Mobile Object Entry Control for Variable Conveyor Stop Positions
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Solution Overview
Problem
Existing manufacturing systems fail to account for changes in stop positions of mobile objects due to processing delays or interruptions, leading to inefficiencies and potential damage during conveyance transitions between belt conveyance and remote-controlled vehicle travel.
Innovation Solution
A control system that identifies stop positions using control information and obstacle information to ensure accurate entry into conveyance apparatuses, adjusting timing and speed to prevent overhanging and damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the stop position is determined before the mobile object enters the conveyance apparatus, then the control system can prepare the conveyance in advance, but the stop position may become inaccurate due to processing delays or interruptions during conveyance
Solution Approach 1:
The control system dynamically updates the stop position information during the conveyance process. Instead of using a static pre-determined stop position, the system continuously receives updated stop position information from the conveyance apparatus controller, allowing it to adapt to changes in processing state and maintain accurate positioning despite delays or interruptions.
Solution Approach 2:
The control system implements feedback by continuously monitoring the actual stop position information provided by the conveyance apparatus and using this information to adjust the mobile object's entry timing and speed. This closed-loop control ensures that the mobile object reaches the correct position even when processing delays or interruptions occur during conveyance.
2Ease of operation
If the mobile object enters the conveyance apparatus at a fixed speed, then the entry process is simple to control, but the mobile object may overhang the conveyance apparatus causing damage
Solution Approach 1:
The control system dynamically adjusts the mobile object's speed during entry based on the distance to the stop position and the conveyance apparatus state. Rather than maintaining a fixed speed, the system modifies speed in real-time to ensure the mobile object enters safely without overhanging, balancing operational simplicity with safety requirements.
Solution Approach 2:
The control system performs preliminary speed adjustment before the mobile object reaches the conveyance apparatus entry point. By calculating the required speed based on the distance to the stop position and potential obstacles, the system prepares the appropriate speed profile in advance, preventing overhanging and damage while maintaining smooth entry control.
Data Source
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AI summary
A control system is configured to control movement of a mobile object that is configured to be conveyed by unmanned driving at least in a manufacturing process, and the control system includes: a stop position identification section (316; 218) configured to identify a stop position at which the mobile object (100) is stopped on a conveying part of a conveyance apparatus including the conveying part configured to convey the mobile object (100); and a control command section (312; 214) configured to generate and output a control command to cause the mobile object (100) to enter the conveying part according to the stop position.