Parameter Adjustment Support for Motor Drive Axes

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Solution Overview

Problem

Operators, especially those inexperienced, face challenges in adjusting acceleration/deceleration parameters for motor drive axes in machine tools due to the time-consuming and skill-intensive process, and existing methods fail to support optimal parameter setting, leading to suboptimal acceleration/deceleration characteristics.

Innovation Solution

A parameter adjustment support device that obtains actual acceleration/deceleration characteristics, allows external input for parameter setting, and displays commanded and actual curves for comparison, enabling operators to adjust parameters effectively and automatically transmit optimized settings to the numerical controller.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual adjustment of acceleration/deceleration parameters is performed by operators, then parameter setting can be completed, but it requires great amount of time and effort and cannot be performed unless the operator has skill and knowledge

Engineering Contradiction:

Improveease of parameter adjustmentVSAvoidtime for parameter adjustment

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system automatically obtains actual acceleration/deceleration characteristic curves from the numerical controller or external storing device, and automatically generates commanded acceleration/deceleration characteristic curves based on input parameters, eliminating the need for manual trial-and-error adjustment by operators

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The parameter adjustment support device acts as an intermediary between the operator and the numerical controller, providing automated curve generation and comparison functionality that simplifies the parameter adjustment process while maintaining accuracy

Inventive Principle:

Principle #24Intermediary (Mediator)

2Speed

If acceleration/deceleration property is limited to fit high-speed area, then high-speed positioning performance is improved, but acceleration/deceleration property cannot be sufficiently delivered in low-speed area

Engineering Contradiction:

Improvehigh-speed positioning performanceVSAvoidacceleration/deceleration delivery in low-speed area

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system allows different acceleration/deceleration parameters to be set for different velocity ranges by displaying separate curves for low-speed and high-speed areas, enabling optimized control characteristics for each speed region rather than using a single limited parameter set

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The parameter adjustment support device dynamically adapts the acceleration/deceleration characteristics to match the actual drive axis performance at different speeds, allowing the system to transition from static limited parameters to dynamic speed-dependent parameters that optimize both high-speed and low-speed performance

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If multiple acceleration/deceleration parameters are adjusted manually to obtain ideal characteristic curve, then commanded acceleration/deceleration can match actual characteristics, but the process takes great amount of time and effort

Engineering Contradiction:

Improveaccuracy of acceleration/deceleration characteristic matchingVSAvoidcomplexity of parameter adjustment process

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system replaces the manual mechanical adjustment process with automated computational generation of acceleration/deceleration characteristic curves based on input parameters, eliminating the need for operators to manually adjust multiple parameters while maintaining or improving accuracy

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The parameter adjustment support device creates a copy of the actual acceleration/deceleration characteristic curve and allows operators to visually compare it with the commanded curve, enabling accurate parameter setting through visual feedback rather than complex manual adjustment

Inventive Principle:

Principle #26Copying

Data Source

PatentUS9436178B2Parameter adjustment support device having function for supporting parameter adjustment

Publication Date: 2016.09.06 FANUC LTD

AI summary

A parameter adjustment support device configured to effectively adjust an acceleration/deceleration parameter of a drive axis, even when an operator thereof is inexperienced. The Support device includes: an actual acceleration/deceleration characteristic obtaining part which obtains an actual acceleration/deceleration characteristic curve relating to a velocity and an acceleration of the drive axis, from a numerical controller or an external storing device; a parameter setting part which sets or changes the parameter based on an external input; an acceleration/deceleration characteristic displaying part which generates a commanded acceleration/deceleration characteristic curve relating to the velocity and the acceleration of the drive axis based on the setup or updated parameter, and contrastively displays the obtained actual curve and the generated commanded curve; and a setting information outputting part which outputs the setup or updated parameter to the numerical controller.