Work Vehicle Implement Orientation Control via Modified Error Value
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Solution Overview
Problem
Existing systems for controlling implement orientation in work vehicles, such as wheel loaders, suffer from slow response times, which can hinder operation when moving implements with supplies or particulate matter between positions.
Innovation Solution
A system comprising a vehicle chassis, loader arms, lift actuators, tilt actuators, and sensors, with a computing system that adjusts the implement's vertical position and angle by determining a modified error value to control the tilt actuator, enabling quicker orientation adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If existing systems control implement orientation using traditional feedback mechanisms, then the implement angle can be maintained, but the response time is slow which hinders operational efficiency
Solution Approach 1:
The system pre-calculates the relationship between implement vertical position and required tilt angle adjustments. By establishing this relationship in advance through the determined relationship data, the control system can immediately apply appropriate tilt corrections when vertical position changes occur, eliminating the need for slow iterative feedback adjustments and achieving faster response times.
Solution Approach 2:
The patent replaces traditional mechanical feedback mechanisms with a computational approach. Instead of using complex mechanical linkages and sensors to continuously monitor and adjust implement orientation, the system uses a computing system to calculate and determine the relationship between vertical position and tilt angle, then controls the tilt actuator based on these calculated values, significantly improving response speed.
2Manufacturing precision
If the tilt actuator is controlled based on actual error value alone, then the control is accurate, but the adjustment speed is insufficient to prevent material spillage
Solution Approach 1:
The system introduces determined relationship data as an intermediary between the actual error value and the tilt actuator control. This relationship data, which establishes the correlation between implement vertical position and required tilt adjustments, allows the control system to anticipate needed adjustments and apply them more rapidly while maintaining accuracy, preventing material spillage during position transitions.
Data Source
AI summary
A system for controlling implement orientation of a work vehicle includes a computing system configured to control an operation of a lift actuator of the vehicle such that an implement of the vehicle is moved from a first vertical position relative to a second vertical position. Furthermore, the computing system is configured to monitor the angle of the implement as the implement is moved from the first vertical position to the second vertical position. Additionally, the computing system is configured to determine an actual error value between the monitored angle and a selected angle of the implement. Moreover, the computing system is configured to determine a modified error value that is different than the actual error value and control an operation of a tilt actuator of the vehicle to adjust the angle of the implement relative to the driving surface based on the modified error value.