magnetic modulation 中文意思是什麼

magnetic modulation 解釋
磁性調制
  • magnetic : adj. 1. 磁（性）的；（可）磁化的。2. 吸引人心的；有魅力的。3. 催眠術的。
  • modulation : n 調整，調節；（聲調的）抑揚，變化；【音樂】轉調，變調；【無線電】調制。 amplitude modulation 振...
  1. Pulse frequency modulation magnetic tape record type strong - motion instrument

    脈沖調頻式磁帶記錄強震儀
  2. The second, at the high frequency primary coil, when switch turn on with control signal ( the spwm pulse is modulated ), in the positive or negative semi - period of low frequency modulation signal, transformer coil with same direction voltage. the magnetic flux of transformer core will increase step by step. at the end, it leads to magnetic flux saturation

    二、在高頻變壓器原邊，當開關管接收控制信號脈沖列（經調制的spwm波列）導通時，在低頻調制信號的正半周或負半周內，施加在變壓器繞組上的是同一方向的電壓，變壓器磁芯中的磁通可能將級進地逐漸增加，導致磁芯飽和，造成磁偏或單向磁化，導致低頻電信號放大失真或由於很大的磁化電流而無法正常工作。
  3. The operation of the proposed system is thoroughly analyzed and how to control modulation ratio meets each pulse magnetic reset is deduced

    對如何通過控制調制比使高頻變壓器能滿足逐個脈沖磁復位進行了數學推導。
  4. The magnetic reset by each pulse is proposed in this paper. that is how to control modulation ratio and let the increase of magnetic flux with each high frequency pulse reset to zero. so it will avoid magnetic flux saturation

    本文採用逐個脈沖磁復位技術，就是在每個高頻脈沖之後及時採取措施，使每一個高頻脈沖引起的磁通增加都回復到零，從而避免磁芯磁通飽和。
  5. Using the modified method, 6 kinds of tl topologies of single - switch converter are obtained. the deep research reveals that these tl topologies can have less value of the inductor by using interleaving modulation strategy compared with conventional modulation strategy on the condition that the current ripple of the inductor are the same. some drawbacks such as high voltage stress, difficulty of realizing soft - switching, and magnetic aberration were presented in the conventional push - pull converter

    對基本方法進行改進，提出了適合6種單管直流變換器的三電平拓撲變換方法，成功地得到了其三電平拓撲，開關管的電壓應力降為原來的一半；經過對這些三電平拓撲控制策略的深入研究，詳細論述了交錯開關方式可以最大幅度地減小電感的電流脈動，從而可以在電流脈動要求相同的情況下減小電感的設計值。
  6. Information processing - data interchange on 130mm flexible disk cartridges using modified frequency modulation recording at 13262 ftprad, on 80 tracks on each side - part 1 : dimensional, physical and magnetic characteristics

    信息處理數據交換用130mm改進調頻制記錄的位密度為13262磁通翻轉弧度每面80條磁軌的軟磁盤第一部分:尺寸物理性能和磁性能
  7. Information processing systems - data interchange on 90mm flexible disk cartridges using modified frequency modulation recording at 15916 ftprad, on 80 tracks on each side - part 1 : dimensional, physical and magnetic characteristics

    信息處理數據交換用90mm改進調頻制記錄的位密度為15916磁通翻轉弧度每面80條磁軌的軟磁盤第一部分:尺寸物理性能和磁性能
  8. Pulse duration modulation magnetic tape record type strong - motion instrument

    脈沖調寬式磁帶記錄強震儀
  9. The design of excitation power source based on principle of three phase step motor and pulse width modulation ( pwm ) technology, intelligent power model ( ipm ) is used for inverter switches, the output ac pulse used as excitation signals. the speed of rotation and magnetic intensity can be changed by regulate the exciting converted frequency and magnitude of exciting current. constant current is achieved by closed loop feed back

    勵磁電源結合步進電機原理與脈寬調制技術，選用智能功率模塊ipm作為逆變開關器件，輸出交流脈沖勵磁信號，以調節勵磁轉換頻率和勵磁電流大小為手段，實現對磁場旋轉頻率和磁場強度大小的有效調節，並通過閉環反饋實現閉環恆流控制。
  10. The more poles mode, the unequal pole width mode ; the low - frequency slot harmonic modulation mode and the mode of changing end magnetic conductance are presented, and these designing method can efficiently weaken the end effect and decrease the wave of the thrust

    提出的採用多極電機方式；初級與次級極距不等的方式；齒諧波低頻調制方式和改變電機兩端部磁導的方式等電機的設計原則和方法，都可有效地削弱端部效應，減小推力的波動。
  11. Besides, the motor control system based on the digital signal processor ( dsp ) is analyzed. the hardware circuit about the dsp system is designed. the dsp control software is programmed on the field magnetic orientated control and the space vector pulse width modulation ( svpwm ), that establishes the ' basis for implementing the modern control principle

    然後，又對基於數字信號處理器（ dsp ）的電機控制系統進行了分析，設計了dsp系統的硬體電路，並編寫和調試了空間磁場定向控制和空間矢量脈寬調制（ svpwm ）的dsp系統的軟體，為直線電機現代控制策略的具體實現奠定了基礎，並提出了對端部效應進行補償的控制方法。
  12. The develop of in sulation monitor on dc system by magnetic modulation

    磁調制式直流系統絕緣檢測裝置的研製
  13. In the first stage, due to the research in years on the magnetic field modulation type doubly fed brushless machine, two doubly fed generators was requested to fabricate

    首先，利用我們研究所在磁場調制式無刷雙饋電機的多年研究成果，研製並測試兩臺無刷雙饋發電機。
  14. 5. 25in. guide to construction and use of 130 mm 5. 25 in flexible disk cartridges for data interchange, using modified frequency modulation recording at 13 262 ftprad, on 80 tracks each side - dimensional, physical and magnetic characteristics

    使用13262次磁通變換弧度在每側80磁軌上調頻錄制的數據交換用130mm
  15. Information processing. data interchange on 200 mm flexible disk cartridge using modified frequency modulation recording at 13262 ftprad on two sides. dimensional, physical and magnetic characteristics

    信息處理.在200mm 8in軟磁盤上利用修正的頻率調制以13 262ftprad錄制在兩面上的信息交換.尺寸特性.物理和磁特性
  16. In the design of real - time control system, the paper takes three - phase full - bridge mosfet inverter as the real - time control main circuit, and adopts a control scheme with 120 ? switching mode combined with half - bridge pulse width modulation ( pwm ), which would avoid straightthrough short of a certain bridge. phase current is detected by single current sensor ; three - phase position signals generated by position sensors could not only supply commutation information for inverter, but also be used for speed detecting based on signals " period measurement, which makes the speed sensor unnecessary. the whole control system adopts speed and current dual closed - loop control strategy in order to construct a high performance rare - earth permanent magnetic brushless dc motor ( repm bldcm ) full - digital real - time control system

    在實時控制系統的設計中，本文以三相全橋mosfet逆變電路作為實時控制主電路，採用120導通方式結合半橋pwm調制的控制方案，從而有效地避免了橋臂的直通短路；本文用單電流傳感器實現對相電流的檢測，來自位置傳感器的三相位置信號不僅為逆變電路提供換相信息，而且也用於基於信號周期測量的轉速檢測，這樣就省去了速度傳感器；系統採用的是速度、電流雙閉環控制策略，力求構建高性能的稀土永磁無刷直流電動機全數字實時控制系統。
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