The servo systems compare the feedback signal with input instruction, then convert the difference into compensatory instruction so to control the output component.
伺服系统将检测信号和输入指令进行比较，将差值转化从而控制输出元件。
The system can realize traffic signal control to signalized intersection with difference signal phase and coordinated control of traffic signals.
该系统能对不同相位的信号交叉口的信号进行控制，同时具有信号的协调控制功能。
The difference of output voltage of inverter and 220v is set as control signal, controller change the PWM signal to regulate buck-boost converter and three-phase rectifier.
以逆变器输出的电压和220v的差值作为控制信号。设计控制器根据控制信号改变直流变换器和三相可控整流的PWM控制信号。
The circuit of Photoelectricity Weak Signal Detection, preamplifier circuit, difference circuit, modulation circuit, optical source thermal control and current drive circuit etc. are designed.
设计实现了基于差分后谐波检测的微弱信号处理电路、前置放大电路、差分电路、调制电路和光源温度控制电路及电流驱动电路等。
The maintenance locking cocurrent control voltage provides by the discriminator, therefore between the discriminator two input signal leaves leeway certain phase difference.
维持锁定的直流控制电压由鉴相器提供，因此鉴相器的两个输入信号间留有一定的相位差。
The maintenance locking cocurrent control voltage provides by the discriminator, therefore between the discriminator two input signal leaves leeway certain phase difference.
维持锁定的直流控制电压由鉴相器提供，因此鉴相器的两个输入信号间留有一定的相位差。
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