Control apparatus for servo system

Details Control apparatus for servo system Control apparatus for servo system

1995-05-05

1997-02-04

Cabeca, John W.

Electricity: motive power systems

Positional servo systems

With compensating features

318601, G05D 300

Patent

active

056002211

ABSTRACT:
A control apparatus for a servo system uses a servo motor to perform operations equivalent to those of a cam mechanism. A motion command section has two data tables which are used to calculate and output a position command and a velocity compensation command equivalent to a cam stroke. A servo drive section makes velocity compensation and current compensation on the basis of position and velocity compensation commands. The motion command section, alternatively, may have three data tables for the calculation of the compensation commands. In addition, multipliers are used to adjust the weight of the compensation commands. Rather than the data tables being present in the motion command section, they may be placed in the servo drive section. Formulae representing the mechanical characteristics of the cam system may be used in place of the data tables.

REFERENCES:
patent: 3970830 (1976-07-01), White et al.
patent: 4378592 (1983-03-01), Heiberger et al.
patent: 4873793 (1989-10-01), Asano et al.

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