Patent ID: 11835426

Abstract:
A vibration control system calculates a Kurtosis Response Spectrum (KRS) of a response waveform which characterizes non-Gaussianity in a random vibration test and is utilized for vibration control. The system compares a target KRS and the response KRS, and controls a characteristic of a phase used to generate a waveform for control such that the response KRS becomes equal to the target KRS. The waveform for control is generated by applying a random phase to each frequency component of an amplitude corresponding to Power Spectral Density (PSD). The system controls a characteristic of this phase (e.g., standard deviation) per frequency, controls the KRS, deforms the waveform for control on the basis of an equalization characteristic, and calculates a drive waveform. The system sequentially updates the equalization characteristic on the basis of the response waveform and the drive waveform. The calculated drive waveform is provided to a vibration generator.