three-phase Permanent Magnet Synchronous Motor(PMSM) velocity control DSP program
標(biāo)簽： three-phase Synchronous Permanent velocity
上傳時(shí)間： 2014-06-10
上傳用戶：kelimu
Computes the Permanent of a nonnegative integer matrix. Notes: Compile in C++, "g++ -o Permanent Permanent.c".
標(biāo)簽： Permanent nonnegative Computes Compile
上傳時(shí)間： 2013-12-23
上傳用戶：zhangyi99104144
Axial Flux Permanent Magnet Brushless Machines 永磁無刷電動(dòng)機(jī)教科書，國外大學(xué)教材，PDF格式，英文版，帶目錄書簽
標(biāo)簽： Brushless Permanent Machines Magnet
上傳時(shí)間： 2013-11-30
上傳用戶：zl5712176
The ITU-T(Telecommunication Standardization Sector)is a Permanent organ of the International Telecommunication Union(ITU).The ITU-T is responsible for studying technical,operating and tariff questions and issuing Recommen- dations on them with a view to standardizing telecommunications on a worldwide basis.
標(biāo)簽： Telecommunication Standardization International Permanent
上傳時(shí)間： 2014-02-20
上傳用戶：sammi
開平方根IP將sqroot_license.txt中的FEATURE 6AF8_0048 alterad 0000.00 Permanent uncounted 4A689178551B VENDOR_STRING=gl15kdhm5gUPkJD7iM82mn$$ HOSTID=ANY加入就可以使用了！
標(biāo)簽： sqroot_license 4A689178551B Permanent uncounted
上傳時(shí)間： 2016-08-17
上傳用戶：windwolf2000
Medical council of India,registration form pdf booklet for provisional and Permanent registrations.
標(biāo)簽： registrations registration provisional Permanent
上傳時(shí)間： 2013-12-18
上傳用戶：cc1915
永磁同步電機(jī)(Permanent Magnet Synchronous Motor)因功率密度大、效率高、過載能力強(qiáng)、控制性能優(yōu)良等優(yōu)點(diǎn)，在中小容量調(diào)速系統(tǒng)和高精度調(diào)速場合發(fā)展迅速。但由于永磁同步電機(jī)的磁場具有獨(dú)特的交叉耦合和交叉飽和現(xiàn)象，且其控制系統(tǒng)是一個(gè)強(qiáng)非線性、時(shí)變和多變量系統(tǒng)，要實(shí)現(xiàn)高精度調(diào)速就需對(duì)其控制策略進(jìn)行深入研究。 永磁同步電機(jī)調(diào)速系統(tǒng)中，位置傳感器的存在使得系統(tǒng)成本增加、結(jié)構(gòu)復(fù)雜、可靠性降低，所以永磁同步電機(jī)的無位置傳感器控制成為一個(gè)新的研究熱點(diǎn)。本文擬借助于神經(jīng)網(wǎng)絡(luò)良好的逼近能力，實(shí)現(xiàn)永磁同步電機(jī)的無位置傳感器控制。 人工神經(jīng)網(wǎng)絡(luò)(Neural Network)可以逼近任意復(fù)雜非線性映射，具有很強(qiáng)的自學(xué)習(xí)自適應(yīng)能力，十分適合于解決復(fù)雜的非線性控制問題。其中，BP神經(jīng)網(wǎng)絡(luò)是目前廣泛應(yīng)用的神經(jīng)網(wǎng)絡(luò)之一，得到了較為深入的研究，其結(jié)構(gòu)簡單，需要離線確定的參數(shù)少、泛化能力強(qiáng)、逼近精度高、實(shí)時(shí)性強(qiáng)，采用BP神經(jīng)網(wǎng)絡(luò)實(shí)現(xiàn)永磁同步電機(jī)的調(diào)速控制具有重要意義。 文中提出了基于BP神經(jīng)網(wǎng)絡(luò)的永磁同步電機(jī)自適應(yīng)調(diào)速控制策略，建立了一種包含辨識(shí)網(wǎng)絡(luò)和控制網(wǎng)絡(luò)的雙神經(jīng)網(wǎng)絡(luò)結(jié)構(gòu)控制系統(tǒng)。