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- Abstract: In this paper, we describe the design and function, application of the power unit controller for mini RF excited CO2 laser, pulse width modulation (PWM) is the convenient way to vary the laser average output power from 1%to 100%of maximum. 文摘:述了小型RF激勵CO2激光器的功率控制器設計、功能和應用，根據脈寬調制原理可以方便地把激光功率從1%25變化到100%25。
- Pulse width modulator and sample maintenance installment. 脈沖寬度調制器和取樣保持裝置。
- Pulse Width Decoder-A Flxxible Application of Integrated Analog Switch CMOS. CMOS集成模擬開(kāi)關(guān)的變通應用-脈寬解碼器。
- The TXL readout pulse may have the same pulse width as the TXS readout pulse. 轉移電晶體TXL可具有與轉移電晶體TXS相同的讀出脈波寬度。
- When the rf pulse is combined with magnetic field gradients, a spatially encoded signal is produced that can be detected and translated into images. 當射頻脈沖與磁場(chǎng)梯度聯(lián)合起來(lái)時(shí)，我們可以探測到一個(gè)空間編碼信號的產(chǎn)生并且將它轉變成圖像。
- Pulse width modulation (PWM) is an analog signal level for digital encoding. 脈沖寬度調制（PWM）是一種對模擬信號電平進(jìn)行數字編碼的方法。
- In these nonuniform fields the coil voltage caused by the excitation of an RF pulse rapidly decays to zero, but it can be recovered some time later by applying a second pulse. 在不均勻磁場(chǎng)內，射頻脈沖導致的電波很快會(huì )消失，但如果隔一段時(shí)間后再提供第二次脈沖，又會(huì )重新出現。
- Position control of d. c. motors has been done by means of pulse width modulation. 直流電機位置用脈沖寬度調制法控制。
- The control mode has developed from early U\f control mode to vector control technology and pulse width modulation. 控制方式也從早期的電壓;頻率控制方式發(fā)展到向量控制技術(shù)和沖寬度調制技術(shù)。
- For example, when a surface coil is used to transmit a rectangular RF pulse into a uniform water phantom, the amplitude of the B1field can vary by several-fold across the imaged object. 比方說(shuō)，當一個(gè)表面線(xiàn)圈向均勻的水介質(zhì)發(fā)射矩形射頻脈沖的時(shí)候，B1 場(chǎng)的振幅有可能在成像物體的不同部位發(fā)生很大的差異。
- High-speed on-off valves are used and controlled with pulse width modulation (PWM) in this system. 系統應用高速開(kāi)關(guān)閥，用脈寬調制(PWM)的方法進(jìn)行控制。
- The inverse control method for pulse width modulation (PWM) inverter-fed induction motors is discussed. 摘要針對電壓源型逆變器供電的感應電動(dòng)機，應用逆系統理論提出了一種新型控制策略。
- And a trapezoidal pulse voltage source with the pulse width nearly equal to the line delay. 因負載端去耦合電容含線(xiàn)頭電感所產(chǎn)生之效應。
- The wider the pulse width, the narrower the band width in the spectrum and vise versa. 脈波之波寬越寬，其頻譜之頻寬越窄，反之亦亦然。脈波迴旋積之次數越多，其結果越近似于高斯波形。
- It can also simulate the speed about distance changing and adjust the pulse width of echo signal. 此外，本目標回波距離處理器還可以仿真距離變化速率，調節回波脈沖的寬度。
- Therefore, we use unipolar switching pulse width modulation scheme to realize a filterless Class-D power amplifier. 因此，我們利用單極性切換脈波寬度調變技術(shù)去實(shí)現無(wú)濾波器之D類(lèi)放大器。
- The result has dedicated that it could satisfy the process of PECM in high frequency,narrow pulse width and high-power. 實(shí)驗結果表明,這種高頻脈沖電源在高頻、窄脈寬、大功率等方面均能滿(mǎn)足該工藝的要求。
- The relation between the FWHM pulse width and the root-mean square (RMS) pulse width is studied in theory. 利用理論推導的方法，給出了超短洛侖茲脈沖均方根脈沖寬度與半高全寬脈沖寬度的關(guān)系式。
- Under the same heating voltage and pulse width, a larger width of the microheater led to faster bubble growth. 加熱條件相同的前提下，微加熱元寬度越大，氣泡成核所需的時(shí)間越短、微氣泡生長(cháng)速率越快；
- Studies on the Compression of Electrooptical Q-switched Cr:LiSAF Laser Pulse Width by SBS Phase Conjugator[J]. 引用該論文 葛傳文;張為俊;陳長(cháng)水;王沛;陶德杰;蘇紅.
