current vector造句
例句與造句
- Nagase mother goose one , please keep your current vector
保持你現(xiàn)在的行駛方向。 - Projects the current vector from screen space into object space
將當(dāng)前向量從屏幕空間投影到對象空間。 - Projects the current vector from object space into screen space
將當(dāng)前向量從對象空間投影到屏幕空間。 - The first one is based on keeping the input current vector in phase with the input voltage vector
第一種方法基于使輸入電流矢量與輸入電壓矢量保持固定偏置角。 - The initial position can he measured accurately through controlling a given position current vector of motor stator
提出了一種電機初始位置的確定方法，通過輸出給定位置的定子電流矢量的方法，可以精確檢測出電機初始位置。 - It's difficult to find current vector in a sentence. 用current vector造句挺難的
- The duty expressions of mc have been derived by the method of separate modulation and then combination of input current vector and output voltage vector
采用對矩陣變換器的輸入電流矢量和輸出電壓矢量分別調(diào)制然后組合的方法得到矩陣變換器的占空比表達(dá)式。 - Furthermore , vector control methods to pmsm are studied with the result that the current vector decouple is actually an approximate static linear decouple control , viz . an incomplete decouple . 3
研究了pmsm的矢量控制方法，通過分析得出電流矢量解耦實際上一種近似的線性化的靜態(tài)解耦控制，是一種不完全解耦。 - After simulating the reverse recovery characteristics , the forward and backward i - v characteristics , carries distribution and current vectors et al by medici , the optimal design to some key parameters is proposed
同時對器件反向恢復(fù)特性、正反向-特性及載流子分布、電流矢量等物理量進(jìn)行了模擬和詳細(xì)的機理分析。 - And it analyses the power factor in different conditions via the fourier anlysis of the stator current and voltage . then , it sets up the simulating model for maximum torque / current ratio . the torque can be controlled by controlling the angle of stator current vector
在矢量控制實現(xiàn)的基礎(chǔ)上,采用傅立葉分解分析電機的相電流和相電壓,得到矢量控制系統(tǒng)中電壓和電流的基波分量和相位角,進(jìn)而判斷電機的功率因數(shù),分析在不同控制情況下電機的功率因數(shù)狀況。 - Simulations for these two conditions prove validity of theoretical analysis . on the basis of this scheme , a new speed adjustment strategy about vector control of doubly fed motor based on rotor current vector fixing is given . it introduces the closed - loop of stator excitation current to the system , which increases two adjustment channels : speed and excitation adjustment
經(jīng)理論分析可知，該方案中，由于轉(zhuǎn)子電流與磁鏈無法實現(xiàn)完全解耦，故僅在亞同步工況下有效，在超同步時則會因為調(diào)速系統(tǒng)不能自動校正轉(zhuǎn)子磁鏈幅值變化引起的橫向電流而使系統(tǒng)失去控制，無法達(dá)到穩(wěn)定狀態(tài)。 - This strategy has many advantages : solving the problems that the system is unsteady under super - synchronization ; improving power factor of stator ( it is unity relative to that of rotor ) ; no rotor position sensor and no initial position measurement , easily building up doubly fed speed adjustment system with speed sensorless because adjusting speed is taken in the rotor coordinate and rotor current vector fixing is implemented
該方案由于引入了定子電流勵磁分量的閉環(huán)控制，使系統(tǒng)同時具有轉(zhuǎn)速和勵磁調(diào)節(jié)兩個調(diào)節(jié)通道，具有如下優(yōu)點：一、解決了超同步工作工況不穩(wěn)定的問題；二、提高了定子側(cè)的功率因數(shù)(與轉(zhuǎn)子側(cè)功率因數(shù)為1相比) 。三、由于速度調(diào)節(jié)在轉(zhuǎn)子坐標(biāo)系下進(jìn)行，并以轉(zhuǎn)子電流矢量定向，所以無須轉(zhuǎn)子位置傳感器，也不用檢測初始位置，易于組成無速度傳感器雙饋調(diào)速系統(tǒng)。 - The pwm subdivision driving based on single - chip processing unit control using electric current vector even rotation with uniform amplitude method is presented , after analyzing two methods of subdivision driving : equal electric current and electric current vector even rotation with uniform amplitude , realizing 32 subdivision driving of stepper motor
