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1, The frequency multiplication principle and accuracy are analyzed, and has confirmed the design accuracy through the experiment.

2, The industrial grating signals can be digital frequency multiplication with a phase-locked loop (PLL) controlled by a microcomputer.

3, In this paper, a microcomputer-based frequency multiplication and full period sampling method is introduced, and an application of this method in dynamic balancing of rotor is also introduced.

4, Fourier's analysis method was further used to discover frequency multiplication weak signal.

5, The utility model discloses a clock synchronized frequency multiplication circuit, in particular relating to clock synchronized frequency multiplication circuit in circuit design and PLC design.

6, Using PLL synthesis technology such as frequency multiplication and frequency division, may obtain the multi-frequencies, the high stable oscillator signal output.

7, Technical characteristics mainly include frequency multiplication circuit, average algorithm filter and error calibration.

8, An L-shaped band elimination filter on the T-shaped joint part is also used for restricting the resonance of the frequency multiplication of the first resonance frequency.

9, Use a binary digital shifter replace the traditional divider in ADPLL, make the structure simple and keeps the loop gain constant when the frequency multiplication factor changes.

10, To achieve FFTS in tradition, the transmission system terminal should have Frequency Multiplication Transformer (FMT) to convert low frequency power to 50 HZ power.

11, Aiming at the existing problem in harmonics measurement of power system, the paper(presented) a collecting method based on frequency multiplication phase-locked.

12, A new method of detecting compensating reference current for active power filters by frequency multiplication modulation(FMM) is presented in this paper.

13, The waveforms of the pupillary responses to the sinusoidal light stimuli appear to be of synchronized frequency multiplication.

14, The key problems when designing a raster ruler data acquisition card were pulses frequency multiplication and counting.

15, Using a method of combining variable phase shift with frequency multiplication,[http://sentencedict.com/frequency multiplication.html] large index phase modulation can be realized.

16, The paper presents a new type of loop, which uses first-order or second-order steady-state zero-error systems for locking, frequency multiplication and tracking.