Work Machine Movement Mitigation for Accurate Autonomous Digging
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Solution Overview
Problem
Construction equipment experiences unintentional movements during operations, leading to inefficiencies such as mis-cutting and mis-dumping, particularly when an operator is not present to make adjustments.
Innovation Solution
A system with sensor circuitry and processing circuitry to detect and mitigate unwanted movements by providing control signals, including mitigation and compensation actions such as lifting the boom, dumping the bucket, and adjusting track movements to prevent or correct deviations from the desired work location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autonomous operation is implemented without human operator, then productivity is improved, but unintentional movement occurs causing mis-cutting and mis-dumping
Solution Approach 1:
The system continuously monitors machine position, movement, and operational parameters using sensors, and automatically adjusts control signals to correct unintentional movements. This closed-loop feedback mechanism maintains work location accuracy during autonomous operation by detecting deviations and compensating in real-time.
Solution Approach 2:
The machine performs self-correction of unintentional movements through automated control systems that detect position errors and generate compensatory control signals without human intervention. The system serves itself by autonomously maintaining positioning accuracy during digging and dumping operations.
2Power
If reaction force from digging is not compensated, then digging power is maximized, but machine is dragged forward causing unintentional movement
Solution Approach 1:
The control system applies counteracting forces before or during digging operations to prevent the machine from being dragged forward by reaction forces. By predicting and compensating for these forces in advance, the system maintains position stability while allowing maximum digging power to be applied to the work.
Solution Approach 2:
The system generates opposing control forces that counterbalance the reaction forces generated during digging. These counter-forces are applied through the machine's control system to offset the dragging effect and maintain stable machine position during high-power digging operations.
3Manufacturing precision
If operator makes manual adjustments, then unintentional movement is corrected, but operational efficiency is reduced
Solution Approach 1:
The machine autonomously detects and corrects its own position deviations through self-monitoring sensors and self-generated control signals. This eliminates the need for continuous manual intervention while maintaining work location accuracy, thereby preserving operational efficiency during autonomous operation.
Solution Approach 2:
The system implements automated feedback loops that continuously monitor machine position and automatically adjust control parameters to correct deviations. This replaces manual operator adjustments with automated real-time corrections, maintaining precision without reducing productivity.
Data Source
AI summary
An apparatus can include sensor circuitry to detect a machine movement of a work machine along a surface. The apparatus can also include processing circuitry to receive machine movement information or force-related information and to determine probability that unwanted movement will occur. The processing circuitry can also provide a mitigation control signal to mitigate unwanted movement responsive to determining that the probability that unwanted movement will occur is above a threshold.