Combining to devise radio telemetry receiver, the application of digital down converter and frequency demodulation in software radio is discussed and analysed.
结合无线电遥测接收机的设计，论述和分析了软件无线电技术中的数字下变频和调频数字解调技术在遥测接收机中的应用。
This paper describes an AC frequency conversion servo system which is composed of single chip and converter and designs a digital PID adjuster.
介绍了应用单片机和变频器组成的数字式变频交流伺服系统及数字PID调节器设计。
To introduce the application of fully digital AC frequency converter in the stainless steel cut to length line, describe its configuration, functions and control features.
介绍全数字交流变频调速装置在不锈钢横切生产线上的应用，说明其基本配置、功能和控制特点。
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