Processing Apparatus Offset Control for Post-Adjustment Variance

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Solution Overview

Problem

Processing apparatuses experience abrupt variance in results due to adjustments such as maintenance or calibration, leading to potential product defects without effective feedback mechanisms.

Innovation Solution

A management method that sets an offset value to control the processing apparatus, reducing variance between results before and after adjustments by gradually decreasing the offset value and incorporating feedback to maintain optimal processing conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If maintenance or calibration is performed on the processing apparatus, then the apparatus state is improved or restored, but abrupt variance occurs in processing results between before and after the adjustment

Engineering Contradiction:

Improveprocessing result consistencyVSAvoidprocessing result variance

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The management apparatus determines an offset value before the adjustment is actually performed (predictive approach). This preliminary determination allows the system to prepare compensation parameters in advance, so when the adjustment occurs, the processing results can be corrected using the pre-calculated offset, preventing abrupt variance rather than reacting after the problem occurs.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The management apparatus collects processing results from multiple processing units, determines offset values based on these results, and feeds back the offset values to control the processing apparatus. This feedback loop ensures that any variance introduced by adjustments is detected and compensated for, maintaining consistency in processing results across different operational states.

Inventive Principle:

Principle #23Feedback

2Manufacturing precision

If feedback is implemented to maintain processing consistency, then processing result stability is improved, but additional processing steps and time are required

Engineering Contradiction:

Improveprocessing result stabilityVSAvoidfeedback processing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

Offset values are determined in advance before adjustments are performed, rather than waiting to measure variance after the fact. This preliminary calculation of compensation parameters reduces the time needed for feedback processing, as the offset values are already prepared when processing resumes after maintenance or calibration.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system changes the parameter approach by determining offset values based on processing results collected before the adjustment, rather than requiring extensive post-adjustment measurements. This parameter change in the feedback timing and methodology reduces the overall time investment required for maintaining processing consistency.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS11385549B2Management method of managing processing apparatus by setting offset to reduce variance, management apparatus, computer readable medium, and article manufacturing method

Publication Date: 2022.07.12 CANON KK

AI summary

A management method of managing a processing apparatus that performs processing of a member, includes setting, in a case where adjustment of the processing apparatus is performed, an offset value to control the processing apparatus such that variance between results of processing by the processing apparatus before and after the adjustment is reduced.