Apparatus and method for measuring the speed of a movable system

Details Apparatus and method for measuring the speed of a movable system Apparatus and method for measuring the speed of a movable system

1980-09-11

1983-04-05

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318341, 318636, 318571, 360 77, G05B 1300

Patent

active

043792561

ABSTRACT:
The relative speed of a movable head and a magnetic disc memory for data orded on a plurality of tracks, each having addresses written in a plurality of reference zones, is determined by reading the addresses read with the head at predetermined sampling times. The speed of the head is calculated as a function of the difference between the addresses read by the head and the interval between the sampling times.

REFERENCES:
patent: 3504260 (1970-03-01), Staples
patent: 3554980 (1970-12-01), Applequist et al.
patent: 3629560 (1971-12-01), Slawson
patent: 3758757 (1973-09-01), Buhler
patent: 4030132 (1977-06-01), Iftikar et al.
patent: 4031443 (1977-06-01), Droux et al.
patent: 4109184 (1978-08-01), Weber
patent: 4166970 (1979-09-01), Cardot et al.
Hewlett-Packard Journal, vol. 23, 1972, pp. 6-11.
IBM Tech. Disc. Bulletin, vol. 9, pp. 1694-1695.
IBM Tech. Disc. Bulletin, vol. 19, p. 1884.

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