Electricity: motive power systems – Positional servo systems – With particular 'error-detecting' means
Patent
1995-06-22
1997-12-16
Masih, Karen
Electricity: motive power systems
Positional servo systems
With particular 'error-detecting' means
31856822, 318629, 318632, 318600, 318798815-, G05B 106
Patent
active
056989601
ABSTRACT:
A motor servo system includes a microcomputer which obtains FG period data in response to an FG signal outputted from a capstan motor, and calculates rotation unevenness associate data D1 by totalizing (a hundred) absolute values of differences between each of respective FG period data and theoretical values. The microcomputer adjusts a gain of a servo circuit by comparing the rotation unevenness associate data D2 calculated at the last time and the rotation unevenness associate data D1 calculated at this time. That is, if D1>D2, a corrective gain .DELTA.G is inverted and stored into a memory as data D3. A new gain is determined by adding the data D3 and a present gain G.
REFERENCES:
patent: 3979651 (1976-09-01), Bringol
patent: 4780651 (1988-10-01), Nakano et al.
patent: 5175479 (1992-12-01), Tajima et al.
patent: 5196771 (1993-03-01), Naito
and JP 62126882(1) Abstract.
Masih Karen
Sanyo Electric Co,. Ltd.
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