辨識(shí)網(wǎng)絡(luò)在線動(dòng)態(tài)辨識(shí)系統(tǒng)輸出并對(duì)控制網(wǎng)絡(luò)參數(shù)進(jìn)行調(diào)整，控制網(wǎng)絡(luò)與PI控制方法相結(jié)合實(shí)現(xiàn)永磁同步電機(jī)自適應(yīng)轉(zhuǎn)速控制。仿真結(jié)果表明，該系統(tǒng)動(dòng)態(tài)響應(yīng)快、實(shí)時(shí)性較強(qiáng)、精度較高。 文中提出了一種基于混合訓(xùn)練算法的BP神經(jīng)網(wǎng)絡(luò)永磁同步電機(jī)無位置傳感器控制方法。采用混沌優(yōu)化和梯度下降法相結(jié)合的混合算法對(duì)BP神經(jīng)網(wǎng)絡(luò)進(jìn)行離線訓(xùn)練后，將其用于永磁同步電機(jī)的轉(zhuǎn)子位置角在線估計(jì)。結(jié)果表明，該訓(xùn)練算法可以有效地加快神經(jīng)網(wǎng)絡(luò)收斂速度，且估計(jì)的轉(zhuǎn)子位置角誤差較小、精度較高。 文中建立了以TMS320F2812芯片為核心的永磁同步電機(jī)調(diào)速控制系統(tǒng)，并進(jìn)行了相應(yīng)的軟硬件設(shè)計(jì)，為實(shí)現(xiàn)永磁同步電機(jī)的各種控制策略奠定了實(shí)驗(yàn)基礎(chǔ)。DSP控制系統(tǒng)為神經(jīng)網(wǎng)絡(luò)訓(xùn)練提供樣本，為研究永磁同步電機(jī)的自適應(yīng)調(diào)速控制和轉(zhuǎn)子位置角估計(jì)創(chuàng)造了條件。
標(biāo)簽： BP神經(jīng)網(wǎng)絡(luò) 永磁同步電機(jī) 自適應(yīng)控制
上傳時(shí)間： 2013-07-03
上傳用戶：kakuki123
GForge 3.0 協(xié)作開發(fā)平臺(tái) 支持CVS, mailing lists, bug tracking, message boards/forums, task management, Permanent file archival, 和 total web-based administration.
標(biāo)簽： management tracking mailing message
上傳時(shí)間： 2013-12-14
上傳用戶：變形金剛
TION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. WARNING! Although the AD7008 features proprietary ESD protection circuitry, Permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
標(biāo)簽： Electrostatic electrostatic discharge sensitive
上傳時(shí)間： 2014-01-12
上傳用戶：2467478207
G UILLAIN-BARRéSYNDROME(GBS)is an uncommon disorder,but one whose impact is far out of proportion to its incidence.Despite a usually good prognosis,GBS is a particularly frightening and often life- altering experience for those diagnosed with the disorder.Many patients are acutely aware of the rapid loss of control of their muscular function, including vital functions such as breathing and swallowing,and fre- quently feel that they are dying.The experience is almost as unnerving for the families of affected individuals.During the acute phase of the ill- ness GBS patients experience the indignity of helplessness in addition to their fear of death or Permanent disability.Prolonged disability is com- mon and some Permanent residual effects are becoming increasingly recognized.It has been our experience in meeting patients at support groups,that individuals who have been affected by GBS have a great desire for a better understanding of the disorder,even years after the acute experience.
標(biāo)簽： UILLAIN-BARR proportion SYNDROME disorder
上傳時(shí)間： 2017-07-11
上傳用戶：cuibaigao
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