NC Power Consumption Forecasting From Acceleration Setting Changes

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Solution Overview

Problem

Existing technologies lack accuracy in calculating expected power consumption and fail to facilitate effective comparison between actual and expected power consumption for energy-saving measures.

Innovation Solution

A numerical control device that includes a program storage unit, actual power consumption acquisition unit, expected power consumption calculation unit, setting value storage unit, and display unit to accurately calculate and visualize expected power consumption by considering changes in acceleration/deceleration settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing technologies are used to calculate expected power consumption, then the calculation process is simple, but the accuracy of expected power consumption calculation is insufficient

Engineering Contradiction:
Improveaccuracy of expected power consumption calculationVSAvoidcomplexity of calculation system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system performs preliminary actions by acquiring actual power consumption data before calculating expected power consumption. It stores acceleration/deceleration settings and their corresponding power consumption characteristics in advance, then uses this pre-acquired data to accurately calculate expected power consumption for different machining parameters without requiring complex real-time measurements.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system introduces an intermediary approach by using actual power consumption measurements as a baseline and adding calculated increments based on acceleration/deceleration changes. This intermediary method (actual power consumption + increment/decrement) provides accurate expected power consumption without requiring direct complex measurement of every parameter.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If actual power consumption is measured directly, then the measurement is accurate, but it is difficult to compare with expected power consumption for energy-saving analysis

Engineering Contradiction:
Improveaccuracy of power consumption measurementVSAvoidcomparability information for energy-saving measures
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The system implements feedback by calculating and displaying both actual power consumption and expected power consumption together. This allows operators to see the difference between actual and expected values, providing feedback on energy efficiency and enabling comparisons for energy-saving analysis while maintaining accurate measurement of actual power consumption.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system segments power consumption information into distinct components: actual power consumption, expected power consumption, and their difference. This segmentation allows operators to separately analyze each component and understand the relationship between actual performance and expected performance for energy-saving decisions.

Inventive Principle:
Principle #1Segmentation

3Productivity

If acceleration/deceleration settings are changed to optimize machining, then productivity improves, but power consumption increases

Engineering Contradiction:
Improvemachining efficiencyVSAvoidpower consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The system enables parameter changes by allowing operators to modify acceleration/deceleration settings and immediately see the expected impact on power consumption. By calculating expected power consumption based on different acceleration/deceleration parameters, the system helps operators find optimal settings that balance productivity improvement with energy consumption control.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS20250251716A1Numerical control device and expected electric power consumption calculation system
Publication Date: 2025.08.07 FANUC LTD
  • US20250251716A1 patent drawing
  • US20250251716A1 patent drawing
  • US20250251716A1 patent drawing

AI summary

The present invention improves the accuracy of a predicted value of electric power consumption. In addition, by visualizing actual electric power consumption and expected electric power consumption, the present invention supports electric power consumption while facilitating comparison. This numerical control device comprises: a program storage unit for storing an operation program that operates a machine; an actual electric power consumption acquisition unit for operating the machine according to a first acceleration/deceleration setting based on the operation program, and acquiring an actual electric power consumption by calculation or measurement; an expected electric power consumption calculation unit for calculating an expected electric power consumption by adding at least the actual electric power consumption and an increase/decrease in electric power consumption of a change in acceleration/deceleration from the first acceleration/deceleration setting to a second acceleration/deceleration setting; a setting storage unit for storing at least part of information that is required for the calculation of the electric power consumption of the first acceleration/deceleration setting and the second acceleration/deceleration setting in the expected electric power consumption calculation unit; and a display unit for displaying the actual electric power consumption and the expected electric power consumption.