Manufacturing Control Using Intermediate Prediction Results
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Solution Overview
Problem
In manufacturing devices with short processing cycles, prediction control computations are often delayed due to resource allocation, leading to incomplete processing and inadequate control timing, which can result in delayed or inappropriate operation of the manufacturing device.
Innovation Solution
A control device that includes a hardware processor and memory, which executes instructions to start prediction model computation, compute remaining processing time, and determine if the command value can be determined within the control timing. If within the timing, the computation continues until completion; otherwise, it uses an intermediate result to control the manufacturing device, ensuring timely operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If computation processing of the prediction model is performed completely, then prediction accuracy is improved, but processing time increases and may exceed control timing
Solution Approach 1:
The patent applies partial action by using intermediate computation results when the full prediction model computation cannot be completed within control timing. The control device determines whether computation can be completed in time, and if not, it uses the intermediate result obtained so far to generate control commands, accepting a partial rather than complete computation to meet timing requirements.
Solution Approach 2:
The patent implements dynamic adjustment of computation depth based on timing conditions. The system dynamically determines whether to continue computation to completion or stop at an intermediate stage based on whether the control timing allows, making the computation process adaptive rather than static.
2Reliability
If computation resources are allocated to prediction control, then prediction control accuracy is improved, but other processing may be delayed
Solution Approach 1:
The system uses partial computation results when full computation cannot be completed, allowing prediction control to proceed with available data rather than waiting for complete computation. This prevents bottlenecking of overall processing throughput while still providing timely control commands.
3Loss of time
If computation processing is stopped early, then control timing is met, but prediction accuracy deteriorates
Solution Approach 1:
The patent implements feedback by using the intermediate computation result as the basis for control commands when full computation cannot be completed. The system feeds back the available computational state into the control decision-making process, allowing timely control actions based on the best available prediction data.
Data Source
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Figure 3
Figure 4A~4B
AI summary
Prediction control of a manufacturing device is appropriately performed. A control device according to an aspect of the present invention executes a step of starting a computation processing of a prediction model; a step of computing a remaining processing time until the computation processing is completed after starting the computation processing of the prediction model; a step of determining whether the determination of the command value based on an output obtained from the prediction model is made within a control timing for controlling the operation of manufacturing by the manufacturing device, on the basis of a computed remaining processing time; and a step of stopping, when it is determined that the determination of the command value is not made within the control timing, the computation processing of the prediction model, determining the command value on the basis of a value of an intermediate result of the computation processing, and controlling the operation of the manufacturing device on the basis of the determined command value.