Mitsubishi Denki Kabushiki Kaisha

Kazuhiko Tomatsuri

Misako Okada

Hidehiko Matsumoto

Yuko Tomita

Satoshi Mizogami

Aya Imahashi

Yusuke Ushio

A servo control system which comprises an original cam pattern generatorfor generating a first pattern of a cam shape relative to a phase corresponding to one revolution of a cam mechanism; a correctorfor differentiating the original pattern of the original pattern generatorwith respect to time, multiplying the differentiation value by a constant to find a multiplication value, and subtracting a predetermined phase from the multiplication value to generate a correction cam pattern; and a position command devicefor adding the above-mentioned correction pattern to the above-mentioned original pattern to generate a second pattern and generating a position command of the above-mentioned servomotor based on the phase corresponding to one revolution of the above-mentioned cam mechanism using the second pattern.

Servo control system and method of setting

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.

Control apparatus for servo system

Growing community of inventors

Tokyo, Japan

Kazuhiko Tomatsuri