Work Vehicle Load Control via Slip and Engine Speed Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Advanced Grade Control Systems for work vehicles like crawler dozers do not account for slip conditions and engine speed changes, leading to increased load on the vehicle, potential damage, and an unsafe operating environment.
Innovation Solution
A system and method that determine slip and engine speed conditions to adjust the blade position using a processor, outputting an offset to the Grade Control System to control the load by raising the blade, reducing the load on the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the blade position is automatically adjusted by the Grade Control System to achieve desired grade, then the grading precision is improved, but the load on the work vehicle increases and may cause slipping
Solution Approach 1:
The system continuously monitors engine speed and slip conditions, using this feedback to dynamically adjust blade position. When slip or excessive engine speed is detected, the system automatically raises the blade to reduce load, creating a closed-loop control that prevents harmful conditions while maintaining grading accuracy.
Solution Approach 2:
The blade position is made dynamically adjustable based on real-time operating conditions. The system transitions from static Grade Control System commands to dynamic control that automatically modifies blade position in response to changing load conditions, engine speed, and slip detection.
2Manufacturing precision
If the blade is continuously lowered to achieve desired grade, then the grading accuracy is improved, but the risk of vehicle slipping and damage increases
Solution Approach 1:
The system applies preliminary anti-action by detecting early signs of excessive load through engine speed monitoring and slip detection before actual slipping or damage occurs. It preemptively raises the blade to reduce load, preventing the harmful condition from developing rather than reacting after damage occurs.
Solution Approach 2:
Real-time feedback from engine speed sensors and slip detection mechanisms enables the system to continuously assess load conditions and automatically adjust blade position to maintain safe operating parameters while achieving grading objectives.
3Adaptability or versatility
If multi-DOF blade movement is provided to increase flexibility, then the operational versatility is improved, but the control complexity increases and mental workload on operator increases
Solution Approach 1:
The system enables self-service control where the automated load control system independently monitors operating conditions and adjusts blade position without requiring continuous operator intervention. The system serves itself by automatically compensating for load changes, reducing the operator's mental workload while preserving multi-DOF operational capabilities.
Solution Approach 2:
Automatic feedback control loops monitor engine speed and slip conditions, translating this data into automated blade position adjustments. This eliminates the need for operators to manually interpret multiple parameters and make coordinated adjustments across multiple degrees of freedom.
Data Source
AI summary
Systems and methods are provided for adjusting a position of an implement of a work vehicle to control a load on the work vehicle. The implement is movable by a hydraulic circuit controlled by a Grade Control System. The method includes: determining, by a processor of the work vehicle, a slip condition associated with the work vehicle; determining, by the processor, an engine speed condition associated with the work vehicle; determining, by the processor, an offset to adjust the position of the implement based on at least one of the slip condition and the engine speed condition; and outputting the offset to the Grade Control System to adjust the position of the implement based on the offset to control the load on the work vehicle.