srd 中文意思是什麼

srd 解釋
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  1. The basis idea of software radio ( srd ) is to place the a / d and d / a close up the antenna as possible as and use software to realize all the function of any radio based on an opening and blocking currency hardware platform

    軟體無線電的基本思想是將寬帶a / d及d / a盡可能靠近天線，將無線電臺的各種功能在一個開放性、模塊化的通用硬體平臺上盡可能多的用軟體來實現。
  2. The channelized digital receiver based on srd is the electronic equipment, which can be used in communication and military affairs, because of its excellence on wide band frequency coverage, digital processing, software programming, high dynamic range, receiving signal with all probability, simultaneous signal detection and so on

    基於軟體無線電思想的通道化數字接收機是一種即可用在通信領域也可用在軍事領域的電子設備，具有大帶寬、數字化、軟體化、大動態范圍、全概率接收、多信號同時處理等優點。
  3. In the active circuit part, based on the theories of multiplier of srd and fet, we have designed the circuit of x band 6 multiplier and ka band tripler. then they are simulated and optimized using harmonic balance method. furthermore, the results of optimization and experiments are analyzed

    在有源電路部分，我們介紹了階躍管、 fet倍頻器的基本原理，在此基礎上分別設計了兩個倍頻器電路，然後利用諧波平衡法進行了模擬，並對模擬、測試結果作出了比較。
  4. Supply chain pattern is studied in trading, it is an important way that strengthen core competence of srd company

    研究srd公司在商貿流通領域的供應鏈關系模式，是增強公司競爭力的重要途徑。
  5. The basic working principles and characteristics of srm will be described firstly in this paper, as well as its developing survey and researching directions. and then the srd system will be separated into several function parts to be introduced respectively in details : ( 1 ) to analyze the basic characteristics of the srm including electromagnetism, current and torque of every angle field of the rotor based on the subsection - linearized inductance characteristics of stator windings and several idealized supposes. ( 2 ) how to design and realize the h - bridge converter, and the method to use it ; ( 3 ) how to design and realize the controller based on dsp ( tms320f240 ) and the control strategies, as well as the program ; ( 4 ) to introduce the monitor program running in a pc, which is programmed by delphi

    本文首先介紹了srm的基本工作原理和特點以及srd系統發展概況和研究方向，然後以srd的功能構成為線索分部分進行介紹： （ 1 ） srm的特性及控制策略分析，在電感分段線性化等簡化條件下分析得出了各個轉子位置角度區間的電磁、電流和轉矩特性並分析了控制策略； （ 2 ）分析設計了h橋式功率變換器的設計和工程實現的方法，並設計了基於這種功率變換器的換相邏輯； （ 3 ）分析設計了以dsp為核心的控制器以及控制方法，並介紹了該控制器的軟硬體實現； （ 4 ）介紹了如何用delphi編制實現上位機監控程序。
  6. The other is supported by emerson network power co., ltd as an advanced research project. and this paper mainly introduces how to design and realize a four - quadrant running srd system to control a 3kw srm ( 8 / 6 poles ) based on a dsp ( tms320f240 ), which uses h - bridge power convertor and power - consumption braking method

    本文基於省重點科研項目「開關磁阻電機新型控制及其調速系統」和深圳emerosn網路能源公司預研部項目，分析討論了如何設計實現一套以3kw的四相（ 8 6極） srm為控制對象以dsp為控制核心採用h橋式功率變換器和能耗制動方式的四象限運行srd系統。
  7. As a new kind of motor, switched reluctance motor ( srm ) has a doubly salient structure, and its windings are only mounted on the stators. these characteristics bring srm lots of virtues : solid structure, high reliability and efficiency, good fault - tolerance, low cost etc. switched reluctance driver ( srd ) combined srm with modern power electronic technology and control technology

    開關磁阻電機（ srm ）作為調速電動機的新品種，採用定、轉子雙凸極鐵心結構，並且只在定子上裝有集中繞組，轉子上無繞組或永磁體，具有結構簡單堅固、運行可靠、效率高、功率變換簡單、容錯性好和成本低等優點。
  8. Finally according to debugging of hardware circuit, control of switched reluctance drive based on dsp is attempted. it provides some references about the development of digital circuit applying in srd

    最後通過硬體電路調試，初步嘗試用dsp控制srd ，為以後由模擬控制向數字控制的發展提供了一些參考。
  9. In the design of the spll, srd takes the input of a crystal oscillator and generate very sharp and narrow pulses

    在振蕩器之後，本文加了一個緩沖放大器，它起到放大輸出功率和改善頻率穩定度的作用。
  10. In order to minimize the torque ripple of srd, the dissertation further design the intelligent torque control system, introduce the instantaneous torque control strategy based on torque distribute function, which is implemented by the flux linkage controller of srm. furthermore, considering the multi control parameter, the article also found the rotor position angle controller based fuzzy logic so as to optimize the whole control system and effectively reduce the torque ripple

