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
Rose plant named `ESM R044`
System and method for predicting remaining useful life of device components
Switching element for a valve train of an internal combustion engine
Substrate processing apparatus and display method of substrate processing apparatus
Data modulation for groups of memory cells
Optoelectronic devices and a method for producing the same
Opportunistic modem
  Randomly Featured Patents
Drink bottle and lid with cover for drink spout
Apparatus for holding intestines out of an operative field
Biphenyl epoxy resin, naphthalene-containing phenolic resin and accelerator triphenylphosphine/p-benzoquinone
Beam control device utilizing beam having a specific direction of polarization to control a laser used in an optical memory system
Data carrier with an optically variable element
Arthropodicidal pyrazolines, pyrazolidines and hydrazines
Inkset, ink cartridge, inkjet recording method, and recorded matter
Apparatus and method for determining vehicle wheel alignment measurements from three dimensional wheel positions and orientations
Artificial lung
Passenger detection system