Programmable positioning apparatus and acceleration control syst

Details Programmable positioning apparatus and acceleration control syst Programmable positioning apparatus and acceleration control syst

1973-11-29

1976-04-20

Scott, James R.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318561, G05B 1928

Patent

active

039522385

ABSTRACT:
Programming positioning apparatus is described for performing a programmed motion in a quick and smooth manner avoiding shock loads that shorten equipment life.
The described apparatus is a hard-wired digital system which is preprogrammed with respect to maximum acceleration and maximum velocity; receives the programmed distance data, makes the required calculations relating to the time periods the system operates according to a maximum acceleration mode, a maximum velocity mode and a maximum deceleration mode in order to perform the programmed motion at maximum speed while keeping the acceleration forces within acceptable limits; and produces motion command pulses supplied to the drive. The maximum acceleration can be held to a constant value fixed beforehand, or can be varied so that the acceleration will automatically adapt itself to produced inertia-forces or to the capability of the motor to drive its load.

REFERENCES:
patent: 3448362 (1969-06-01), Durf et al.
patent: 3482155 (1969-12-01), Fredriksen
patent: 3612220 (1970-10-01), Hall
patent: 3629560 (1971-12-01), Slawson
patent: 3699555 (1972-10-01), Du Vall
patent: 3699555 (1972-10-01), Du Vall
patent: 3731177 (1973-05-01), Command et al.
patent: 3792333 (1974-02-01), Cutler
patent: 3809986 (1974-05-01), Visser

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