分频电路 meaning in English
counting down circuit
crossover circuit
divider circuit
frequency dividing circuit
frequency-halving circuit
Examples
- Used in speaker dividing network circuits
适用于音频网络分频电路。 - There is difference frequency measurement requirement for every part of pid regulating , difference between dynamic quality and static quality in response time and accuracy . according to these , it use the interrupt functions and high - speed counter of the simens s7 - 200 plc cpu226 basic unit and some peripheral circuit to measure frequency ; in software designed , the procedure frame of hydraulic - turbine governor and disperse process of parallel pid are analyzed , an improved pid algorithm is adopted to realize a pid regulation mode with variable structure and parameters ; the mechanical liquid - pressure system of the hydraulic - turbine governor is with electric - hydraulic converter unit of step motor . according to the drive character of five phase of response step motor , a variable frequency regulated voltage driver unit is designed in order to realize interface between plc and driver of step motor
本文利用s7 - 200plc自身的特点设计了频率测量单元，根据pid调节各个环节的特点，以及调速器动态特性、静态特性对频率测量的实时性和精度要求的不同，利用s7 - 200plc基本单元中内置的高速计数器以及相应的外围放大整形、分频电路，实现了水轮发电机组频率的测量；在软件上，对微机调速器的整个程序框架、并联pid的离散化过程进行了分析，选用改进的pid算法实现了变参数、变结构的pid调节模式；调速器的机械液压随动系统具有步进电机电液转换元件，采用五相反应式步进电机，根据其驱动特性设计了变频调压驱动器，实现plc与步进电机驱动器之间数字接口。 - Eddy - current sensor conversion circuit consist amplification circuit , band - pass filter circuit , demodulation circuit , differentiation phase and data sampling circuit . these circuits are used to convert the test signal of eddy - current sensor to discrete signal tend to process . the microprocessor system that formed of dsp chip is used to data fitting of test system , data displaying and data communicating with personal computer , etc . the interference questions of hardware design and the measure of eliminating interference signal in the subject are introduced in the last of this chapter
硬件电路的设计主要分三大部分来实现：激励源电路部分，由分频电路和频率合成电路组成，产生频率稳定的激励信号以确保检测任务的正常进行；传感器变换电路部分，由放大电路、滤波电路、检波电路、鉴相电路和数据采集电路组成，主要将电涡流传感器检测线圈检测到的信号变换成只含有被测信息的离散信号，易于后续电路处理；由dsp芯片构成的微处理系统，主要完成检测系统的数据拟合、显示及与主机通信等功能。 - The designs of the pfd , digital filter ocxo and fractional - n counter in the frequency synthesizer unit are discussed , based on the pll theory . in order to improve the precision of pll , some design methods of pfd are given , and its feasibility is validated by the fpga hardware implement
2 .在锁相理论指导下,第三章讨论了频率合成器设计中的鉴频鉴相器、数字滤波器、恒温压控振荡器和分频电路设计。为了进一步提高频率合成的精度,文中给出了提高鉴频鉴相器性能的一些设计思想,结合fpga的硬件设计验证了其可行性。