Agricultural Steering Control for Axle Oscillation Limits
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Solution Overview
Problem
Agricultural vehicles with oscillating or resiliently mounted vehicle axles face undesired contact between steerable wheels and surrounding bodywork components during steering, leading to potential damage, particularly with the engine hood, due to uncontrolled oscillating angles.
Innovation Solution
A steering apparatus with an actuating mechanism that actively limits the oscillating angle or deflection path on the vehicle axle, utilizing an electrical or hydraulic positioning element to adapt the maximum permitted oscillating angle, activated by a control unit that anticipates the full steering angle based on travel data and user inputs, preventing contact with bodywork components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vehicle axle is suspended in an oscillating or resilient manner to improve ride comfort and adaptability, then the vehicle can better handle uneven terrain, but undesired contact between steerable wheels and bodywork components occurs during steering
Solution Approach 1:
The control unit anticipates full steering angles by evaluating travel data and headland management system information before the maneuver occurs. This preliminary detection allows the positioning element to pre-limit the oscillating angle, preventing wheel-bodywork contact before it happens during the actual steering action
Solution Approach 2:
The system continuously monitors travel data, vehicle position, and steering angle through sensors and control units. This feedback loop enables real-time adjustment of the oscillating angle limitation, allowing the positioning element to respond dynamically to actual driving conditions and prevent harmful contact
2Productivity
If the maximum steering angle is increased to improve turning capability, then the vehicle can achieve smaller turning circles, but the risk of wheel contact with bodywork increases
Solution Approach 1:
The positioning element dynamically adjusts the maximum permitted oscillating angle based on real-time evaluation of travel data and steering requirements. This dynamic limitation allows optimal turning capability while adaptively preventing wheel-bodywork contact during high-steering-angle maneuvers
Solution Approach 2:
The system changes the oscillating angle parameter dynamically based on detected maneuver conditions. The control unit modifies the maximum permitted oscillating angle according to the situation, enabling full steering capability when safe and limiting it when wheel-bodywork contact risk exists
Data Source
AI summary
A steering apparatus for an agricultural vehicle includes a vehicle axle suspended in an oscillating or resilient manner, steerable wheels located on the vehicle axle, and an actuating apparatus for influencing a steering angle which is adjustable on the steerable wheels. A device actively limits an oscillating angle or deflection path arising on the vehicle axle. Moreover, the device operably activates a control unit according to a full steering angle to be anticipated on the steerable wheels as a result of travel.