A design method of the dielectric - covered slots arrays in the narrow face of a rectangular wave - guide is presented in this paper 本文提供了帶共形罩矩形波導(dǎo)窄邊縫隙天線陣的一種設(shè)計方法。
On the designed system , make experiments on calculating the harmonics of rectangular wave and power supply signal . the correctness of design is proved by experiments 在研制的系統(tǒng)上,進行了計算輸入信號為方波和動力電源信號時的諧波大小的實驗,實驗結(jié)果表明了研制成果的正確性。
Furthermore , the development of electromagnetic flowmeter with low frequency rectangular wave excitation is finally selected as the emphasis of research through analyzing the advantages and disadvantages of the different kinds of electromagnetic flowmeters 電磁流量計的設(shè)計分析了不同種類的電磁流量計的優(yōu)缺點,最終選擇低頻矩形波勵磁電磁流量計為研究重點。
Simultaneouslydesigned one has planted the zero examination electric circuit , transformed the pid control increase cheng zhankong compared to , andoutput with the digital circuit has certainly occupies emptiescompared to the rectangular wave , achieved the quite accurateexamination effect 同時設(shè)計了一種過零檢測電路,將pid控制增量轉(zhuǎn)換成占空比、并用數(shù)字電路輸出有一定占空比的矩形波,以達到比較準(zhǔn)確檢測效果。
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(jù)交流電機在恒轉(zhuǎn)矩區(qū)和恒功率區(qū)的特性,結(jié)合零電壓開關(guān)技術(shù),分別給出相應(yīng)的脈寬調(diào)制控制( pwm )方式和方波控制方式下的高頻交流脈沖密度調(diào)制變頻器的數(shù)學(xué)模型,電壓和電流的諧波分析以及輸出電壓、電流和功率的仿真波形。