It make it realizable to select 256 testing poits , and it also actualizes automatic gain control ( agc ) for different amplitude signals and optimizes the accuracy of signal collection 該電路可實現256路的信號采集,并對不同幅度信號實現自動增益控制,使信號采集的精度處于最佳狀態。
And an automatic gain control ( agc ) loop is introduced to keep the vibrating amplitude of dive tines invariable . it will effectively improve the linearity and robustness of the gyro . moreover , the configuration of the drive circuit is illustrated in detail 3 .設計了微陀螺諧振驅動控制系統,引入了自動增益控制環節,使驅動音叉振動幅值保持恒定,提高了微陀螺的測量線性度,增強了微陀螺的魯棒性,并且詳細介紹了驅動控制電路的實現方法。
2 . as for the intermediate frequency part in integrated circuits ( ic ' s ) , we introduce feedback automatic gain control ( agc ) loop in view of its fargoing dynamic range and convenient precision adjustment , hence stable power of fore - demodulator signal and maximum systematic gain are ensured 2 、中頻部分采用集成電路的反饋式自動增益放大環路,動態控制范圍大,控制精度調節簡便,是系統增益的最大來源,同時也保證了中頻解調器前信號的功率穩定。
The traditional methods of increasing the dynamic range of the receivers , such as sensitivity time control ( stc ) , automatic gain control ( agc ) , and band - pass intermediate frequency ( if ) limiting , are researched . it is pointed out the limitation of the traditional technologies in increasing the dynamic range in wideband digital ew ( 3 )研究了動態范圍的相關參數,分析了擴大接收機動態范圍的常規方法,如靈敏度時間控制、自動增益控制、中頻限幅器和對數放大器等,并分別指出常規方法應用于寬帶數字ew接收機的局限性。
Automatic gain control ( agc ) circuit is a kind of automatic control circuit . it can regulate the output - signal to some specified power level or limit it to a small range while the input - signal ’ s power level is changing sharply . it is very important in communication equipments , especially in the receiving part 自動增益控制( agc : automaticgaincontrol )電路是一種在輸入信號幅度變化很大的情況下,使輸出信號幅度保持恒定或僅在較小范圍內變化的自動控制電路;在通信設備,特別是通信接收設備中起著非常重要的作用。