Patent ID: 11879816
Assignee: IMV CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A vibration control system comprising:
a vibration physical quantity detection sensor configured to detect a vibration physical quantity of a test object that is vibrated by a vibration generator operated on the basis of a drive waveform, wherein the vibration physical quantity represents a vibration expressed as a first dimension;
a processor, memory and instructions, the instructions when executed:
determine a response vibration physical quantity PSD (Power Spectral Density) by subjecting a response vibration physical quantity waveform from the vibration physical quantity detection sensor to a Fourier transform;
determine a corresponding vibration physical quantity PSD for control, wherein the vibration physical quantity PSD for control represents a vibration expressed as a second different, dimension, which corresponds to vibration physical quantity PSD for control, on the basis of the response vibration physical quantity PSD and a reference vibration physical quantity PSD;
determine a non-Gaussian random waveform of the corresponding vibration physical quantity for control by subjecting spectrum data, which is generated from the corresponding vibration physical quantity PSD for control, to an inverse Fourier transform in order to obtain desired non-Gaussian characteristics, and set the non-Gaussian random waveform of the corresponding vibration physical quantity for control as a corresponding vibration physical quantity waveform for control;
determine the drive waveform for the vibration generator on the basis of the corresponding vibration physical quantity waveform for control with inverse characteristics of transfer characteristics of at least the vibration generator and the test object as equalization characteristics; and
modify the equalization characteristics on the basis of the drive waveform and the response vibration physical quantity waveform, and
outputting the drive waveform, via a drive signal, to the vibration generator to test the test object,
wherein:
the vibration physical quantity detection sensor is configured to detect any one of a displacement, a velocity, an acceleration, or a jerk associated with a vibration of the test object,
the response vibration physical quantity PSD has a selected dimension of a displacement PSD, a velocity PSD, an acceleration PSD, or a jerk PSD, and
the corresponding vibration physical quantity PSD for control of the second, different dimension is any one of the displacement PSD, the velocity PSD, the acceleration PSD or the jerk PSD, with the second, different dimension being different from the selected dimension of the response vibration physical quantity PSD.