Adaptive Assembly Error Correction Using ML-Guided Instructions

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Solution Overview

Problem

Conventional assembly-line workflows rely heavily on human monitoring and expertise, leading to high likelihoods of undetected errors being propagated downstream, with limited electronic monitoring and no mechanism to learn from mistakes or provide on-the-fly adjustments to compensate for errors in upstream steps, resulting in inefficient product quality and performance.

Innovation Solution

A system utilizing image capture devices and machine-learning models to detect errors, evaluate assembly processes, and dynamically adjust assembly instructions in real-time, providing feedback to operators through various formats such as video, text, or augmented reality, enabling rapid correction and optimization of assembly processes across the production line.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If human monitoring and expertise are used for detecting manufacturing errors, then error detection capability is maintained, but error detection reliability deteriorates due to high likelihood of undetected errors

Engineering Contradiction:
Improveerror detection reliabilityVSAvoidundetected errors
Core Design Contradiction:
ReliabilityVSLoss of information

Solution Approach 1:

The system implements feedback by capturing assembly process data through image capture devices, comparing actual assembly against nominal assembly using machine learning models, and providing corrective feedback to operators in real-time. This closed-loop feedback mechanism ensures errors are detected and corrected reliably without relying solely on human monitoring.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces human monitoring and expertise with an automated machine learning-based inspection system. Image capture devices and machine learning models substitute for human operators in detecting assembly errors, eliminating the reliability issues associated with human error while maintaining continuous monitoring capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If human operators are trained to perform narrow set of tasks, then operational simplicity is improved, but adaptability deteriorates as operators cannot recognize how to modify workflows to rectify errors

Engineering Contradiction:
Improveoperational simplicityVSAvoidworkflow modification capability
Core Design Contradiction:
Ease of operationVSAdaptability or versatility

Solution Approach 1:

The system introduces an intermediary intelligent system that bridges the gap between simple operator tasks and complex error correction decisions. The machine learning model acts as a mediator that analyzes assembly deviations and provides guidance to operators, enabling them to perform simple tasks while the system handles complex adaptability requirements.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system dynamically adapts assembly instructions based on real-time detection of assembly deviations. Rather than requiring operators to have fixed training for all scenarios, the system dynamically generates and updates assembly guidance based on actual assembly conditions, allowing operators to handle varied situations with consistent simple procedures.

Inventive Principle:
Principle #15Dynamics

3Reliability

If conventional electronic monitoring is implemented, then basic monitoring capability is provided, but real-time error correction capability deteriorates due to lack of mechanisms to provide on-the-fly adjustments

Engineering Contradiction:
Improveproduct qualityVSAvoiderror correction time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs preliminary action by detecting assembly deviations early in the assembly process and providing corrective instructions before errors propagate downstream. The machine learning model continuously monitors and predicts potential quality issues, enabling preventive correction rather than reactive remediation.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system implements real-time feedback by continuously monitoring assembly processes, comparing against nominal standards, and providing immediate corrective instructions to operators. This real-time feedback loop enables rapid error correction and prevents defect propagation, significantly improving product quality while minimizing correction time.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11209795B2Assembly error correction for assembly lines
Publication Date: 2021.12.28 NANOTRONICS IMAGING INC
  • US11209795B2 patent drawing
  • US11209795B2 patent drawing
  • US11209795B2 patent drawing

AI summary

Aspects of the disclosed technology provide a computational model that utilizes machine learning for detecting errors during a manual assembly process and determining a sequence of steps to complete the manual assembly process in order to mitigate the detected errors. In some implementations, the disclosed technology evaluates a target object at a step of an assembly process where an error is detected to a nominal object to obtain a comparison. Based on this comparison, a sequence of steps for completion of the assembly process of the target object is obtained. The assembly instructions for creating the target object are adjusted based on this sequence of steps.