Electricity: motive power systems – Positional servo systems – With compensating features
Patent
1995-02-17
1996-06-11
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
With compensating features
318560, 318634, G05D 23275
Patent
active
055258859
ABSTRACT:
A revolution detecting apparatus which detects and outputs a compensated revolution position adjusted according to compensation values, stored according to the ranges of a rotation position indicated on the basis of the number of revolutions of a motor for driving a table. Compensation values for a plurality of revolving angle ranges within one revolution of a revolving shaft are stored beforehand, and are read out on the basis of detected rotation position ranges of the revolving shaft determined from the output of a revolution counter and a rotation angle detector. A compensated rotation position is calculated according to the read-out compensation values, the detected rotation angle and the detected revolution count. The apparatus also can store backlash and temperature compensation data and can judge when such data is to be applied so that the speed and accuracy of a servo control apparatus is improved.
REFERENCES:
patent: 4853604 (1989-08-01), McMullin et al.
patent: 5032936 (1991-07-01), Fujioka et al.
Masih Karen
Mitsubishi Denki & Kabushiki Kaisha
Shoop Jr. William M.
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