Work Machine Controller for Coordinated Loading Operations

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Solution Overview

Problem

Existing systems for controlling work machines and conveyance vehicles lack efficient coordination, leading to suboptimal performance in loading operations, as they rely on manual control and do not effectively determine when loading is complete.

Innovation Solution

A control system that includes a controller for the work machine, which acquires and determines the loading amount on the conveyance vehicle, outputs a withdraw command when loading is finished, and verifies the conveyance vehicle's withdrawal, ensuring coordinated operation between the work machine and the conveyance vehicle.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual control is used for loading operations, then operational flexibility is maintained, but work efficiency and coordination between work machine and conveyance vehicle deteriorate

Engineering Contradiction:
Improvework efficiencyVSAvoidoperational flexibility
Core Design Contradiction:
ProductivityVSEase of operation

Solution Approach 1:

The control system continuously monitors the loading amount through sensors and provides feedback to the controller. The controller compares the detected loading amount with the target loading amount and automatically adjusts the work machine's operations accordingly. This feedback mechanism enables automatic control that improves work efficiency while maintaining coordinated operation between the work machine and conveyance vehicle.

Inventive Principle:
Principle #23Feedback

2Productivity

If automatic control is implemented for loading operations, then work efficiency is improved, but system complexity increases

Engineering Contradiction:
Improvework efficiencyVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The controller serves multiple functions: it controls the work machine's loading operations, monitors the loading amount through sensor data, determines when loading is complete by comparing with target values, and coordinates with the conveyance vehicle. By consolidating these diverse functions into a single multi-functional controller, the system achieves automatic control for improved efficiency without proportionally increasing overall system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If loading completion is determined by fixed criteria, then control simplicity is maintained, but adaptability to varying loading requirements deteriorates

Engineering Contradiction:
Improveadaptability to loading requirementsVSAvoidcontrol complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The control system dynamically determines loading completion by continuously comparing the detected loading amount with the target loading amount. The controller can adapt the target loading amount based on different conveyance vehicles and loading requirements. This dynamic adjustment mechanism provides adaptability to varying loading requirements while maintaining relatively simple control logic through straightforward comparison operations.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS11802391B2System and method for controlling work machine
Publication Date: 2023.10.31 KOMATSU LTD
  • US11802391B2 patent drawing
  • US11802391B2 patent drawing
  • US11802391B2 patent drawing

AI summary

A system controls a work machine that loads materials onto a conveyance vehicle. The system includes a controller. The controller performs a loading work by the work machine when the conveyance vehicle is stopped at a predetermined loading position. The controller acquires a loading amount onto the conveyance vehicle. The controller determines whether the loading work is finished based on the loading amount. The controller outputs a withdraw command to the conveyance vehicle to withdraw from the loading position upon determining that the loading work is finished. The controller determines whether the conveyance vehicle has withdrawn after outputting the withdraw command.