Dynamic Swath Width Control for Crop Rake Efficiency
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Solution Overview
Problem
Agricultural machines struggle to optimize swath width during curved and straight sections of a field, leading to inefficient crop pickup, as existing systems do not adapt swath width effectively for different driving sections.
Innovation Solution
An agricultural machine with a rake and control device that adjusts swath width based on driving section type, using control signals generated from electronic driving data to reduce swath width in curved sections and increase it back in straight sections, allowing for optimized swath formation and pickup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the agricultural machine maintains a constant swath width during all driving sections, then the control system is simple, but the crop pickup efficiency decreases due to mismatch between swath width and pick-up width in curved sections
Solution Approach 1:
The swath width is made dynamically adjustable based on the driving section type. The control device receives driving data indicating whether the machine is in a straight or curved section, and automatically adjusts the swath width accordingly - wider in straight sections and narrower in curved sections - optimizing crop pickup efficiency without requiring manual intervention
Solution Approach 2:
The control system implements feedback by receiving driving data that indicates the current driving section type (straight or curved) and using this information to automatically adjust the swath width. This closed-loop control ensures the swath width matches the effective pick-up width of subsequent agricultural devices under varying operating conditions
2Productivity
If the swath width is reduced in curved driving sections, then the crop pickup efficiency improves, but the swath formation time increases due to additional adjustment operations
Solution Approach 1:
The control device receives driving data in advance that indicates an upcoming curved driving section and proactively adjusts the swath width before the machine enters the curve. This preliminary adjustment prevents crop loss during pickup without causing delays, as the swath width is optimized in anticipation of the curved section rather than reacting after entering it
3Area of stationary object
If the swath width is increased in straight driving sections, then the coverage area increases, but the crop may be lost if the swath width exceeds the pick-up width in subsequent curved sections
Solution Approach 1:
The swath width is customized for different spatial locations along the driving path. In straight driving sections, a wider swath width is used to maximize coverage area and productivity. In curved driving sections, the swath width is locally reduced to match the effective pick-up width, preventing crop loss. This local adaptation of swath width optimizes both coverage and pickup efficiency
Data Source
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AI summary
The invention relates to a method for controlling an agricultural machine when raking a crop on an agricultural area, comprising: providing an agricultural machine with a rake (1) in which a combination of raking devices (4, 5) is arranged on a support frame (3) which are configured to rake a crop on an agricultural area; moving the agricultural machine with the rake (1) on the agricultural area in order to rake the crop;and control of the raking units (4, 5) in swath operation by means of control signals generated by a control unit of the agricultural machine, wherein the raking units (4, 5) are controlled to rake a first section of a swath of the crop with a first swath width according to a first operating mode when the agricultural machine with the rake (1) moves along a substantially straight travel section; and the raking units (4, 5) are controlled to rake a second section of the swath with a second swath width that is less than the first swath width according to a second operating mode when the agricultural machine with the rake (1) moves along a curved travel section. Furthermore, an arrangement with an agricultural machine for raking a crop on an agricultural area is provided. (Fig. 1);