分析了兩種細(xì)分驅(qū)動方法：等電流法和電流矢量法恒幅均勻旋轉(zhuǎn)法，提出了基于單片機控制的pwm電流矢量恒幅均勻旋轉(zhuǎn)的細(xì)分驅(qū)動技術(shù)，實現(xiàn)了步進(jìn)電機32細(xì)分驅(qū)動。 - Because of its excellent performance , permanent magnet synchronous motor ( pmsm ) has been paid more attention in the past two decades . with the development of the pmsm design and its control techniques , the pmsm has widely been used in many industrial applications . when time goes on , direct torque control ( dtc ) has become an accepted advanced control method beside the current vector control
由于永磁同步電機具有體積小、功率密度大、效率和功率因數(shù)高等明顯特點，從70年代末開始，永磁同步電機就得到廣泛重視，經(jīng)從事電機及其驅(qū)動系統(tǒng)研究的學(xué)者和研究人員的努力，其本體設(shè)計和控制方式在近二十年內(nèi)得到了長足的發(fā)展，商用化的產(chǎn)品也已經(jīng)進(jìn)入到工業(yè)生產(chǎn)應(yīng)用的各個面面。 - So by analyzing the stability of voltage vector and the changeability of current vector , we proposed to construct sinusoidal sequences with the same and delaying ninety - degree phase angles to voltage vector , then to multiply with the current vector respectively to bring about active and reactive power
本文分析了單相系統(tǒng)電壓矢量的穩(wěn)定性以及電流矢量的多變性特點，提出了對電壓矢量采用構(gòu)造與之同相位和滯后90相位正弦序列的辦法，并分別與電流矢量相乘從而導(dǎo)出其有功和無功功率。 - The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability , but also the necessary precondition of enhance power system stabilization , to remove faulty line quickly and accurately , also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple , reliable and good - selective protection manner to any variety of transmission lines , power system development needs current differential protection apply to transmission lines , moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly , the paper discusses , analyses the research and application transmission line protection in detail , compare the principle and realistic presupposition of general line pilot protections secondly , because conventional current vector differential protection are influenced easily by load current and transitional resistance , in order to at the same time quicken protection act , the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied , results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability , sensitivity and anti - saturation of current transformer in addition , synchronous current sampling methods at all terminals of line is analyzed and estimated lastly , the principle and criterion . also device design about current sampling values differential protection based on optical fiber communication , which apply to short transmission lines are concretely investigated ,
基于基爾霍夫定律的電流差動保護(hù)無論對于何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護(hù)形式，電力系統(tǒng)的發(fā)展使得電流差動保護(hù)應(yīng)用于線路保護(hù)成為需要，而電子、通信技術(shù)的發(fā)展使得電流差動保護(hù)應(yīng)用于輸電線路成為可能。首先，本文對目前線路保護(hù)的研究和實際應(yīng)用情況進(jìn)行了討論和分析，比較了常用線路縱聯(lián)保護(hù)的實現(xiàn)原理和實現(xiàn)條件及優(yōu)缺點。其次，針對常規(guī)相量電流差動保護(hù)易受正常負(fù)荷電流和故障過渡電阻影響的缺點，同時為加快差動保護(hù)的動作速度，對基于故障分量瞬時采樣值電流差動保護(hù)的原理、判據(jù)、動作特性等作了討論和分析，結(jié)果表明基于故障分量瞬時采樣值電流差動保護(hù)在可靠性、靈敏度、抗電流互感器飽和方面明顯優(yōu)于常規(guī)相量電流差動保護(hù)，對電流差動保護(hù)各端的同步采樣方法和數(shù)據(jù)通信也進(jìn)行了分析和評價。