Steering Handle Override for Reference-Line Auto-Steered Working Vehicles
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Solution Overview
Problem
Conventional agricultural working machines lack efficient automatic steering systems that can accurately follow set reference lines, especially when there are errors in vehicle positioning, leading to deviations and reduced operational efficiency.
Innovation Solution
The implementation of a working vehicle with a steering handle for manual or automatic steering, a positioning device for precise location detection, and a controller that adjusts the steering based on calculated vehicle position and reference lines, using correction switches to offset errors and maintain alignment with scheduled traveling lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic steering is implemented without operator intervention capability, then automation level increases, but operator safety and control are compromised
Solution Approach 1:
The steering system dynamically switches between automatic and manual modes based on operator needs. The steering handle can be manually operated at any time during automatic steering to override the automatic control, creating a flexible system that adapts to changing operational requirements while maintaining both automation benefits and operator control capability
Solution Approach 2:
The steering handle serves as an intermediary element that bridges automatic and manual control systems. It can function as part of the automatic steering mechanism or be directly manipulated by the operator, allowing seamless transition between control modes without requiring separate independent systems
2Measurement precision
If correction switches are added to adjust positioning errors, then steering precision improves, but device complexity increases
Solution Approach 1:
The correction switches are integrated into the existing steering handle assembly, merging the correction function with the primary steering control. This consolidation allows positioning error correction to be achieved through the same interface used for normal steering operations, reducing overall system complexity while maintaining high precision
Solution Approach 2:
The operator directly corrects positioning errors by manually operating the steering handle in response to positioning system feedback. The system enables self-correction through simple manual input rather than requiring complex automated correction mechanisms, keeping the control system simple while achieving high accuracy
Data Source
AI summary
A working vehicle includes a steering handle, a vehicle body to travel with either manual steering by the steering handle or automatic steering of the steering handle based on a traveling reference line, an operator provided to the vehicle body, and a controller to terminate the automatic steering when the operator is operated under the automatic steering.