方形波調制器 的英文怎麼說

中文拼音 [fāngxíngbōdiàozhìqì]
方形波調制器 英文
square-wave modulator
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 方形 : square; tetragonum
  1. This paper presents a method that chopping wave is done by switch devices which consist of three - level resistance regulating module and intelligence power module ipm, and which realizes constant - current discharge of storage battery. to achieve the intelligence control of the drive protection and the discharge process of ipm, the paper designs circuit formed by igbt threshold drive pulse pwm signals. ipm fault - blocking protection circuit and microcomputer 80c196. the devices can accurately control the 0 ~ 150a discharge current and the discharge time of the storage battery and calculate the releasing power

    實現蓄電池恆流放電過程智能控制是蓄電池放電裝置發展的必然趨，本文提出了一種通過三極電阻調節模塊和由智能功率模塊ipm為開關器件進行斬波從而實現蓄電池恆流放電的方法。為達到對ipm的驅動保護和放電過程的智能控制，文中設計了igbt門極驅動脈沖pwm信號形成電路和ipm故障封鎖保護電路及由單片機80c196為核心的微機控制器。本裝置能夠對蓄電池進行0 150a放電電流及放電時間的精確控制及釋放容量的計算。
  2. This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions

    首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。
  3. With the existing condition, the bar waveguide on the lithium niobate wafer with liquid phase proton - exchanged method has been fabricated and the benzoic acid is used as the proton source. a series of research on the domain inversion in lithium niobate crystal with proton - exchanged method have been done. and then the operation and the process of domain inversion in lithium niobate crystal with proton - exchanged method has been used

    實驗方面，利用實驗室現有條件，在鈮酸鋰晶片上以苯甲酸為質子源，用液相質子交換法製作了條形波導;對用質子交換法實現鈮酸鋰晶體疇反轉進行了一系列實驗研究，在此基礎上提出了質子交換法實現鈮酸鋰晶體疇反轉的工藝過程，實現了疇反轉並腐蝕得到了v型槽;設計製作了帶尾纖的電光相位調制器，最後進行封裝。
  4. To reappear stochastic waveform on esvrst in time field, the minimum variance implicit self - tuning regulators of siso and mimo systems are deduced based on carma models in this paper. the robustness of the regulator being used to control esvrst is validated good

    本文推導了在時域內對電液伺服道路模擬試驗臺進行隨機波形再現控制時，基於carma模型的，單輸入單輸出系統和多輸入多輸出系統的，隱式最小方差自校正調節器。
  5. With the strong dsp as the control unit, the design of main circuit structure is provided, and the control policy for the main circuit loop, the tuning of the triggering angle for thyristor are given

    在具體的系統實現中，變換器主迴路選擇環流控制方式，採用高性能dsp作為模糊控制核心，通過加權平均判決的模糊決策演算法對變換器主迴路晶閘管的觸發角進行調制，從而有效控制輸出電壓波形。
  6. Realization of the wide - band shaping filter in baseband is carefully analyzed, and then a low - cost realization method is brought forward. furthermore, through shaping filters, i / q route self - synchronization and compensation and revise of the nonlinearity and the imbalance of amplitude and phase of the modulation circuits are advanced

    分析了基帶寬帶數字成形濾波器的實現難點，提出了低代價的實現方法，並利用成形濾波器解決了調制端i / q自動同步，調制電路的各種非線性和幅相不平衡的補償校正等問題。
  7. According to the mechanism characteristics of the ac motor, with zero - voltage switching technology, the pdm converter mathematical models both the pwm and rectangular wave control mode are given in this paper. and the voltage and current harmonic analysis and the simulation waveforms of the output voltage, current and power are also described respectively

    根據交流電機在恆轉矩區和恆功率區的特性，結合零電壓開關技術，分別給出相應的脈寬調制控制（ pwm ）方式和方波控制方式下的高頻交流脈沖密度調制變頻器的數學模型，電壓和電流的諧波分析以及輸出電壓、電流和功率的模擬波形。
  8. Unlike inverters for general purpose, auxiliary inverters of subway vehicle have the characters of high power, wide range of high dc input voltage, entirely sealed electronic units and natural cooling. single pulse width modulation ( pwm ) technology is found to be optimal by comparing several different high power inverter technologies and is utilized in the 2 - channel staircase inverter discussed in this thesis

    針對地鐵車輛輔助逆變電源的大功率、直流側輸入電壓高且變化范圍寬、輸出電壓穩定且波形質量高，電子部件全密封且要求自然冷卻的特點，分析比較了幾種大功率逆變器技術方案，選擇單邊脈寬調制階梯波合成逆變器為研究對象。
  9. Aim at the development of the software radio in generalization, standardization and modularization, a waveform synthesis solution based on direct digital frequency synthesis is developed

    針對國內外軟體無線電技術對通用、標準、模塊化的硬體平臺的需求，本文提出了一種基於直接數字頻率合成原理進行信號數字域調制的波形合成器設計方案。
  10. Traditional inertial mechanized - platform uses velocities to damp the system attitude to improve the precision of attitude, when the system acceleration is small. referring to the idea, this paper designeda damp kalman filter in strap - down attitude heading reference system ( ahrs ). the new method makes use of 3 - d accelerometer ' s measurements to estimate the system attitude, which is measured to compensate attitude errors. because the acceleration affected the precision of fiher directly, the fuzzy adaptive system was presented. the fuzzy logic inputs are three accelerations and the output is to control the measurement noise covariance matrix. simulations and experimental results prove that the damp algorithm can damp most of schuler oscillation and foucauh oscillation, so that to assure the filter convergence and efficiently improve the precision of strap - down ahrs

