System for testing articles with random and harmonic vibrations

Details System for testing articles with random and harmonic vibrations System for testing articles with random and harmonic vibrations

1983-08-12

1985-04-30

Birmiel, Howard A.

Measuring and testing

Vibration

Vibrator

G01M 700

Patent

active

045136203

ABSTRACT:
A system for testing articles with random and harmonic vibrations comprises a multichannel random signal shaper, a tuneable rejection filter connected to the output of the shaper, a vibrator connected to the output of the filter through an adder and a power amplifier which are placed in series, first and second tuneable filters and a signal spectrum analyzer connected to the first tuneable filter. The system according to the invention includes a variable-frequency harmonic signal generator, the signal spectrum analyzer representing a harmonic signal analyzer and comprising a harmonic signal control loop and a random signal control loop coupled thereto.

REFERENCES:
patent: 3157045 (1964-11-01), Maki
patent: 3710082 (1973-01-01), Sloane et al.
patent: 3848115 (1974-11-01), Sloane et al.

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