Implement Steering Angle Compensation on Sloped Ground
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Solution Overview
Problem
Active steering systems for implements fail to track desired paths on sloped ground, leading to tracking errors due to insufficient alignment with planned paths.
Innovation Solution
A system and method that includes a steering detector to identify the target steering angle and a data processor to determine if the implement is at or near the maximum steering angle on a lateral slope, adjusting the vehicle's steering angle to align the implement with the planned path, ensuring accurate tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the implement steering system uses a standard active steering control to track the planned path, then the steering system is simple and easy to operate, but the implement fails to track the desired path accurately on sloped ground
Solution Approach 1:
The system performs preliminary detection of slope conditions and predicts the implement's downward slippage before it occurs. The controller pre-adjusts the vehicle steering angle to compensate for the expected tracking error, rather than reacting after the implement has already deviated from the planned path.
Solution Approach 2:
The system introduces an intermediary compensation mechanism that acts between the standard steering control and the implement. By detecting slope conditions and calculating compensation angles, the system mediates the steering input to account for gravitational effects on sloped terrain, improving tracking accuracy without completely redesigning the steering system.
2Reliability
If the implement steering angle is increased to compensate for lateral slope, then the implement can better resist downward slippage, but the steering system may reach maximum steering angle limits
Solution Approach 1:
Instead of solely increasing the implement steering angle to compensate for slope, the system introduces a second dimension of control by adjusting the vehicle steering angle. This dual-dimensional approach allows the system to achieve the necessary compensation effect while staying within the mechanical limits of the implement steering system.
Solution Approach 2:
The system dynamically changes the steering control parameters by calculating a compensation angle based on detected slope conditions. The controller adjusts the target vehicle steering angle by adding this compensation angle to the standard steering angle, optimizing the steering input to account for gravitational effects while respecting mechanical constraints.
3Manufacturing precision
If the vehicle adjusts steering angle to guide implement toward lateral upslope, then the implement alignment with planned path is improved, but the steering response time and complexity increase
Solution Approach 1:
The system continuously detects the implement's actual position relative to the planned path and the slope conditions, then feeds this information back to the controller. The controller calculates the necessary steering adjustments and applies them in real-time, creating a closed-loop control system that maintains accurate tracking despite the additional compensation requirements.
Data Source
AI summary
A target steering angle is detected, where the target steering angle is associated with an implement steering system for tracking a planned implement path. A data processor determines whether or not the implement steering angle is at or near a maximum steering angle toward a lateral upslope of ground. The data processor determines whether the implement is aligned with the planned implement path. A controller or data processor adjusts a target vehicle steering angle of the vehicle to guide the implement toward the lateral upslope in alignment with the planned implement path such that the implement tracks the planned implement path if the implement steering angle is at or near the maximum steering angle.