Path control apparatus for the computer directed control of a nu

Details Path control apparatus for the computer directed control of a nu Path control apparatus for the computer directed control of a nu

1977-12-20

1980-07-22

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318571, G05B 1924

Patent

active

042141923

ABSTRACT:
In path control apparatus for a numerically controlled machine tool, a computer determines the trajectory to be traversed in space, resolves the latter by way of interpolation into the axial increments of the individual feed axes and performs complete position control for each axis. The interpolation is accomplished by the method of direct function computation, using travel distance increments proportional to the trajectory velocity. The position control is designed as a discrete control and operates with the premise that the minimum total computing cycle time is shorter than the sampling time of the fastest position control loop required by the control system.

REFERENCES:
patent: 3987350 (1976-10-01), Pomella et al.
patent: 4078195 (1978-03-01), Mathias et al.
patent: 4079235 (1978-03-01), Froyd et al.

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