    為了降低srd系統的轉矩脈動，本文在所建模型的基礎上，設計出智能化轉矩控制系統，利用轉矩分配函數，提出瞬時轉矩控制策略，同時採用磁鏈控制器來實現；考慮到srd具有可控參數多的特點，本文同時建立了優化轉子位置角的模糊控制器來達到智能化轉矩控制的目的，從而有效抑制sr電機的轉矩脈動。
  11. In research of controlling system about the switched reluctance motor system ( srd ), there are two prominent problems, one is that it is difficult to set up accurate mathematical model of srm due to serious nonlinearity caused by double - salient structure, the other is that the previous schemes of srd are always equipped with rotor position sensor, which determines the system ' s high speed performance, reliability and cost. as a result, how to detect the position of non - position sensor rotor has become one major direction in the study o f srd

    其中較為突出的問題是： 1 ）由於sr電機的雙凸極結構，電機模型具有嚴重的非線性，使得建立sr電機的數學模型非常困難； 2 ）轉子位置傳感器的存在影響了電機控制系統的高速性能、可靠性和成本，所以研究無位置傳感器轉子位置檢測技術（或間接位置檢測技術）是開關磁阻電機系統（ srd ）系統研究的重要課題之一。
  12. Speed regulation by pwm voltage regulation of srd

    調壓調速
  13. All these works guide the design for converter of srd

    通過模擬分析，證實了系統運行的可行性。
  14. The paper involved srm s maths model, velocity - control theory and feedback - signal - check technique. according to srd s main technical demand, srm s raw data and srm s control theory, the main system was divided into several modules. based on the modules, by selecting proper components and calculating right parameters, in parallel with the sample machine s experiments, the cotroller s design was completed and the system completely meet the demands

    根據開關磁阻電動機驅動系統的主要技術要求和開關磁阻電動機的原始數據以及控制理論，將2 . 2kwsr電動機控制器系統的設計劃分為幾大功能模塊，進而通過系統元器件的選型和參數計算，結合樣機試驗，完成了對2 . 2kwsr電動機控制器系統的設計，並達到功能要求。
  15. This thesis makes some studies in the aspect of srd ' s control parameter optimization, improvement of control strategy and research of stator vibration of sr motor. moreover, some conclusions are obtained

    在srd的控制參數優化、控制策略改進以及sr電機的定子振動分析方面做了一些研究工作，得出了一些結論。
  16. Switched reluctance motor ( sr ) is a new - type drived - electromotor system which develops rapidly since 1980. the structure of the srd is simple

    開關型磁阻電動機驅動系統（ switchedreluctancemoter ，簡稱sr電動機）是20世紀80年代迅猛發展起來的一種新型調速電機驅動系統。
  17. A way to reduce torque ripple of srd is put forward on the basis of these conclusions, and the method is verified very effectively and practicably by experiments

    在此基礎上提出了一種減小轉矩脈動的實驗方法、控制策略，並通過實驗驗證了該方法的有效性、實用性。
  18. Pseud - sliding mode control in srd is lucubrated, the control law and the switch function of variable - structure control system with sliding mode ( vss ) are designed, the choice of the parameters of pi control and the theory of the combination control are discussed

    實驗結果表明準滑模變結構控制策略具有良好的動態性能和穩態性能，同時可以削弱傳統滑模控制的抖振影響，驗證了理論分析和數字模擬的正確性。
  19. Now it has been used in many fields, such as transportation, aeronautics, electronic household appliances and industries. the modelization and simulation of srd, pseud - sliding mode control ( psm ) and the driver system based on dsp tms320lf2407a are studied in this thesis. the main tasks include : the nonlinear model of the srd is established, the control methods such as pwm is emulated and analyzed

    開關磁阻電機調速系統（ srd ）將開關磁阻電機，現代電力電子變換技術以及控制技術結合為一體，兼有異步機變頻調速系統和直流電機調速系統的優點，目前已應用於牽引運輸、航空航天、家用電器、通用工業等各個領域內，具有廣泛的應用前景和強大的市場生命力。
  20. The simulation results show that the improved control method has some excellent features, such as high accuracy and robustness. in the end, a single neural cell self - adaptive controller is studied ; furthermore, a control system of srd based on the single neural cell self - adaptive controller is designed by using 80c196kb microprocessor

    本文還對單神經元自適應pid控制演算法進行了研究和模擬，並將該演算法應用於sr電機調速系統中，以80c196kb單片機為控制器，對于該調速系統進行了軟、硬體的設計。
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