Synchronization Error Handling in Aperiodic Apparatus Control
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Solution Overview
Problem
Ensuring safety of synchronization processing in a system, particularly in environments where aperiodic communication, such as 5G, is used, is challenging due to potential fluctuations in communication timing that can disrupt periodic communication.
Innovation Solution
The apparatus control system employs time synchronization using a global clock and aperiodic communication, with error handling mechanisms to manage synchronization errors, including communication and time synchronization errors, by stopping or warning specific apparatuses based on error levels to maintain safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If aperiodic communication (e.g., 5G) is used to enable flexible and high-speed data transmission, then communication speed and flexibility are improved, but communication timing fluctuations occur that can disrupt periodic communication and synchronization
Solution Approach 1:
The communication system is segmented into two distinct communication paths: a first communication path dedicated to periodic communication for synchronization, and a second communication path for aperiodic communication. This segmentation allows each path to be optimized independently, with the periodic path ensuring timing reliability while the aperiodic path provides high-speed flexibility.
Solution Approach 2:
A synchronization server acts as an intermediary that manages time synchronization across the system. It generates synchronization packets containing precise timing information and distributes them through the periodic communication path, mediating between the aperiodic communication's timing variability and the system's synchronization requirements.
2Reliability
If error handling mechanisms are implemented to manage synchronization errors, then system safety is improved, but system complexity increases due to additional monitoring and intervention components
Solution Approach 1:
The system performs preliminary error detection by monitoring synchronization packet reception status and timing information before critical synchronization errors can occur. This allows the system to identify potential issues early and trigger appropriate error handling procedures proactively, rather than reactively.
Solution Approach 2:
A feedback mechanism continuously monitors the reception of synchronization packets and timing information from the synchronization server. When deviations or errors are detected, the feedback loop triggers error handling procedures, creating a closed-loop control system that automatically maintains synchronization reliability.
Data Source
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AI summary
An apparatus control system according to an aspect of the present disclosure includes: an acquisition unit configured to acquire communication data transmitted through aperiodic communication between a local apparatus and a controller configured to control the local apparatus; a determination unit configured to determine, based on the communication data, whether a synchronization error has occurred that is an error related to synchronization between the local apparatus and the controller; and an error handling unit configured to perform error handling associated with at least one of the local apparatus and the controller when the synchronization error has occurred.