Digital positioning system

Details Digital positioning system Digital positioning system

1974-04-29

1976-02-24

Scott, James R.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318572, 318600, 318601, G05B 1928

Patent

active

039406750

ABSTRACT:
A lateral feed position system for a single slide grinder or the like wherein a wheel spindle is displaced between a sequence of preset end points. The end points are input from decade switches as position commands and compared to a current position count in a digital comparator unit. An oscillator is energized to apply up or down count signals to the comparator depending on the result of the comparison. The same signals are applied to a stepper motor. Actual displacement signals from a shaft angle encoder are compared to the position commands to advise a sequencer that the spindle is "in position" so that the next command can be input. Means are provided to adjust the actual position counts to compensate for wheel wear. Specific circuits are disclosed.

REFERENCES:
patent: 3209222 (1965-09-01), Holy
patent: 3218532 (1965-11-01), Toscano
patent: 3593091 (1971-07-01), Ross
patent: 3594563 (1971-07-01), Bishop
patent: 3626266 (1971-12-01), Sindelar et al.
patent: 3628119 (1971-12-01), Abraham
patent: 3665499 (1972-05-01), Cutler
patent: 3795851 (1974-03-01), Gage et al.
patent: 3820287 (1974-06-01), Klar et al.
patent: 3840792 (1974-10-01), Yokoe

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