dc pc 中文意思是什麼
dc pc
解釋
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For electrodeposition by dc methods, the metals deposite uninterrupted and the particles were also embeded uninterrupted into the coatings ; for electrodeposition by pc method, the particles with biggish volume were desorbed from the coatings and returned to the electrolyte again owing to the presence of pulse interval ; for electrodeposition by prc method, the particles carried positive charges are much more easy to desorb from the coatings owing to the effecf of reverse pulse current combined with pulse interval, in addition, the reverse pulse current also could dissovle the metals, further accelerates the desorption of particles, thus the particles size embeded in the coatings by prc method is the least
直流電沉積時，基質金屬的沉積連續進行，粒子在電極表面不間斷嵌入鍍層;單脈沖電沉積由於脈沖間歇的存在使得具有較大體積的粒子會脫附，重新回到溶液中;採用周期換向脈沖時，反向脈沖電流使表面荷正電的較大的粒子更易從電極表面脫附，同時，反向脈沖電流對基質金屬的溶解作用，也會促進粒子的脫附，因此鍍層中復合粒子尺寸最小。隨著鍍層中粒子復合量的增加，三種鍍層的晶粒都明顯細化，說明al _ 2o _ 3的存在阻止了晶粒的長大，提高了電沉積過程中晶核的形成速率。 -
Digital signal processor ( dsp ) combined with repm bldcm, which build up a dc adjustable speed system, achieve to control multiple motor speed, positive and negative rotate, protect and fault exemine by a true single chip. design and present a electromagnetism scheme of repm bldcm used in electromotion chair drive system. select electronical components and chips in the drive board by contrast with variant drive mode. design the drive board principle picture, make a drive board pcb and debug it. design a principle picture with dsp core. workout the motor control code introduced popular programme modle. test the programme reliability and control performance by linking tms320lf2407 evm, pc, drive borad and the bldcm. the bldcm swatch is prepare experiment
本論文闡述了方波驅動稀土永磁無刷直流電動機的原理及數學模型；設計並給出了一種電動座椅用稀土永磁無刷直流電動機的電磁設計方案；對電機採用何種驅動方式進行了對比分析；對驅動電路進行了元器件選型、原理圖設計、制板及調試；有針對性的闡述了dsp在本系統應用中所涉及到的功能模塊；設計了以dsp為核心的控制電路原理圖；以模塊化的軟體編程思想編制了電機控制軟體；通過tms320lf2407目標板、上位機、驅動板及電機的聯調，證明了系統可行。 -
At last, this paper puts forward that the further study is to install video equipment on pc so as to monitor the real image and realize network manufacture and remote trouble diagnosis as well as to develop the cnc system employing digital servo - dc and servo - ac motors, which help to form a series of commercial products
最後，本文指出了進一步研究的方向是通過攝像設備在pc端進行真實圖像監控，實現網路化製造和遠程故障診斷以及開發使用數字伺服直流和交流電機的數控系統，形成商品化的系列產品。 -
The platform consists of a dc motor, a decelerating mechanism, a driving unit, an i / o circuit of interface, several kinds of sensors and a pc with control software. the communication between the software and the hardware can be implemented on the basis of pc parallel port. this platform uses computer control technology to realize its functions, but for users it can achieve analogue and digital control
平臺由直流電機、機械減速裝置、驅動模塊、 i o介面電路、各種傳感器件和安裝了控制軟體的個人計算機組成，軟硬體通過計算機并行口進行通訊，其內核採用計算機控制技術，對用戶來說既可以作為模擬控制器，也可以實現數字控制器。
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