Multi-Axis Servo Parameter Timing for Vibration-Free Synchronization

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Solution Overview

Problem

Existing multi-axis control systems face challenges in efficiently adjusting control parameters across multiple axes, particularly when axes are mechanically constrained or not, leading to issues with vibration and oscillation, which can damage machinery and affect synchronization accuracy.

Innovation Solution

A multi-axis control adjustment apparatus and method that includes an adjustment axis selection unit, an adjustment operation execution unit, and a first control parameter setting unit, allowing for synchronized adjustment operations and timing changes of control parameters across multiple axes, whether mechanically constrained or not, using a parameter adjustment apparatus connected to servo amplifiers and a host controller.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If control parameters are adjusted for multiple axes simultaneously in existing multi-axis control systems, then adjustment efficiency is improved, but vibration and oscillation occur causing machinery damage and synchronization accuracy degradation

Engineering Contradiction:
Improveadjustment efficiencyVSAvoidsynchronization accuracy
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The patent segments the multi-axis control adjustment into individual axis adjustments rather than simultaneous adjustment. The control parameter adjustment apparatus adjusts control parameters for each axis separately through a unified interface, preventing the vibration and oscillation that occurs with simultaneous adjustment while maintaining high adjustment efficiency through batch processing capability.

Inventive Principle:
Principle #1Segmentation

2Reliability

If control parameters are adjusted individually for each axis, then vibration and oscillation are prevented, but adjustment time and operational complexity increase

Engineering Contradiction:
Improvevibration preventionVSAvoidadjustment time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent merges multiple individual axis adjustment operations into a unified control parameter adjustment apparatus. The system provides a single adjustment interface that can process control parameters for multiple axes in sequence, combining the benefits of individual axis adjustment (vibration prevention) with efficient batch processing (reduced adjustment time).

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The adjustment apparatus maintains continuous operation by automatically proceeding through each axis adjustment without requiring manual intervention between axes. The system continuously adjusts control parameters for each axis in sequence, eliminating idle time and manual reconfiguration while maintaining the reliability of individual axis adjustment.

Inventive Principle:
Principle #20Continuity of useful action

3Ease of operation

If a unified adjustment interface is provided for multiple axes, then ease of operation is improved, but the complexity of managing different axis configurations increases

Engineering Contradiction:
Improveadjustment interface usabilityVSAvoidconfiguration management complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The control parameter adjustment apparatus implements a universal adjustment interface that can handle different axis configurations (mechanically constrained and non-constrained axes) through the same operation mode. The system automatically adapts to different axis types without requiring different adjustment procedures, simplifying operation while managing configuration complexity through automatic detection and adaptation.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4016211A1Multi-axis control adjustment apparatus, multi-axis control adjustment system, and multi-axis control adjustment method
Publication Date: 2022.06.22 YASKAWA DENKI KK
  • EP4016211A1 patent drawingFigure 1
  • EP4016211A1 patent drawingFigure 2
  • EP4016211A1 patent drawingFigure 3

AI summary

A multi-axis control adjustment apparatus (5) includes an adjustment axis selection unit (51) configured to select a plurality of target axes among a plurality of axes each of which represents a combination of a motor and a motor control device (9, 11A, 11B, 13A, 13B) configured to control the motor according to a control parameter of the motor control device (9, 11A, 11B, 13A, 13B), an adjustment operation execution unit (53) configured to perform adjustment operations in each of which the control parameter is adjusted with respect to each of the plurality of target axes, and a first control parameter setting unit (55) configured to change, according to the adjustment operations, timing at which the control parameter is set with respect to each of the plurality of target axes.