Patent ID: 6414452
Filing Date: 2002-07-02
Classification: G01M,G05D,H02P

Abstract:
A waveform control unit of a vibrating table, which gives such a signal of an excitation wave that a reproduced wave reproduced in a vibrating table during an excitation may coincide with a target wave, to said vibrating table, comprising:an off-line compensation wave generator which generates an off-line compensation wave to be used as said excitation wave, on the basis of said target wave and a inverse characteristic of said vibrating table determined before said excitation is performed; and an on-line compensation wave generator which generates an on-line compensation wave to be said excitation wave on the basis of the inverse characteristic of said vibrating table during said excitation determined on the basis of said target wave and data of said excitation wave and said reproduced wave for a specific time during said excitation, wherein said excitation wave to be given to said vibrating table is switched during said excitation to a compensation wave based on said on-line compensation wave from said off-line compensation wave.