A novel control method is proposed in this paper, namely six-phase motor trapezoidal wave phase current control.
针对多相电机控制模式复杂性的特点，本文提出一种新颖的控制方式：六相感应电机梯形波相电流控制。
Sometimes, owing to the limitation of specimens or testing conditions, etc., the measurement for the exact travel time of a wave phase is very difficult.
有时，由于样品和试验条件等方面的限制，准确测定波动的走时很困难。
With the complexity of the control of multiphase machines, a novel control method was proposed in this paper, namely six-phase motor trapezoidal wave phase current control.
针对多相电机控制模式复杂性的特点，提出一种新颖的控制方式：即六相感应电机梯形波相电流控制。
Non coherent demodulation for 2PSK detects relation of carrier wave phase of the interval symbol by the (half period of carrier wave) delay and the adder, then the data is demodulated.
PSK非相干解调法将经延时半个载波周期的接收信号与原接收信号相加，检测出两相邻码元载波相位变化情况，从而解调出数字信息。
Based on the algorithm, the value of transient Reyleigh wave phase velocity is closer to true wave velocity, so the resolving rate and the definition of the phase velocity are improved.
根据以上算法求得的相速度更接近瑞利波真速度，从而提高了相速度的分辨率和精确度。
From chapter three to chapter five, the three key components of the system: millimeter-wave phase locked sources, multiple frequency local source, low noise amplifier are designed and tested.
第三章至第五章分别介绍了毫米波锁相源、二倍频本振源和低噪声放大器三个系统关键的单元电路的设计过程和测试结果。
Phase shifter is a commonly-used component in microwave system. Its function is to make the passed electromagnetic wave phase shift, so it's very useful on the phase control and power synthesis area.
相移器是微波系统中的常用元件，它的作用是使通过的电磁波产生一定的相位移，因此它在微波相位控制和功率合成方面具有重要意义。
Phase shifter is a commonly-used component in microwave system. Its function is to make the passed electromagnetic wave phase shift, so it's very useful on the phase control and power synthesis area.
相移器是微波系统中的常用元件，它的作用是使通过的电磁波产生一定的相位移，因此它在微波相位控制和功率合成方面具有重要意义。
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