Transfer Robot Road-Surface Sensing for Precise Path Control
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Solution Overview
Problem
Unmanned transfer robots face challenges in precise positioning and maintaining a stable traveling path between work stations due to vibrations caused by uneven road surfaces and obstacles, which can lead to deviations from the intended path and potential damage to mounted workpieces.
Innovation Solution
An unmanned transfer robot system equipped with a self-propelled vehicle, a six-axis articulated robot, and a sensor (such as a camera) that detects road surface conditions, allowing the control unit to adjust the traveling speed and path based on real-time data to minimize vibrations and maintain precise navigation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the unmanned transfer vehicle travels at high speed between work stations, then productivity is improved, but the vehicle deviates from the traveling path due to vibrations caused by uneven road surfaces
Solution Approach 1:
The sensor detects road surface conditions in advance before the vehicle reaches problematic areas. The control unit processes this information and adjusts traveling speed proactively, reducing vibrations before they cause significant path deviation, thereby maintaining both high productivity and reliable path adherence
Solution Approach 2:
The system continuously monitors road surface conditions using the sensor and adjusts the traveling speed in real-time based on detected conditions. This closed-loop feedback mechanism allows the vehicle to maintain optimal speed while minimizing vibrations and path deviation, resolving the contradiction between productivity and reliability
2Extent of automation
If the robot is mounted on the unmanned transfer vehicle, then automation is improved, but positioning precision deteriorates due to vehicle vibrations
Solution Approach 1:
The system detects uneven road surfaces and obstacles in advance using the sensor, allowing the control unit to adjust traveling speed before the vehicle encounters problematic areas. This preliminary action minimizes vibrations during robot operations, maintaining positioning precision while preserving automation benefits
Solution Approach 2:
The control unit continuously adjusts the traveling speed based on real-time road surface condition feedback from the sensor. This feedback mechanism reduces vibrations that would otherwise affect robot positioning precision, enabling both high automation and accurate positioning to coexist
Data Source
AI summary
The present invention provides an unmanned transfer robot system including: an unmanned transfer vehicle capable of traveling on a road surface between a plurality of work stations; a robot that is mounted on the unmanned transfer vehicle; a sensor that is mounted on the robot and that detects a condition of the road surface; and a control unit that controls the robot and the unmanned transfer vehicle. Within an operation range of the robot, the sensor is disposed at a position where the sensor can detect a condition of the road surface in the periphery of the unmanned transfer vehicle, and the control unit controls the unmanned transfer vehicle on the basis of the condition of the road surface acquired by the sensor.