Title:
OSCILLATION CONTROLLER
Document Type and Number:
Japanese Patent JPH0298715
Kind Code:
A
Abstract:
PURPOSE:To prevent an unrequired component from being generated in amplitude and to simulate Gaussian irregular oscillation with high accuracy by using a window function not including the component of a degree of integer times of the number of times of overlap as the window function of specific shape. CONSTITUTION:The title controller consists of an A/D converter 8, a Fourier transform means 10, a control arithmetic means 12, a reverse Fourier transform means 14, a random forming means 16, and a D/A converter 18, etc. And the window function which satisfies equation I is used as the window function. In equation I, when it is 0<=t<=T, omega1=2eta/T, omegak=omega1 deg.k, and k=1, 2, 3...R assuming T as the time length of one frame, and it is k=nI assuming (n) as a natural number and I as the number of frames to be superposed, it is controlled so that ak and bk go to zeros essentially. In such a manner, the components other than a0 are negated with each other at the time of performing the superposition of a window operation, and no unrequired amplitude is generated, which enables the Gaussian irregular oscillation to be simulated with high accuracy.
Inventors:
UENO KAZUYOSHI
SAKAI ZENJI
SAKAI ZENJI
Application Number:
JP25242888A
Publication Date:
April 11, 1990
Filing Date:
October 05, 1988
Export Citation:
Assignee:
IMV KK
International Classes:
G05D19/02; G01M7/02; (IPC1-7): G05D19/02
Domestic Patent References:
| JPS63252430A | 1988-10-19 |
Attorney, Agent or Firm:
Furuya Eiko (3 outside)
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