Construction Equipment Bucket Posture Control
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Solution Overview
Problem
Conventional construction equipment struggles with maintaining evenness and efficiency when excavating inclined surfaces, as operators need to manually adjust bucket tilting and rotating angles, requiring high skill levels and often resulting in uneven surfaces due to limited automation in controlling these movements.
Innovation Solution
The construction equipment incorporates a tilting actuator and rotating actuator, along with an electronic control unit that calculates and adjusts the bucket's posture based on location and plane information, ensuring the bucket tip remains in contact with the inclined surface and maintains a vertical width direction, thereby automating the tilting and rotating operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual adjustment of bucket tilting and rotating angles is used, then operational flexibility is maintained, but excavation efficiency decreases and surface evenness deteriorates
Solution Approach 1:
The system enables self-service automation where the electronic control unit automatically calculates and adjusts bucket tilting and rotating angles based on GPS location data and plane information, without requiring continuous manual intervention from the operator. The automation system serves itself by using sensor data to autonomously control the actuators, resolving the contradiction between automation extent and excavation efficiency.
Solution Approach 2:
The system implements feedback control by continuously monitoring the bucket's position and orientation through GPS and posture sensors, comparing the actual posture with the target posture calculated by the electronic control unit, and automatically adjusting the tilting and rotating actuators to minimize deviation. This closed-loop feedback mechanism enables high automation while maintaining precise control for efficient excavation.
2Manufacturing precision
If high skill level operators manually control bucket angles, then some evenness can be achieved, but time consumption increases and consistency deteriorates
Solution Approach 1:
The system replaces the mechanical skill-based manual control with an electronic control system that uses GPS location data, plane information, and automated calculations to determine optimal bucket angles. The electronic control unit substitutes the operator's manual judgment and physical adjustment with algorithmic computation and automated actuator control, achieving superior surface evenness without time loss.
Solution Approach 2:
The system performs preliminary calculation of the target bucket posture before execution by pre-processing GPS location information and plane data to determine the optimal tilting and rotating angles in advance. This preliminary action enables the bucket to maintain correct orientation throughout the excavation process, ensuring surface evenness while reducing adjustment time during operation.
3Loss of time
If automated posture control is implemented, then excavation time is reduced, but system complexity increases
Solution Approach 1:
The electronic control unit serves multiple functions: it processes GPS location data, calculates plane information, determines target bucket posture, controls tilting actuators, controls rotating actuators, and monitors bucket posture. By consolidating these multiple functions into a single multi-functional control unit, the system achieves automated posture control that reduces excavation time while limiting the increase in overall system complexity through functional integration.
Solution Approach 2:
The system introduces an intermediary electronic control unit that acts as a mediator between the raw GPS/location data and the physical actuators. This intermediary processes information, calculates target angles, and translates complex control requirements into simple actuator commands, reducing the complexity burden on both the sensing system and the actuation system while enabling automated time-efficient excavation.
4Ease of operation
If operators manually adjust bucket angles for inclined surfaces, then adaptability is maintained, but operational ease decreases
Solution Approach 1:
The system enables self-service adaptability where the electronic control unit automatically adjusts bucket posture to match different work area geometries by processing GPS data and plane information. The system serves itself in adapting to inclined surfaces, vertical surfaces, and other geometries without requiring operator skill or manual adjustment, thereby improving operational ease while maintaining full adaptability to various surface types.
Data Source
AI summary
A construction equipment includes a work machine including a boom rotatable with respect to an upper rotating body, a rotatable arm, a rotatable bucket, a tilt rotator including of a tilting actuator, and a rotating actuator; an operation lever for outputting an operation signal corresponding to an operation amount of a driver; a location information providing unit for providing location information and posture information of the work machine; a work setting unit for setting a work area of the work machine, and providing plane information of the work area; and an electronic control unit for controlling the work machine according to a signal inputted from at least one of the operation lever, the work setting unit and the location information providing unit, wherein the electronic control unit controls the posture of the bucket so that the tip of the bucket contacts the work area.