Industrial Machine Control Period Limits for User Processing
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Solution Overview
Problem
Users of industrial machine control systems face challenges in adding and setting user period processing without access to specifications information, leading to potential errors and system operation issues when user period processing exceeds the control period.
Innovation Solution
A control apparatus with processing circuitry that sets the content of control processing and an upper limit for user period processing, allowing users to perform user period processing within a predetermined control period without violating control-related restrictions, by separating user period processing from control processing and assigning settings between the industrial machine manufacturer and user.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If users are allowed to add and set user period processing freely, then the versatility and adaptability of the control system is improved, but the reliability deteriorates because users may set processing that exceeds the control period without access to specifications information
Solution Approach 1:
The control apparatus acts as an intermediary between the user and the control period constraints. It provides a user period processing upper limit setting that mediates between user flexibility needs and system reliability requirements, preventing users from setting processing that would exceed the control period while still allowing substantial customization.
Solution Approach 2:
The control apparatus performs preliminary action by pre-establishing the upper limit of user period processing before the user sets their processing parameters. This preliminary constraint prevents users from inadvertently setting processing that would exceed the control period, thereby maintaining system reliability while allowing user flexibility within safe boundaries.
2Ease of operation
If the control apparatus provides detailed specifications information to users, then the ease of operation is improved, but the device complexity increases due to additional configuration and management requirements
Solution Approach 1:
The control apparatus extracts and provides only the essential information needed for user operation - specifically the upper limit of user period processing - without exposing users to the full complexity of control period specifications. This selective information provision improves ease of operation while avoiding the complexity burden of detailed specifications management.
3Reliability
If the upper limit of user period processing is set conservatively low, then the reliability is improved by preventing control period violations, but the productivity decreases due to restricted user processing capabilities
Solution Approach 1:
The control apparatus applies dynamics by allowing the upper limit of user period processing to be adjusted and optimized. Rather than using a fixed conservative limit that restricts productivity, the system can dynamically set appropriate limits based on actual control period capacity, thereby maintaining reliability while maximizing user processing capabilities and productivity.
Data Source
AI summary
A control apparatus for performing control processing and user period processing within a control period for an industrial machine includes processing circuitry that sets content of the control processing, and sets an upper limit of the user period processing. The user period processing is different from the control processing.