Multi-Rotor Rake Headland Control via Staggered Lifting
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Solution Overview
Problem
Existing multi-rotor rakes require complex sensor systems for accurate headland boundary detection, leading to errors and inadequate swath formation, which can result in crop failures and time delays.
Innovation Solution
A method for operating a multi-rotor rake that simplifies control by using a minimal number of sensors, where the lifting process for rake rotors is activated through conscious input commands by the operator, with adjustable delay values to adapt to headland angles, reducing susceptibility to errors and improving forage harvesting efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex sensor system is used to detect headland boundary lines, then measurement precision is improved, but device complexity increases and reliability decreases due to sensor errors and contamination
Solution Approach 1:
The patent extracts the essential control function from complex sensor-based automated systems and implements it through simple operator input commands. The lifting actuator control is decoupled from complex boundary detection sensors, retaining only the necessary manual input interface and basic actuator mechanisms, thereby eliminating unnecessary sensor complexity while maintaining operational precision.
Solution Approach 2:
The operator interface enables the machine operator to directly control the lifting actuators based on visual observation and operational judgment. This self-service approach replaces automated sensor-based control with human-operated control, eliminating the need for complex sensor systems while maintaining reliable swath formation through operator expertise.
2Measurement precision
If multiple sensors are used for boundary line detection, then measurement precision is improved, but reliability worsens due to sensor errors and contamination in rough working conditions
Solution Approach 1:
The patent removes the unreliable sensor detection function entirely and replaces it with direct operator input commands. The operator interface retains only the essential control functionality, eliminating sensors that are prone to errors and contamination, thereby improving system reliability while maintaining operational precision through human judgment.
Solution Approach 2:
The system relies on the operator's ability to observe and control the rake rotors directly, without intermediary sensors. This self-service control method eliminates the reliability issues associated with sensors in rough agricultural environments, as the operator can adapt to varying conditions without sensor interference or failure.
3Productivity
If automated lifting control with sensor detection is implemented, then productivity is improved, but device complexity increases and error susceptibility increases
Solution Approach 1:
The patent extracts the core productivity function (lifting rotor control) from the complex automated sensor system and implements it through simple operator input commands. This reduces device complexity while maintaining productivity, as the operator can quickly respond to field conditions without the delays and errors associated with sensor-based automated systems.
Solution Approach 2:
The operator directly controls the lifting actuators through the operator interface, enabling immediate response to field conditions without intermediary sensor processing. This self-service control method maintains high productivity while reducing system complexity and error susceptibility, as human operators can adapt to varying conditions more reliably than sensor-based automated systems.
4Measurement precision
If sensor-based automated boundary detection is used, then measurement precision is improved, but ease of operation worsens due to the need for complex sensor maintenance and calibration
Solution Approach 1:
The patent removes the complex sensor detection and calibration functions, retaining only the essential operator input interface. This simplifies operation by eliminating the need for sensor maintenance and calibration, while maintaining measurement precision through direct operator observation and control of the rake rotor positions.
Data Source
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AI summary
The invention relates to a method for operating a multi-rotor rake (1): The method comprises the following steps: - Winding of crop material (40), wherein all four rotors (7, 12, 17, 22) are in their working position (9, 14, 19, 24); - Activating a lifting process to move the two right rotors (7, 12) into the lifting position (10, 15), wherein in a first step the right front rotor (7) is moved into the lifting position (10) and with a delay value to the first step the right rear rotor (12) is moved into the lifting position (15); - Activating a lifting process to move the two left rotary gyroscopes (17, 22) into the lifting position (20, 25), wherein in a second step the left front rotary gyroscope (17) is moved into the lifting position (20) and with a delay value to the second step the left rear rotary gyroscope (22) is moved into the lifting position (25).