Motor control device, numerical control device, robot control and integrated control system

The motor control device with a scalable architecture using serial communication interfaces addresses the challenge of controlling a high number of axes by reusing standard ASICs, achieving efficient and cost-effective control.

DE102020130130B4Active Publication Date: 2026-06-11FANUC LTD
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
FANUC LTD
Filing Date
2020-11-16
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Existing motor control devices struggle to accommodate an extremely high number of control axes without increasing development costs or complexity, especially when scaling from a standard number of axes, and often require expensive or over-engineered ASICs for higher axis counts.

⚗Method used

A motor control device with a main CPU connected to multiple integrated circuits and sub-CPUs, utilizing serial communication interfaces to manage a scalable number of control axes, allowing for flexible configuration and reduced costs by reusing ASICs designed for standard axes.

🎯Benefits of technology

The solution enables efficient control of a large number of axes with improved scalability, reduced costs, and simplified design modifications, while maintaining synchronization and error handling capabilities.

✦ Generated by Eureka AI based on patent content.

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Abstract

Engine control device (1), comprising a main CPU (11) that outputs position command values ​​to multiple motors; multiple integrated circuits (12) configured according to the number of multiple motors and connected to the main CPU (11); and multiple sub-CPUs (13) connected according to the respective multiple integrated circuits (12), wherein each of the multiple integrated circuits (12) has a motor interface control unit (21) which outputs a drive command value to an amplifier which drives a motor such that the motor moves to the position of the position command value, a serial main CPU interface (22) that performs communication between the main CPU (11) and the motor interface control unit (21), a serial sub-CPU interface (23) that performs communication between the sub-CPUs (13) connected to the integrated circuits (12) and the motor interface control unit (21), an internal bus (24) that connects the main serial CPU interface (22) and the motor interface control unit (21), and a serial optional unit interface (25) connected to the internal bus (24), wherein each of the several sub-CPUs (13) controls the output of the drive command value by the motor interface control unit (21) in the integrated circuit (12) connected to the respective sub-CPU (13) on the basis of the position command value read via the integrated circuit (12) connected to the respective sub-CPU (13) and a position feedback value from the motor, wherein the motor interface control units (21) of the respective multiple integrated circuits (12) are interconnected via the serial optional unit interface (25).
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