    在系統機動性不強的情況下，傳統的平臺內阻尼演算法將系統本身的速度信息通過阻尼網路加到系統中，達到提高姿態角精度的目的.將這種平臺內阻尼的思想引入到捷聯慣性航姿系統中，在系統加速度較小的情況下，利用加速度計的輸出估計系統姿態角，通過卡爾曼濾波的形式補償系統姿態誤差.由於加速度的大小直接影響濾波器精度，本文設計了模糊自適應卡爾曼濾波演算法，根據三軸加速度計的輸出調整內阻尼量測誤差方差陣，從而避免了濾波器的發散.模擬和實驗驗證，內阻尼演算法可明顯抑制舒勒周期振蕩和傅科周期振蕩，避免了系統姿態漂移，有效提高了捷聯慣性航姿系統的精度
  11. Although dm can also solve the modulation time error, but the output waveforms can ’ t reach the industrial standard ( total harmonic distortion thd ). considering this, a new control strategy called current optimal control ( coc ) is presented in paper. coc is that system samples the output value real time, comparing with expected value, considering all switching actions available then draw a concluding to decide which way would be fastest and best way to render system smooth

    針對這一缺點，本文提出了一種更好的控制策略，電流最優delta調制，它是在電流滯環控制的基礎上，根據電路的輸出信號來分析，考慮所有可能的逆變器動作來決定選用哪一種開關轉換方式能最快最平穩地達到預期值，採用的是一種電流預測控制手段，從而使輸出波形的紋波最小。
  12. The specific route is as follows : firstly, the output signals from the multipath sensor are nornalized, i. e., all sensor signals ( including the analog data ) are transformed into multipath square wave pulse signals to form multipath parallel condition codes. these codes are treated as input signals for dac to obtain a series of dispersed analog signals for output as input signals for the vco. finally, a high frequency modulation signal is conducted at the vco ' s output

    具體技術路線如下：先將由多路傳感器輸出的信號進行歸一化處理，即將所有傳感器信號（包括模擬量）轉換成多路方波脈沖信號，以形成多位并行信號的狀態碼，將其作為dac的數據輸入信號，從而得到一系列離散的模擬信號輸出，作為vco的輸入信號，最終在vco輸出端形成高頻的調制信號。
  13. Therefore, it has been widely used in the domains of communication, radar, navigation, etc. this article focuses on the generating of the function waves which include sine wave, triangle wave and square wave, depict the concepts of dds ( direct digital synthesis ) and surveying frequency on equal precision, analyze the key techniques in the development and present solutions of function generator. author also present the system structures of hardware and software, discuss the performance indexes and consider the possibility of the system. finally, with respect to the problems in debugging and testing process, author do some analyzing and present the practical solutions

    本文主要圍繞函數發生器輸出的正弦、三角和方波三種基本波形的產生這一課題來展開，闡述了其中的直接數字合成（ dds ） 、等精度測頻等概念;分析了研製函數發生器所需攻克的關鍵技術，提出了技術解決途徑;對方案軟體進行編制和系統進行設計、安裝調試，實現了課題功能;最後針對調試中出現的問題，進行了較深入的分析，並提出了實際的解決措施。
  14. For the direct current decouple controller, the p1 adjustor ? parameter of current and voltage loop ? is designed. the correction of the designed parameter is testified by simulating on two phase synchronization coordinate and three phase stationary coordinate, the simulation wave is given

    對直接電流解耦控制器的電流環和電壓環的pi調節器參數進行了設計，並通過在兩相同步坐標系與三相靜態坐標系的模擬驗證了設計參數的正確性，同時也驗證了直接電流解耦控制方案的可行性，給出了模擬波形。
  15. The origin and evolvement of cuk converter are introduced and the voltage and current waveforms of every period are analyzed and presented. the state differential equations of ideal cuk converter are deduced and the simulation models of ideal cuk converter, ac power supply and pulse width modulator ( pwm ) are erected

    論文介紹了cuk型dc / dc變換器由來、演變；分析了各個環節、期間的電壓、電流的變化情況及波形；推導了理想cuk變換器的狀態方程；建立了cuk主電路以及相關交流電源、脈沖寬度調制器的simulink模擬模型。
  16. We introduced particularly a series of methods for improving reliability, disturbance resistance, scanning scope and location precision, such as : using modulate laser, designing bandpass filter, zooming out signals and using a special circuit to get rid of disturbances. after that, the effective signals enter into the spring - circuit and touch off it, then the data register lock the codes, so the codes are read into single chip and are sent to the computer for the location. finally, many experiments about disturbance resistance, scanning scope and location precision have been done

    為了提高導航定位系統的可靠性、抗干擾性、掃描范圍及定位精度，使其具有良好的穩定性，而採取了一系列技術措施，包括：採用調制激光信號；設計帶通濾波器和信號的整形處理電路；採用門限技術剔除干擾；並採用單片機系統對採集到的各類信號進行綜合處理與管理；建立了基於合作路標的位置計算方法和數學模型，實時通過串列通訊送到上位機，以便上位機對數據進行處理，從而進行定位計算。
  17. After comparing several analog and digital generation methods of lfm signal, this paper confirms the system scheme as direct digital synthesis plus quadrature modulation. combined with agilent arbitrary waveform generator and phasor signal generator, a generation system is established and a ultra - wideband signal, whose bandwidth is 1ghz and carrier frequency is 4ghz, is generated

    通過對幾種模擬與數字線性調頻信號的產生方法的比較，本文採用了以直接數字波形合成（ ddws ）加正交調制的系統方案，並結合實際的儀器設備，產生了帶寬為1ghz ，載頻4ghz的超寬帶線性調頻信號。
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