Robot Arrangement Control Under Parallel Safety Constraints
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Solution Overview
Problem
Existing methods for controlling robot assemblies with multiple parallel safety monitoring functions require manual and time-consuming adjustments of process parameters to avoid violations, leading to errors and inefficiencies.
Innovation Solution
A method and system that monitor and adapt process parameters using a control arrangement with selection rules to avoid violations of safety monitoring functions, allowing for automated adjustment of parameters to prevent safety responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple parallel safety monitoring functions are activated to ensure robot safety, then safety reliability is improved, but the complexity of manual parameter adjustment increases and error-prone manual intervention is required
Solution Approach 1:
The control arrangement automatically selects and adapts process parameters without manual intervention. The system monitors multiple safety functions simultaneously and self-adjusts parameters like speed to prevent violations, eliminating the need for error-prone manual parameter tuning while maintaining high safety standards
Solution Approach 2:
The system dynamically changes process parameters (such as robot speed) based on real-time monitoring of multiple safety functions. The control arrangement automatically adjusts parameters to keep the robot operating within safe limits defined by the most restrictive active safety monitoring function
2Reliability
If manual adjustment of process parameters is performed to avoid safety monitoring function violations, then safety compliance is improved, but time consumption increases and productivity decreases
Solution Approach 1:
The control arrangement performs automatic parameter selection and adaptation without requiring operator intervention. This eliminates time-consuming manual adjustments while ensuring continuous compliance with safety monitoring functions, thereby maintaining high productivity alongside safety compliance
Solution Approach 2:
The system continuously monitors the status of multiple safety monitoring functions and uses this feedback to automatically adjust process parameters in real-time. This closed-loop control ensures safety compliance is maintained dynamically without interrupting production flow or requiring manual re-adjustments
Data Source
AI summary
A method for controlling a robot arrangement having at least one robot includes monitoring the robot arrangement using multiple safety monitoring functions activated in parallel, and steps, which may be repeated multiple times during execution of an application of the robot arrangement, of: selecting a subset of process parameters from a prescribed set of process parameters on the basis of a prescribed rule arrangement having at least one selection rule, and adjusting this selected subset of process parameters to avoid violation of at least one of the safety monitoring functions.