The key problems when designing a raster ruler data acquisition card were pulses frequencymultiplication and counting.
设计光栅计数卡的关键问题是对光栅脉冲进行倍频以及对倍频后的脉冲进行计数。
2
The industrial grating signals can be digital frequencymultiplication with a phase-locked loop (PLL) controlled by a microcomputer.
用微型计算机控制锁相环(PLL)可对计量光栅信号进行数字倍频。
3
A new method of detecting compensating reference current for active power filters by frequencymultiplication modulation (FMM) is presented in this paper.