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。
Starting from a new aspect, it explained a new way to realize energy saving without retrofitting DCS and control logic at site in the application of high voltage frequency conversion.
从全新的角度，诠释了高压变频在系统应用中不对DCS和现场控制逻辑改造，即可实现节能应用的一种新方法。
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