该系统采用单极性调制的SPWM方式，根据DSP芯片的各类资源给出了一套具体的数字化实施方案。
With single polar SPWM(Sine Pulse Width Modulation), the whole solution of hardware and software is presented based on the resource of the DSP controller chip.
针对电压源型空间矢量脉宽调制逆变器的死区效应，提出了一种根据电流矢量判断电流极性的死区补偿方法。
Aimed at dead time effect of voltage-fed space vector pulse width modulation (SVPWM) inverter, a novel compensation method detecting current polarities from the current vector was presented.
介绍了一种使用单片机8031在线实现三相单极性调制的TPWM波形的方法。
This paper introduces a method of using chip microcomputer 8031 to generate triphase, single polar and modulated TPWM waveform with online.
分析了40%氧化乐果乳油稳定性差的原因，提出了减少乳油中极性物质含量和科学调制乳油的方法。
The reasons of stability of 40% omethoate EC have been analyzed, methods of reduction of the polar materials content in EC and scientific formulation of EC were provided.
对结果的分析讨论表明，非对称微带电极用于极性反转电极结构对在高频波段实现低驱动功率光调制是十分有效的。
For high-speed and low-drive -power light, modulation, the advantages of the use of asymmetric strip line was shown.
本文以铁道信号电源为背景，研究了一种单极性调制的逆变电源。
Based on the power supply for railway signal system, this dissertation investigates an inverter controlled by the strategy of unipolar modulation.
本文对双极性调制的无刷直流电动机仿真分析了转速和调制频率对转矩影响同时给出仿真结果。
This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given.
本文对双极性调制的无刷直流电动机仿真分析了转速和调制频率对转矩影响同时给出仿真结果。
This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given.
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