Bucket Discharge Position Control for Consistent Load Height
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Solution Overview
Problem
Existing load discharge systems struggle to maintain consistent load height during repeated discharge operations, leading to irregularities in the loaded shape.
Innovation Solution
A load discharge system that includes a controller to acquire load and container position information, calculate a target discharge position, and control the work machine's operation to reduce height variations by adjusting the bucket's angle and position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the bucket angle is finely adjusted to maintain constant load height, then the load height consistency is improved, but the control difficulty increases
Solution Approach 1:
The system changes the control parameter from bucket angle to discharge position coordinates (X, Y, Z). The controller calculates target discharge positions based on container position and load amount, then controls the work machine to discharge at these calculated positions, avoiding the need for fine bucket angle adjustments while maintaining load height consistency
Solution Approach 2:
The manual or manual-assisted bucket angle adjustment is replaced with an automated control system that calculates discharge positions using container position information and load amount data. The controller automatically generates discharge trajectories and controls the work machine, substituting complex mechanical control with computational control
2Ease of operation
If the bucket angle is not adjusted, then the control simplicity is maintained, but the load height variation increases
Solution Approach 1:
The system uses the work machine's own sensors and control capabilities to automatically determine and execute discharge positions. The controller acquires container position information and load amount data, calculates appropriate discharge positions, and controls the discharge operation autonomously without requiring external intervention or complex manual adjustments
Solution Approach 2:
The system implements feedback control by continuously acquiring container position information and load amount data, comparing the current state with target values, and adjusting the discharge position calculations accordingly. This feedback mechanism ensures load height consistency while maintaining control simplicity
3Productivity
If repeated discharge operations are performed without position calculation, then the operation speed is maintained, but the load shape irregularity increases
Solution Approach 1:
The system performs preliminary calculation of target discharge positions before executing the discharge operation. The controller calculates the optimal discharge position based on container position and load amount data in advance, then guides the work machine to discharge at this pre-calculated position, ensuring consistent load shape while maintaining operational efficiency
Solution Approach 2:
The discharge position is made dynamic and adaptive rather than fixed. The controller continuously updates target discharge positions based on real-time container position information and load amount data, allowing the system to adapt to changing conditions during repeated discharge operations while maintaining load shape regularity
Data Source
AI summary
A load discharge system for loading work in which a discharge operation of discharging a load in a bucket of a work machine into a container is repeatedly performed. The load discharge system includes a controller for controlling the operation of the work machine, the controller acquires information on an amount of load in the bucket of the work machine and acquires information on a position of the container. The controller calculates a target discharge position that is a target position for the discharge operation using the information on the position of the container and the information on the amount of load in the bucket.