modulation frequency造句
例句與造句
- For the modulation frequency and the cavity are very difficult to maintain matching , so it is difficult to guarantee the long time steady work of actively mode - locked fiber laser
所以不能保證長時(shí)間穩(wěn)定工作,必須采取特殊的措施來穩(wěn)定主動(dòng)鎖模光纖激光器的腔長。 - This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation , at the same time the results are given
本文對(duì)雙極性調(diào)制的無刷直流電動(dòng)機(jī)仿真分析了轉(zhuǎn)速和調(diào)制頻率對(duì)轉(zhuǎn)矩影響同時(shí)給出仿真結(jié)果。 - The vibration control has two main types : initiative and passivity . i use the modulation frequency tuned mass damper to control the vibration of it and adopt ansys5 . 5 to calculate the result of it
振動(dòng)控制主要有主動(dòng)和被動(dòng)控制，我是應(yīng)用被動(dòng)控制的調(diào)制調(diào)頻質(zhì)量阻尼器進(jìn)行橋機(jī)的控制。 - Pulse signal is connected by the customer . signal can be sine wave or square wave . modulation frequency can be to 1mhz few model can be to 10mhz ; inner modulation type no need signal from out side
外調(diào)制式激光器留有專用的信號(hào)接口，由用戶接入脈沖信號(hào)，信號(hào)可以是正弦波,也可以是方波，調(diào)制頻率可到1mhz個(gè)別型號(hào)調(diào)制頻率可到10mhz 。 - Some modulation parameters , such as the carrier frequency and the symbol rate , can be estimated prior to the recognition of modulation types . such other parameters as the modulation index , the modulation frequency deviation , and the signal broadband can be further estimated after recognition
部分調(diào)制參數(shù)如載波頻率、符號(hào)速率在識(shí)別之前獲得，在識(shí)別完成之后可以進(jìn)一步估計(jì)調(diào)制指數(shù)、調(diào)制頻偏、信號(hào)帶寬等其余參數(shù)。 - It's difficult to find modulation frequency in a sentence. 用modulation frequency造句挺難的
- This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation ; the influence of snubber circuit , dead time effects , and modulation frequency to igbt pwm inverterbridge is taken into account , too
本文對(duì)雙極性調(diào)制的無刷直流電動(dòng)機(jī)仿真，分析了轉(zhuǎn)速和調(diào)制頻率對(duì)轉(zhuǎn)矩影響；并綜合考慮緩沖電路、控制死區(qū)及載波頻率對(duì)pwm逆變電路中igbt開關(guān)損耗的影響。 - Sigma delta modulation frequency synthesis is an advanced technology that applies in pll ( phase - locked loop ) frequency synthesizer , which could transform the spurs created by fractional - n synthesizers into phase noise that could be filtered by inherent low - pass identity in pll
此技術(shù)應(yīng)用-調(diào)制將鎖相環(huán)頻率合成器中分?jǐn)?shù)分頻器產(chǎn)生的相位雜散轉(zhuǎn)化為相位噪聲,通過鎖相環(huán)本身低通濾波特性濾除,從而使用單環(huán)即可獲得很高頻率分辨率和極低的相位雜散。 - The system can generate three - phase spwm pulses and has following characters : the range of modulation frequency is from 0 khz to 4 khz . and can be divided to 7 classes to control . the carrier frequency may be selected up to 24 khz , and can be divided to 8 classes to control ; rotational frequency is defined to 16 bits
該系統(tǒng)能產(chǎn)生三相六路正弦脈寬調(diào)制( spwm )波形;調(diào)制頻率范圍為0 4khz ,分7級(jí)控制; 16位的速度控制分辨率;載波頻率分8級(jí)控制,最高可達(dá)24khz ;系統(tǒng)接口兼容intel系列和motorola系列單片機(jī);該系統(tǒng)控制簡單、精確,易修改,可現(xiàn)場編程;同時(shí)具有脈沖延時(shí)小、最小脈沖刪除、過壓和過流保護(hù)功能等特點(diǎn),可應(yīng)用于pwm變頻調(diào)速系統(tǒng)的全數(shù)字化控制。 - The principle advantages of vcsels over conventional edge - emitting lasers lie in ultralow threshold current , small far - field divergent angle , high modulation frequency , potential for wafer level testing and the ease for single longitudinal mode operation and two - dimension integration . as a result they show considerable promise for applications such as optical fiber communication , parallel optical interconnects , optical information processing and neural networks , etc . a direct coupling theoretical model in quasi - three - dimension for the gain - wave guide vertical - cavity surface - emitting lasers has been created in this paper
它與傳統(tǒng)的邊發(fā)射激光器相比具有更優(yōu)越的特性，例如，具有極低的閾值、較小的遠(yuǎn)場發(fā)散角、調(diào)制頻率高、易實(shí)現(xiàn)單縱模工作和二維集成，無須解理封裝即可進(jìn)行在片測試等，所以，它被廣泛應(yīng)用于光纖通訊、并行光互聯(lián)、光信息處理、光神經(jīng)網(wǎng)絡(luò)等領(lǐng)域。 - A comprehensive theory is presented for fm spectroscopy of doppler - broadened molecular iodine absorption lines . the relationship betwcen fm spectroscopy and modulation frequency and modulation index has been studied . the whole circuit for thc frcquency stabilized laser system has been developed
建立了多普勒加寬碘分子線性吸收fm光譜的一般理論，對(duì)fm光譜與調(diào)制頻率和調(diào)制度的關(guān)系進(jìn)行了研究；并研制了532nmnd : yvo _ 4 / ktp碘吸收穩(wěn)頻激光器的電路系統(tǒng)；提出了虛擬激光穩(wěn)頻技術(shù)的概念。 - Simulations on light intensity are validated by experiments and influence of mechanical dither on gyro frequency stabilization is studied for the first time . then it is point out that the key to improve the precision of frequency stabilization is to choose appropriate modulation frequency based on the frequency spectrum of sharp pulses , which is introduced by mechanical dither . thereafter , experiments of frequency stabilization under different modulation frequencies are made
通過實(shí)驗(yàn)驗(yàn)證了光強(qiáng)仿真結(jié)果，首次分析了機(jī)械抖動(dòng)對(duì)穩(wěn)頻的影響，指出提高機(jī)抖陀螺小抖動(dòng)穩(wěn)頻精度的關(guān)鍵在于：根據(jù)機(jī)械抖動(dòng)引入的交流光強(qiáng)尖峰脈沖頻譜分布選擇合適的調(diào)制頻率，并給出了不同調(diào)制頻率的穩(wěn)頻實(shí)驗(yàn)結(jié)果。 - Secondly , considering the need of frequency stabilization , mdrlg ' s light intensity is simulated . the simulations indicate that sharp pulses are produced in the ac light intensity by mechanical dither . as the pulses have a wide frequency spectrum and range over the modulation frequencies of frequency stabilization , mechanical dither may reduce the precision of frequency stabilization
其次，根據(jù)穩(wěn)頻需要對(duì)機(jī)抖陀螺輸出光強(qiáng)進(jìn)行了仿真，仿真表明機(jī)械抖動(dòng)會(huì)在交流光強(qiáng)中引入尖峰脈沖，且尖峰脈沖頻譜分布較寬，在小抖動(dòng)穩(wěn)頻調(diào)制頻率范圍內(nèi)有功率輸出，因而可能降低穩(wěn)頻精度。