Resources Contact Us Home
Vibration control system

Image Number 6 for United States Patent #5012428.

A vibration control system for generating desired random vibration environment with a given reference Power Spectral Density (P.S.D.) using a vibration generator on which a test object is fixed is disclosed. A detected signal representing vibration of a test object is converted into a response spectrum by Fast Fourier Transform (FFT) and the response spectrum is compared with the reference spectrum to determine a drive spectrum. Random drive signal having the determined drive spectrum amplitude is then generated continuously, and the signal is applied to a vibration generator on which the test object is fixed. This signal must be random i.e. nonperiodic, and therefore consisting of continuous spectral components with sufficient statistical independence. Method and facility to generate above mentioned signal are the principal of the present invention.

  Recently Added Patents
Front exterior of an automotive tail lamp
Pet burial pod
Managing imaging of computing devices
Maintenance guidance display device, maintenance guidance display method, and maintenance guidance display program
Communication device
Three-term predictive adder and/or subtracter
Display screen with graphical user interface
  Randomly Featured Patents
Telomerase immortalized neural progenitor cells
Synchronous control system
Two-stage mixing system, apparatus, and method
Indicia applicator for cigarette packages
Knife assembly and chipping knife therefor
Energy pathway arrangement
Corrosion resistant copper base alloys for heat exchanger tube
Valve and operator therefor
Transmitter disabling device
Integrated circuit having a semiconductor substrate with barrier layer