1785LT數控模塊
VME總線- 64與騰宇宙的IID A32/A24/A16/D64/D32/D16/D8，MBLT64和快速支持硬件字節交換主要包括3.3v電壓調整器及基準電壓源、脈寬調制器(PWM)、驅動邏輯、推挽式驅動器、欠壓關斷電路、限流電路、電流檢測電路。UCD8220/8620可運行在峰值電流模式或電壓模式，不僅能對極限電流進行編程，還輸出一個能受主控制器監控的極限電流數字標志。UCD8220/8620的時序工作波形如圖3所示。
 數字信號處理器(DSP)
UCD9501是TI公司專為數字電源系統配套的數字信號處理器，其同類產品還有TMS320F2808，TMS320F2806。它們內部主要包含100MHz的32位CPU、時鐘振蕩器、3個32位定時器、看門狗電路、內部/外部中斷控制器、SCI總線、SPI總線、CAN總線及I C總線接口、l2路PWM信號輸出、系統控制器、16通道12位。ADC、16K×16 Flash、6K×16 SARAM、1K×16ROM。它采用標準的3.3v輸入/輸出接口，與UCD8K系列兼容。利用Power PADTM HTSSOP，和QFN軟件包可進行編程。
電路設計
智能化數字電源系統可由PWM、電源驅動器、DSP、接口電路、顯示器和鍵盤6部分組成。系統框圖如圖4所示。
交流電壓經過整流濾波后獲得的+36～72 v直流輸入電壓U1，接高頻變壓器的初級繞組;還經過R1、R2分壓后，分別接UCD9501的模擬輸入端AN1及AN2。初級繞組的另一端接功率MOSFET。R3為限流電阻。R4為電流檢測電阻。偏置繞組的輸出電壓通過VD1、C1整流濾波后得到+12v的直流偏壓，接UCD7100的電源端(UDD)。UCD7100輸出的3.3 v電壓為UCD9501提供電源。次級整流濾波電路由VD2、L和C2組成，VD3為續流二極管，UD為直流輸出電壓。從UCD9501輸出的脈寬調制信號(PWMA)送至UCD7100的IN端。UCD7100的極限電流標志端(CLF)接UCD9501的中斷端(INT)，極限電流設定端(ILIM)接UCD9501的GMTR端。利用光耦隔離放大器可將輸出級與輸入級進行隔離。
當UDD=12V，UCD7100的負載電容CLOAD=10nF,開關頻率f=300kHz時，偏置功耗為P=CLOADUDD2=10nF*(12v)2*300kHz=0.432W。偏置電流I=P/UDD=0.432W/12V=0.036A。
若采用UCD7201，則可驅動兩只外部功率MOSFET。此外還可用UCD9501和UCD8620組成數字電源系統。
結語
數字電源系統具有高集成度、高性價比、電源管理功能完善、外圍電路簡單、能面向用戶設計等優點，為實現智能化電源系統的優化設計創造了有利條件。
伺服控制是為滿足某種目的，產生運動和對物體運動進行控制是我們人類重要的活動之一。伺服控制是對物體運動的位置、速度及加速度等變化量的有效控制。

在XVME - 113的RAM / ROM內存模組是雙高（6U），VME總線兼容的電路板。 它多可容納12個內存，24的EPROM，EEPROM或12 MB的Mb的12 MB的MB的閃存。

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