Work Machine Control with Ground Stability Pre-Check

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Solution Overview

Problem

Existing automated control systems for work machines like excavators face challenges in maintaining workability when operating on unstable ground, as they assume stable terrain.

Innovation Solution

An automated control system for work machines that includes a stability determination section to assess the ground stability before executing automated work control, ensuring safe and effective operation even on uneven terrain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If automated control is executed without ground stability assessment, then work machine can operate continuously, but workability deteriorates due to unstable ground

Engineering Contradiction:
ImproveworkabilityVSAvoidground stability
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The stability determination section performs ground stability assessment before executing automated work control. This preliminary action detects potential instability issues in advance, allowing the system to prevent automated control execution on unstable ground, thereby avoiding workability deterioration while maintaining continuous operation capability on stable ground

Inventive Principle:
Principle #10Preliminary action

2Productivity

If stability determination is performed before automated work control, then workability is maintained, but control system complexity increases

Engineering Contradiction:
ImproveworkabilityVSAvoidcontrol system complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The control device integrates multiple functions including automated traveling control, automated work control, and ground stability determination within a single unified system. This multi-functionality approach allows the control device to perform stability assessment and automated control execution without requiring separate dedicated hardware systems, thereby maintaining workability while minimizing the increase in overall system complexity

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

Data Source

PatentUS20250163678A1Automated control system for work machine
Publication Date: 2025.05.22 HITACHI CONSTRUCTION MACHINERY CO LTD
  • US20250163678A1 patent drawing
  • US20250163678A1 patent drawing
  • US20250163678A1 patent drawing

AI summary

Provided is an automated control system for a work machine capable of suppressing deterioration of the workability in automated work caused by instability of the ground for the work machine. An automated traveling control section 703 performs automated traveling of the work machine; an automated work control section (automated excavation control section 704) performs automated work of the work machine; and a stability determination section702 determines stability of ground for the work machine. When execution of automated traveling control by the automated traveling control section 703 is to be followed by execution of automated work control by the automated work control section (automated excavation control section 704), stability determination by the stability determination section 702 is executed before executing the automated work control, and automated control of the work machine is executed on the basis of a determination result obtained by the stability determination section 702.