Agricultural Vehicle Steering Transition Control for Operator Comfort
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Solution Overview
Problem
Agricultural field work vehicles with automatic steering systems can cause abrupt movements of the steering mechanism at the start of automatic control, leading to discomfort for the operator due to high-speed transitions, which may be surprising and uncomfortable.
Innovation Solution
The system includes an automatic steering controller that performs suppression processing to gradually adjust steering parameters, such as current values and angular velocities, during the transition from manual to automatic control, ensuring gentle movements of the steering tool.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automatic steering control is activated, then automatic steering performance is improved, but the steering tool moves abruptly causing operator discomfort
Solution Approach 1:
The system performs preliminary suppression of the target steering parameter when transitioning from manual to automatic control mode. The automatic steering controller detects the mode transition and suppresses the target steering parameter before full automatic control engagement, preventing abrupt steering tool movement and ensuring smooth transition that maintains operator comfort.
2Speed
If the steering mechanism operates at high speed, then automatic steering responsiveness is improved, but the steering tool moves abruptly causing discomfort
Solution Approach 1:
The system dynamically changes the target steering parameter based on control mode. When transitioning to automatic control, the controller suppresses the target steering parameter to limit steering mechanism speed and prevent abrupt movements. This parameter adjustment ensures that even when the steering mechanism operates, it does so at controlled speeds that maintain operator comfort while still achieving automatic steering functionality.
Data Source
AI summary
An agricultural field work vehicle includes a steered wheel, a steering mechanism including a steering tool to perform a steering operation to steer the steered wheel, an automatic steering controller configured or programmed to change between a non-controlling state in which the automatic steering is not performed and an automatic control state in which the automatic steering is performed and output at least one target steering parameter, and a steering driver to perform drive control on the steering mechanism based on the at least one target steering parameter when the automatic steering controller is in the automatic control state. The steering tool is configured to change a steering amount thereof in conjunction with the drive control by the steering driver. The automatic steering controller is configured or programmed to suppress the at least one target steering parameter in response to a change from the non-controlling state to the automatic control state.