AGV Stop Position Control for Faster Multi-Location Article Loading
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Solution Overview
Problem
The inefficiency in loading articles using automated guided vehicles (AGVs) due to prolonged preparation operations and varying loading methods, which can lead to suboptimal stop positions and increased loading times.
Innovation Solution
A control method that calculates the time required for a worker to load multiple articles at different locations and determines the optimal stop position for the AGV based on these calculations, considering various loading methods and worker characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the AGV always travels near the worker to enable article loading, then the worker can load articles into the cage trolley, but the preparation operation time increases and loading efficiency decreases
Solution Approach 1:
The AGV performs preparation operations (rotation and translation) in advance at a distance from the worker, rather than continuously positioning near the worker. The controller calculates the optimal stop position considering the time required for these preliminary actions, allowing the AGV to prepare before approaching the loading location, thus reducing total preparation time.
2Ease of operation
If the AGV performs rotation and translation for loading assistance, then the loading process is facilitated, but the preparation operation takes more time
Solution Approach 1:
Rotation and translation operations are performed as preliminary actions before the AGV reaches the final loading position. The controller incorporates the time required for these operations into the stop position calculation, allowing them to be completed in advance rather than delaying the loading process.
Solution Approach 2:
The AGV's stop position is dynamically determined based on multiple factors including worker position, article locations, and the time required for preparation operations. The controller calculates the optimal stop position that balances the need for loading assistance with minimizing preparation time, adapting to different loading scenarios.
3Reliability
If the AGV travels at lower speed for safety, then worker safety is improved, but the overall transportation efficiency decreases
Solution Approach 1:
The AGV performs preparation operations at a distance from the worker before accelerating to higher speeds for transportation. Safety-critical positioning and preparation are completed in advance, allowing faster travel during transportation phases while maintaining safety during loading operations.
Data Source
AI summary
A control method performed by a controller includes calculating times required for a worker to load, on an automated guided vehicle, multiple articles placed in multiple locations regarding multiple cases among which a stop situation of the automated guided vehicle where the worker loads the articles varies and determining a position in which the automated guided vehicle is to be stopped, based on the calculated times.