Numerical control device with speed override control

Details Numerical control device with speed override control Numerical control device with speed override control

1993-02-24

1994-05-03

Ip, Paul

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318573, 318618, 318616, G05B 1118

Patent

active

053090748

ABSTRACT:
A multi-system numerical control device which receives input commands for each system and is operative to control the speed and acceleration/deceleration of corresponding moveable objects, such as a motors. Each system has an interpolation unit and an acceleration/deceleration unit that is responsive to a corresponding time constant. A speed override device is operative to generate a speed reduction control signal that is applied to the interpolation unit to reduce the speed and to the acceleration/deceleration unit to reduce the time constant, thereby ensuring that the position relationship between the systems will not be lost even when override is applied.

REFERENCES:
patent: 4214823 (1980-07-01), Pritchard
patent: 4262336 (1981-04-01), Pritchard
patent: 4449196 (1984-05-01), Pritchard
patent: 4652804 (1987-03-01), Kawamura et al.
patent: 4894596 (1990-01-01), Hara
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patent: 4941104 (1990-07-01), Teshima et al.
patent: 5004968 (1991-04-01), Mizuno et al.
patent: 5132912 (1992-07-01), Ito et al.
patent: 5194793 (1993-03-01), Niimi

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