Pressure fluctuation frequency characteristics in spout- fluid bed based on ARM power spectrum analysis;

Study on methods for analyzing frequency characteristics of shaking table systems;

Frequency Characteristics Instrument for Electro-Hydraulic Servo Valves;

Application of Formula Node in the measurement of frequency characteristic;

Design of Frequency Characteristic Testing Meter Based on LabVIEW;

The Frequency Characteristic Testing Meter Based on Single Chip Microcomputer;

The analysis on the frequency character for the leather diaphragm gas meters;

According to the analysis of the design principle and the equivalent circuit of the Rogowski coil,the measure relation was educed,the pretreatment to the Rogowski coil s sampling signal was done,and the frequency characteristic to the treatment circuit was analyzed.

This paper is to take in common use without the source electric voltage probe as an example, discussing to have no the work principle that source electric voltage probe, the frequency characteristic, the choice that probe and the right operation method and calibration accuracy.

Radio frequency response analyzer;

In order to improve testing precision of frequency response of actuators,systematic error produced by the testing system is analyzed with the phase error caused by A/D multiplex sampling discussed specially.

In order to test the frequency response of missile actuator with high efficiency and precision,a new testing method for frequency response based on frequency modulated pulse sweep(chirp signal) is advanced.