overmodulation 中文意思是什麼
overmodulation
解釋
超調變-
After carefully analyzed the principle of standard svpwm and traditional overmodulation methods, this paper proposed one simple and effective overmodulation scheme. experiments were carried out in one 1. 5kw induction motor and its results were recorded and analyzed by pz4000 power analyzer and the proposed scheme were proved to be effective. although there are many sensorless control methods for induction motor control, many of which are either too complicated or too sensitive to the motor ? parameter to be put into practice
在分析了標準svpwm演算法和常見各種過調演算法的原理的基礎上，提出了一種簡單有效的演算法滿足過調控制的要求，在1 . 5kw異步電機上進行了實驗並使用pz4000功率分析儀對其結果進行了準確測量與分析，證明了本文提出的svpwm演算法可以有效地提高電源電壓的利用率。 -
Explain the idea and theory of space vector modulation and overmodulation. the implementation of svm and the realization scheme are given
詳細介紹了系統的軟硬體設計，給出了電路原理圖和軟體模塊的設計原理和調用方法。 -
The theoretical analysis and result of simulation indicate that the two - phase modulation reduces the switching losses 50 % relative to the quasi - optimum and the space vector modulation and overmodulation can generate higher voltages with low total harmonic distortion
分析表明二相調制方法相對于準優化方法減少開關損耗近30 ，空間矢量的調制與過調制可以大大的提高直流母線電壓的利用率。 -
The numerical results of the dispersion relation show some nonlinear effects : for a fixed geometry of a waveguid, beam parameters and plasma density, the increment of the modulation parameter may lead to a slight increment of the operating frequency, however, as the modulation parameter increases further, saturation may occur and the dispersion relations are hard to be separated, it is due to the overmodulation of the microwave power, this phenomenon itself belongs to the nonlinear effects
對於一定的波導、電子注參量和等離子體密度值，等離子體調制系數的增加，使工作頻率略微升高。但是，隨著等離子體調制系數的進一步增加，色散曲線變得彼此之間不可分辨，可以認為是等離子體的過調制導致了柵的飽和。這一現象是非線性的，可見，等離子體柵和調制場中文摘要是非線性關系，等離子體柵是非線性j 。 -
This paper ? goal is to improve the performance of the electric vehicle ? drive system based on the existed schemes. limited by time, this paper focused on two research areas : ( 1 ) overmodulation scheme based on svpwm ( 2 ) speed sensorless control method
由於時間有限，本文所進行的研究工作主要集中在兩個方面： （ 1 ） svpwm過調控制的研究（ 2 ）無速度傳感器控制演算法的研究。 -
The simulation result indicates that the fuzzy controller makes the speed regulation system of shearer response quickly, small overmodulation, reliable performance and no dependence of model parameter, has strong robustness comparing to traditional controller
模擬結果表明：模糊控制器和傳統控制器相比，可使採煤機調速系統響應快、超調小，性能穩定可靠，並對模型參數不依賴，具有較強的魯棒性。 -
For big hysteresis control, response time is long and overmodulation is big, but dynamic performance figure is not good when we only use pi controller 。 so, i try to design the whole control project which composed of the vapor wraps water level control system and combustion control system use the control equipment of double cross - parameter fuzzy - pi controller
單獨採用pi控制，對大滯后控制，響應時間及超調很大，但動態性能指標差。因此，嘗試採用雙交叉參數fuzzy - pi控制器。組成了汽包水位和燃燒雙交叉參數自調整fuzzy ? pi組合控制器的整體控制方案。
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