直接轉矩的控制性能。 Abstract: In order to improve the Direct Torque Control(DTC) system of stator flux estimation accuracy and reduce the current, voltage measurement of random error, a novel method to estimate the speed and rotor position of asynchronous motor based on extended Kalman filter was introduced. EKF was based on d-p axis motor and other motor parameters (state vector: stator current, stator flux linkage, rotor angular speed and position; input: stator voltage; output: staror current). EKF was designed for stator flux and rotor speed estimation in close-loop control. It can improve the estimated accuracy of stator flux. It is possible to estimate the speed and rotor position and implement asynchronous motor drives without position and speed sensors. The simulation results show it is efficient and improves the control performance.
上傳時間: 2015-01-02
上傳用戶:qingdou
program to trasmit data to a TI92 with the TI Graph-Link
標簽: Graph-Link program trasmit data
上傳時間: 2015-01-03
上傳用戶:youke111
C詞法分析器實現,AOE網絡算法實現,KRUSKAL算法實現,PRIM算法實現,計算機圖形學影線填充算法(鍵盤坐標輸入),計算機圖形學影線填充算法(鼠標輸入),人工智能A*算法實現的C語言程序
上傳時間: 2015-01-05
上傳用戶:hwl453472107
一個利用中斷修改后進行的A/D采集功能的使用軟件.
上傳時間: 2015-01-06
上傳用戶:LIKE
CSL is a programming language with C syntax and comprehensive libraries. The compact scripting engine can also be embedded into your own applications as a powerful macro language. Windows Distribution utilities.
標簽: comprehensive programming libraries scripting
上傳時間: 2013-11-27
上傳用戶:xuanchangri
a set of cross-platform tools that is useful for programming the GBA written in Java.
標簽: cross-platform programming written useful
上傳時間: 2015-01-06
上傳用戶:yd19890720
Giga Crime Fighting Mecha Gelato-Bots: The Supreme Icecream-Tron Revolution 8,000,000. A top-down adventure game with three themes; mecha, anime and icecream. This project hopes to evolve with action/rpg/multiplayer elements like classic console games.
標簽: Icecream-Tron Gelato-Bots Revolution 000
上傳時間: 2013-12-18
上傳用戶:D&L37
DEbug 關于制作瑞星殺毒軟件密鑰盤的源碼 MOV BX,200 ;內存基址(0面) MOV DH,00 ;磁頭號00 MOV DL,00 ;驅動器號00(A盤) MOV CX,4F01 ;4F(即79)號磁道01號扇區 即(CH=4F CL=01) MOV AH,05 ;格式化磁道 MOV AL,09 ;連續讀取9個扇區 INT 13 ;調用13號中斷 INT 3 MOV BX,300 ;內存基址(1面) MOV DH,01 ;磁頭號01 MOV DL,00 ;驅動器號00(A盤) MOV CX,4F01 ;4F(即79)號磁道01號扇區 即(CH=4F CL=01) MOV AH,05 ;格式化磁道 MOV AL,09 ;連續讀取9個扇區 INT 13 ;調用13號中斷 INT 20 ;返回dos 初學匯編,請各位多多指教!
上傳時間: 2015-01-07
上傳用戶:我干你啊
A*
標簽:
上傳時間: 2013-12-20
上傳用戶:569342831