Excavator Bucket Control Device for Autonomous Posture Maintenance
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Solution Overview
Problem
Existing work equipment control systems require explicit operator manipulation to maintain a constant excavating posture, which can lead to inefficiencies and operator discomfort during excavation work.
Innovation Solution
A control device that includes a work equipment state specifying unit, a control reference specifying unit, and a bucket control unit to automatically maintain a constant angle of the bucket by generating control commands based on the distance between the work equipment and a control reference, allowing for autonomous posture control during excavation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automatic bucket control is implemented to maintain constant excavating posture, then operator manipulation burden is reduced, but device complexity increases
Solution Approach 1:
The bucket control unit automatically adjusts the bucket angle to maintain constant excavating posture without operator intervention. The system monitors the distance between work equipment and control reference, and autonomously generates control commands to keep the bucket at the optimal angle during excavation, making the system self-regulating
Solution Approach 2:
The control system continuously monitors the distance between work equipment and control reference, and uses this feedback to adjust the bucket angle. When the distance changes, the system automatically modifies the bucket posture to maintain the constant excavating angle, creating a closed-loop control system
2Productivity
If explicit operator manipulation is required to control bucket angle, then control precision is maintained, but productivity decreases
Solution Approach 1:
The system automatically maintains the constant excavating posture by monitoring distance and autonomously adjusting bucket angle, eliminating the need for continuous operator manipulation while preserving control precision through automated feedback mechanisms
Solution Approach 2:
The patent replaces manual operator control with an automated control system that uses distance measurements and control algorithms to maintain bucket angle, substituting mechanical/operator-based control with an automated electronic control system
Data Source
AI summary
A work equipment control device includes a work equipment state specifying unit, a control reference specifying unit, a distance specifying unit, and a bucket control unit. The work equipment state specifying unit specifies a state of work equipment. The control reference specifying unit specifies a control reference of the work equipment. The distance specifying unit specifies a distance between the work equipment and the control reference. The bucket control unit generates a control command to drive a bucket such that the state of the work equipment is maintained when the distance between the work equipment and the control reference is less than a bucket control start threshold.