Robot Dynamics Adjustment for Human Presence Prediction
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Solution Overview
Problem
Industrial robots' operating zones are unsafe for humans due to their large size and unpredictable movements, necessitating power-down during human intervention, which limits observation and interaction, hindering diagnosis and process improvement.
Innovation Solution
A computer-implemented method that captures sensor data to generate a dynamic model of a user within the operating zone, predicts user actions, and adjusts robot dynamics to ensure safety and facilitate interaction, allowing humans to safely occupy the zone while the robot continues operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the robot is powered down to allow human entry into the operating zone, then human safety is improved, but the ability to observe and interact with the robot is worsened
Solution Approach 1:
The robot dynamically adjusts its operational parameters (speed, acceleration, power) based on the presence and actions of humans in the operating zone. The controller continuously modifies robot dynamics to maintain safety while keeping the robot powered on and operational, enabling real-time observation and interaction without compromising human safety.
2Productivity
If the robot operates at full speed and power, then productivity is improved, but human safety in the operating zone is worsened
Solution Approach 1:
The robot applies different operational characteristics to different spatial zones within the operating area. When a human is detected in a particular zone, the robot modifies its dynamics locally (reducing speed, acceleration, or power) in that specific region while maintaining full operational capacity in other areas, thus preserving overall productivity while ensuring local safety.
3Productivity
If the robot operates continuously without power-down, then productivity is improved, but the risk to humans in the operating zone is worsened
Solution Approach 1:
The system implements continuous feedback through sensors that detect human presence in the operating zone. Based on this feedback, the controller automatically adjusts robot dynamics in real-time, modifying speed, acceleration, or power levels when humans are present, and restoring full operational parameters when the zone is clear, enabling continuous operation with adaptive safety management.
Data Source
AI summary
A robot system models the behavior of a user when the user occupies an operating zone associated with a robot. The robot system predicts future behaviors of the user, and then determines whether those predicted behaviors interfere with anticipated behaviors of the robot. When such interference may occur, the robot system generates dynamics adjustments that can be implemented by the robot to avoid such interference. The robot system may also generate dynamics adjustments that can be implemented by the user to avoid such interference.