Driving Device Control for Manufacturing System Time Lag Reduction
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Solution Overview
Problem
Conventional manufacturing systems experience time lags between commands from upper systems to lower systems, leading to inefficiencies and quality issues due to delays in detecting and compensating for errors across multiple manufacturing steps.
Innovation Solution
A manufacturing system where a driving device, equipped with an inverter and sensor, uses step result information to adjust the control parameters of manufacturing machines, such as rotational speed and torque, to quickly align with target values, reducing time lags and improving manufacturing efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upper system provides target values to the lower system through multiple conversion steps, then the manufacturing process can be controlled, but time lags occur between commands and execution
Solution Approach 1:
The patent extracts the control function from the upper system and places it directly in the lower system. The lower system now independently determines control parameters (rotational speed, torque) based on step result information, eliminating the time-consuming conversion and communication loops between upper and lower systems while maintaining control accuracy.
Solution Approach 2:
The lower system serves itself by autonomously determining control parameters based on step result information. Instead of receiving processed target values from the upper system, the lower system independently converts step results into actionable control parameters, reducing dependency on the upper system and eliminating time lags.
2Adaptability or versatility
If multiple conversion steps are performed between upper and lower systems, then information can be adapted, but manufacturing efficiency decreases due to delays
Solution Approach 1:
The lower system performs the adaptation function itself by directly converting step result information into control parameters. This self-service approach eliminates the need for multiple conversion steps through the upper system, maintaining adaptability while significantly improving manufacturing efficiency.
3Manufacturing precision
If error compensation is performed in downstream steps, then product quality can be maintained, but the burden on downstream steps increases
Solution Approach 1:
The patent applies preliminary action by having the lower system adjust control parameters in real-time based on step result information from the same step. This prevents errors from accumulating and requiring compensation in downstream steps, maintaining product quality while reducing the burden on downstream processes.
Data Source
AI summary
A manufacturing system 10 is configured to include a driving device 4 configured to drive a manufacturing machine 5 in a step pertaining to product manufacture in a predetermined production management system, the driving device 4 driving the manufacturing machine 5 in the step in response to predetermined information obtained related to a state of the step.