DDS (direct digital synthesis) is a sort of frequency synthesis technique, which has advantages such as short frequency conversion time, high resolution in frequencies, programmability and so on.
直接数字频率合成(DDS)技术是目前广为应用的一项频率合成技术，它具有频率转换时间短、频率分辨率高、可编程等特点。
Direct Torque Control (DTC) of induction motor based on DSP is new technology of high performance AC — frequency conversion — rate of regulation.
基于DSP的电动汽车用交流电机的直接转矩控制是电机高性能交流变频调速的新技术之一。
This direct conversion receiver can eliminate the need for intermediate frequency (IF) signal processing, as well as the corresponding requirements for image filtering and IF filtering.
这种直接转换接收器能够免除进行中频(IF)滤波的需要。
The 6kv transducer with the series-wound unit of the PWM pressure type can realize the output of the direct high pressure by collecting a lot of lower frequency conversion pressure.
单元串联多电平pwm电压源型6k V变频器采用若干个低压PW M变频功率单元串联的方式实现直接高压输出。
It adopts axle center type gas top, AC frequency speed adjusting, frequency conversion, DC direct current speed adjusting and electromagnetic braking.
为轴心式气顶、AC变频调速变频刹车DC直流调速、电磁制动。
A kind of xenon lamps stabilizer is designed which is made up of the tripper-circuit with two-leveled rising voltage and the direct current power circuit with frequency conversion mode.
设计了一种由两级升压触发电路及变频式直流电源电路构成的氙灯安定器。
We also choose the type of stable voltage direct current and frequency conversion motor, and design the hardware circuit of the sub-systems.
根据控制要求对直流稳压电源、变频器等其它硬件进行了选型，并对系统各部分硬件电路进行设计。
We also choose the type of stable voltage direct current and frequency conversion motor, and design the hardware circuit of the sub-systems.
根据控制要求对直流稳压电源、变频器等其它硬件进行了选型，并对系统各部分硬件电路进行设计。
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