Robot control device and robot control method

By using a thermal model to calculate the heat generation and base temperature of the amplifier in the robot control device, the problem of excessively restricting the amplifier's operation in the prior art is solved, and high-precision temperature estimation and overcurrent prevention are achieved.

CN122349463APending Publication Date: 2026-07-07FANUC LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FANUC LTD
Filing Date
2023-12-26
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

In the existing technology, the amplifier that supplies current to the motor is affected by factors such as the ambient temperature when calculating the temperature, which leads to an excessively limited threshold and an inability to accurately calculate the heat generation, thus excessively limiting the operation.

Method used

The heat output of the amplifier is calculated using a thermal model. Combining the base temperature and the actual heat output, the actual temperature of the amplifier is estimated through memory and processor. A warning is issued when the temperature exceeds a threshold to prevent overcurrent.

Benefits of technology

It enables high-precision calculation of amplifier temperature, avoiding excessive restriction of its operation and ensuring safe and efficient operation.

✦ Generated by Eureka AI based on patent content.

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Abstract

A robot control device (10) that controls a robot on which at least one motor (M) is mounted, includes at least one memory (30) that stores a thermal model of an amplifier (50) that supplies a current to the motor (M), and at least one processor (40) that estimates an actual heat generation amount of the amplifier (50) based on a heat generation amount of the amplifier when the current is supplied to the motor calculated using the thermal model, and a base heat amount corresponding to a base temperature that is a temperature of the amplifier (50) immediately before the current is supplied to the motor (M).
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Citation Information

Patent Citations

  • Robot overcurrent prevention system

    JP2006142470A