Implement Lateral Position Control Through Turning Compensation
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Solution Overview
Problem
Agricultural implements connected to vehicles face challenges in maintaining precise path alignment due to external influences like slopes and GNSS inaccuracies, leading to deviations and potential damage during turning processes.
Innovation Solution
The system includes a device control unit that presets the actuator to compensate for changed external influences after a turning process, ensuring the implement returns to its original position relative to the vehicle, thereby reducing errors and maintaining optimal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the actuator is controlled to compensate for lateral deviation caused by external influences, then the implement position accuracy is improved, but after turning the implement shows significant deviation from desired position
Solution Approach 1:
The control unit presets the actuator to a specific position before the turning process begins. This preliminary action anticipates the change in external influences that will occur after turning, allowing the actuator to be pre-positioned to compensate for the upcoming deviation, thereby maintaining implement accuracy through the turning transition.
2Ease of operation
If the actuator is reset to neutral position after turning, then the system returns to baseline control, but the implement position deviates significantly during the transition
Solution Approach 1:
Instead of resetting the actuator to neutral after turning, the control unit presets the actuator to a compensating position before turning begins. This preliminary positioning action ensures that when the turning is complete and external influences change, the actuator is already in the correct position to maintain implement accuracy, avoiding the significant deviations that would occur with a simple neutral reset.
3Manufacturing precision
If the vehicle is guided on a target path using automatic steering, then the vehicle path accuracy is improved, but external influences like slopes cause lateral deviation from the path
Solution Approach 1:
The control unit continuously monitors the lateral deviation of the vehicle from the target path caused by external influences such as slopes. Based on this feedback, the control unit automatically adjusts the actuator position to compensate for the deviation, ensuring that the implement remains on the desired path despite the vehicle's lateral displacement.
Solution Approach 2:
The control unit presets the actuator position based on anticipated changes in external influences, particularly before and after turning operations. This preliminary adjustment compensates for the known effects of slopes and other external factors that will cause lateral deviation, allowing the system to proactively maintain path accuracy rather than merely reacting to deviations after they occur.
Data Source
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AI summary
A system for controlling a work implement (14) connected to a vehicle (12) is described, wherein the work implement (14) has a tool (88) for carrying out a crop production operation, the vehicle (12) is equipped with an automatic steering device for guiding the vehicle (12) on a target path, an actuator (38) for controlling the lateral position of the work implement (14) relative to the vehicle (12) is connected to a device control unit (54) which is operable to actuate the actuator (38) such that the work implement (12) is moved on a target path and a lateral deviation of the vehicle (12) from the target path caused by external influences is compensated by actuating the actuator (38) and after a turning operation the actuator (38) is preset to a position in which the change in external influences caused by the turning operation is compensated.