Excavator Bucket Angle Control for Precise Volume Digging
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Solution Overview
Problem
Excavation operations in excavators are operator-dependent and lack precision, leading to inconsistent outcomes due to varying operator skills and techniques.
Innovation Solution
A method and device that utilize height and bend information to determine optimal orientation angles for excavation based on scan areas, allowing for precise volume determination and efficient digging by controlling the excavator's bucket position and starting point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous excavation techniques are implemented to eliminate operator dependency, then excavation precision and consistency are improved, but system complexity increases
Solution Approach 1:
The autonomous excavation system is divided into separate functional modules: a receiving unit for acquiring height information, a processor for calculating bend information and determining excavation parameters, and a control unit for executing digging operations. This modular segmentation allows each component to perform its specific function independently, improving precision while managing system complexity through organized functional division.
2Productivity
If bend information from multiple orientation angles is analyzed to determine optimal digging volumes, then excavation efficiency is improved, but computational complexity increases
Solution Approach 1:
The system performs preliminary calculations of bend information for multiple orientation angles before actual excavation begins. The processor pre-determines the volumes that can be dug at different orientations and identifies the optimal digging angle in advance. This preliminary analysis allows the excavator to execute pre-planned efficient digging paths without real-time computational delays during operation.
Solution Approach 2:
The system varies the orientation angle parameter to analyze bend information from multiple perspectives. By calculating how the target object's bend characteristics change with different orientation angles, the system identifies the angle that maximizes diggable volume. This parameter variation approach systematically optimizes excavation efficiency without requiring overly complex real-time computation.
3Quantity of substance
If the excavator determines optimal orientation angles based on volumes that can be dug, then material containment in bucket is improved, but measurement and calculation requirements increase
Solution Approach 1:
The system replaces traditional mechanical volume measurement methods with optical sensing and computational analysis. Height information is obtained through non-contact measurement, and the processor calculates three-dimensional bend information and diggable volumes based on these measurements. This substitution allows precise volume determination without complex physical measurement apparatus, enabling accurate identification of optimal digging angles for maximum material containment.
Data Source
AI summary
A method for controlling an excavator includes obtaining height information indicating a height according to a plane coordinate of a target object; obtaining, based on the height information, bend information of the target object according to a plurality of orientation angles which are angles between a reference direction and orientations direction of a bucket; determining, based on the bend information, volumes which can be dug corresponding to the plurality of orientation angles; determining, based on the volumes which can be dug, one or more orientation angles among the plurality of orientation angles; and digging according to the one or more orientation angles.