Electromagnetic flowmeter adopting three-value trapezoidal waveform exciting mode is proposed in this paper.
提出了采用三值梯形波励磁方式的电磁流量计设计。
The out-put waveform of a three-phase PWM inverter for the trapezoidal modulation signal is investigated both theoretically and experimentally.
对梯形调制信号的三相pwm逆变器输出波形从理论和实验两个方面作了研究。
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