Picking Robot Self-Learning for Diverse Targets

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Solution Overview

Problem

In picking systems, automating operations for large varieties of targets is costly and labor-intensive, as traditional teaching methods become impractical and inefficient.

Innovation Solution

A picking system comprising a picking robot, an operation unit for remote operation, a learning unit that learns the robot's movement during remote operation, and an assisting unit that automates or guides the operation based on the learning results, reducing the need for manual teaching and increasing efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If traditional teaching methods are used for automating picking operations, then automation capability is improved, but cost and labor increase significantly when dealing with large varieties of targets

Engineering Contradiction:
Improveautomation capabilityVSAvoidcost and labor
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The picking robot performs self-learning by autonomously observing and recording the operator's manual picking operations. The learning unit automatically captures movement data, gripper force data, and operation sequences without requiring external teaching intervention, enabling the system to teach itself how to perform picking tasks for new target types.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system creates a digital copy of the operator's picking behavior through the learning unit, which records and stores operation data including movement trajectories, gripper positioning, and force application. This copied data is then replayed and executed by the picking robot to replicate human picking actions automatically.

Inventive Principle:
Principle #26Copying

2Manufacturing precision

If manual teaching is performed for each target type, then picking accuracy is improved, but time and productivity deteriorate due to extensive teaching requirements

Engineering Contradiction:
Improvepicking accuracyVSAvoidtime and efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The learning unit continuously records and stores picking operation data during normal manual operations, preparing the knowledge base in advance. When a new target type needs to be picked, the system can quickly retrieve and apply previously learned movement patterns and gripper parameters, eliminating the need for time-consuming teaching procedures for each new target type.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system incorporates feedback mechanisms where the learning unit continuously monitors and records actual picking operations, including successful and unsuccessful attempts. This feedback data is used to refine and improve the stored operation patterns, enabling the robot to learn from experience and improve picking accuracy over time without additional teaching intervention.

Inventive Principle:
Principle #23Feedback

3Ease of operation

If full automation is implemented for diverse targets, then labor reduction is achieved, but system complexity and cost increase

Engineering Contradiction:
Improvelabor reductionVSAvoidsystem complexity and cost
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system implements partial automation where the learning unit and assisting unit handle the complex learning and guidance functions, while the picking robot executes the learned operations. This partial automation approach reduces labor for the most complex aspects (learning and adaptation) while maintaining simplicity in the execution layer, avoiding the need for fully complex autonomous systems.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The learning unit and assisting unit serve as intermediaries between the operator and the picking robot. Instead of direct full automation, these intermediary components capture operator knowledge, process it into actionable instructions, and guide the robot's operations, thereby reducing labor while managing system complexity through a layered architecture.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS11185979B2Picking system and method for controlling same
Publication Date: 2021.11.30 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
  • US11185979B2 patent drawing
  • US11185979B2 patent drawing
  • US11185979B2 patent drawing

AI summary

A picking system including: a picking robot for gripping a target; an operation unit for an operator to perform a remote operation of the picking robot; a learning unit that learns a movement of the picking robot when the target is gripped by the remote operation; and an assisting unit that assists the remote operation based on a learning result of the learning unit.