Servo Parameter Tuning with Real-Time FFT Slider Simulation

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Solution Overview

Problem

The usability of servo parameter adjustment devices is hindered by the need for manual input of resonance frequencies and repetitive simulation adjustments, which are time-consuming and cumbersome.

Innovation Solution

A servo parameter adjustment device that includes a slider bar for adjusting servo parameters, enabling real-time simulation and graphical display of frequency and phase characteristics, allowing for easy and efficient adjustment of filter characteristics through slider operations and cursor interactions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual input operations are used to adjust filter characteristics and execute simulations repeatedly, then servo parameters can be adjusted, but the adjustment process becomes time-consuming and cumbersome

Engineering Contradiction:

Improveusability of servo parameter adjustmentVSAvoidtime required for parameter adjustment

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical input operations with an automated cursor-based graphical interface. Users can directly interact with the frequency characteristic graph to set resonance frequencies and filter parameters by dragging cursors, eliminating the need for repetitive manual input and simulation execution. This substitution of the interaction mechanism significantly improves ease of operation and reduces adjustment time.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Manufacturing precision

If simulation analysis is performed repeatedly to obtain desired filter characteristics, then accurate servo parameters can be achieved, but the process becomes cumbersome and time-consuming

Engineering Contradiction:

Improveaccuracy of servo parameter adjustmentVSAvoidefficiency of parameter adjustment process

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The system provides self-service functionality by automatically performing simulation analysis when cursor positions are changed on the frequency characteristic graph. The simulation results are immediately reflected in the graphical display, allowing users to obtain accurate servo parameters through simple cursor dragging rather than repeatedly initiating simulations. This automation maintains precision while dramatically improving productivity.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If manual input of resonance frequency and filter characteristics is required, then simulation analysis can be performed, but the operation becomes complex and repetitive

Engineering Contradiction:

Improveaccuracy of resonance frequency identificationVSAvoidcomplexity of adjustment operations

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent introduces cursors as intermediary elements between the user and the filter parameters. Instead of directly inputting resonance frequencies and filter characteristics, users interact with graphical cursors that automatically extract precise values from the frequency characteristic graph. This intermediary mechanism simplifies operations while maintaining measurement precision, as the cursors automatically track and read values from the graphical display.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentEP3594760B1Servo parameter adjustment device and servo parameter adjustment method

Publication Date: 2026.01.28 OMRON CORP

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AI summary

In order to improve usability during parameter adjustment, this adjustment device performs a simulation in which a set value of a servo parameter received during a slide operation period of a slider bar is reflected in a FFT analysis result of response characteristics of speed control or position control, and the simulation display of the frequency characteristics and phase characteristics is updated on the adjustment screen.