Work Vehicle Auto Turning with Integrated Steering-Articulation Control
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Solution Overview
Problem
Existing vehicle auto turning control systems for work vehicles with multiple pivot axes struggle to seamlessly integrate auto articulation and auto steering functions, leading to inefficiencies in angle adjustments and control precision.
Innovation Solution
A method and system that utilize a controller to receive signals from joysticks and sensors, calculate desired angle changes, and adjust articulation and steering angles based on errors detected by sensors, allowing for seamless auto steering and auto articulation operations by integrating closed-loop control mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual control methods are used for articulation and steering, then operator control is maintained, but control precision and efficiency deteriorate
Solution Approach 1:
The patent implements closed-loop feedback control by continuously monitoring actual articulation and steering angles through sensors and comparing them with desired angles calculated from joystick positions. The control system automatically adjusts the angles by sending correction signals to actuators, eliminating the need for manual coordination while maintaining high precision. This feedback mechanism resolves the contradiction by automating the control process without requiring complex manual intervention.
2Adaptability or versatility
If separate control mechanisms are used for articulation and steering, then individual control is possible, but integration and seamless operation deteriorate
Solution Approach 1:
The patent merges articulation control and steering control into a single integrated control system that processes both functions simultaneously. The controller receives joystick inputs for both articulation and steering, calculates desired angles for both axes, and coordinates their execution through a unified feedback loop. This integration allows seamless operation where articulation and steering work together harmoniously, resolving the contradiction by combining separate control mechanisms into one cohesive system that maintains individual control capabilities while enabling smooth coordinated operation.
3Extent of automation
If automated control is implemented, then operator workload is reduced, but system complexity and potential failure points increase
Solution Approach 1:
The patent employs feedback control that continuously monitors actual angles through sensors and automatically corrects deviations from desired angles. This closed-loop mechanism enhances reliability by detecting and compensating for errors in real-time, preventing system failures before they occur. The feedback system provides redundant verification of control accuracy, ensuring that automated operation remains reliable even as automation level increases, thus resolving the contradiction between automation extent and system reliability.
Data Source
AI summary
The present disclosure provides methods for adjusting steering angle and articulation angle in an auto steering operation of a work vehicle. The percentage of travel of an articulation joystick of the work vehicle at least partially determines an articulation desired angle change, which can be used to calculate an articulation desired angle and a steering desired angle change. The difference between the articulation desired angle and an articulation angle detected by an articulation angle sensor is used to adjust the articulation angle. The steering desired angle change can be used to calculate a steering desired angle. The difference between the steering desired angle and a steering angle detected by a steering angle sensor is used to adjust the steering angle.