Position Data Selection for Accurate Motion Simulation
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Solution Overview
Problem
Existing motion simulation technologies for industrial machines are inefficient due to the unnecessary collection and transfer of position data, which can affect simulation accuracy and increase processing time, especially when the machine is stopped or operating in specific states like linear or curve interpolation.
Innovation Solution
A selection device that dynamically selects position data points for use in motion simulations based on the worst-case change amount in accuracy, acquired from a control device, to optimize data transfer volume and reduce processing time by excluding non-critical data points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If all position data points are collected and transferred to the simulation device, then the simulation accuracy is maintained, but the processing time and data transfer volume increase
Solution Approach 1:
The patent segments the position data points into different categories based on their importance for simulation accuracy. The selection device divides data points into essential ones (that must be transferred) and non-essential ones (that can be excluded), allowing selective data transfer that maintains accuracy while reducing processing time.
Solution Approach 2:
The patent applies local quality by treating different position data points differently based on their specific characteristics and importance. Instead of uniform data handling, the system evaluates each data point's contribution to simulation accuracy and applies selective transfer rules, ensuring that critical data is preserved while non-critical data is excluded.
2Measurement precision
If all position data points are transferred to the simulation device, then the simulation accuracy is maintained, but the data transfer volume increases
Solution Approach 1:
The patent extracts only the necessary position data points from the complete dataset and transfers them to the simulation device. The selection device identifies and extracts essential data points based on their impact on simulation accuracy, excluding redundant data points that would increase transfer volume without contributing to accuracy.
Solution Approach 2:
The patent applies partial action by transferring only a subset of position data points rather than all available data. This selective approach ensures that the minimum necessary data volume is transferred to maintain simulation accuracy, avoiding the excess data transfer that would occur with complete data transmission.
3Measurement precision
If position data is collected during machine stop periods, then more data is available for simulation, but the processing time increases without improving accuracy
Solution Approach 1:
The patent applies preliminary action by evaluating the importance of position data points before transfer. The selection device预先 determines which data points are essential for simulation accuracy, allowing the system to skip unnecessary data collection and processing during machine stop periods, thereby improving processing efficiency without sacrificing accuracy.
Data Source
AI summary
A selection device is for selecting, when operation simulation is to be performed, positional data of an observation object to be used. The selection device includes a position acquisition unit that acquires positional data including coordinate values that indicate the position of the observation object, a state acquisition unit that acquires the state of the observation object including an operation command and at least one item of data not based on the operation command, a worst change amount calculation unit that calculates, based on the state of the observation object, a worst change amount in accuracy of operation simulation between the case where the positional data is used for a calculation process relating to the operation simulation and the case where the data is not used, and a selection unit that selects positional data to be used for the operation simulation, based on the calculated worst change amount.