...补偿装置类技术资料 键控调制(QPSK)、自动频率控制(automatic frequency control，AFC)和自动相位控制(automaticphase control，APC)，以及天线驱动放大一体化设计和实现方案，该调制器包括由可编程数字QPSK/16-QAM调制器(11)..
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锁相系统是一个能够跟踪输入信号频率和相位的闭环自动控制系统。
The phase-locked system is a closed loop automatic control system that can follow the frequency and phase of the input signals.
提出了基于FPGA的无损伤切换的实现方案，并重点介绍了实现中采用的相位调整、弹性存储器和自动切换控制等关键技术。
The implementation scheme based on FPGA is proposed, and key techniques such as phase adjusting, elastic store and automatic switch control are introduced.
在线调节步长改变电压收敛速度，设计锁相控制电路，自动同步跟踪电网频率和相位。
The online variable step can also regulate the voltage convergence rate, and the phase-locked control circuit is designed to synchronously trace frequency and phase of power grid automatically.
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