Centrifugal Spreader Control System with Radar Feedback
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Solution Overview
Problem
Current control systems for centrifugal spreaders require manual entry of various parameters for different types of fertilizers and working conditions, leading to initial deviations in distribution width and inefficiencies, especially when starting with unknown fertilizers or changing conditions.
Innovation Solution
A control system that performs a short calibration run to determine and adjust setting parameters, such as centrifugal disc speed and fertilizer application point, using sensor data to achieve the desired working width, with the ability to automatically recognize fertilizer types and adjust settings for varying conditions like obstacles or wind.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual entry of parameters for different fertilizer types is required, then the control system can be simple, but the ease of operation deteriorates and initial deviations occur
Solution Approach 1:
The control system automatically determines fertilizer-specific setting parameters by monitoring the actual distribution pattern and comparing it with the target distribution pattern, eliminating the need for manual parameter entry. The system self-adjusts centrifugal disc speed and fertilizer application point based on sensor feedback, making the system serve itself rather than requiring operator intervention.
Solution Approach 2:
The system continuously monitors the actual distribution width and pattern using sensors, compares it with the target distribution pattern, and automatically adjusts setting parameters based on the deviation. This closed-loop feedback mechanism eliminates initial deviations and maintains optimal distribution without manual intervention.
2Device complexity
If manual parameter entry is required for different fertilizer types, then device complexity is reduced, but productivity deteriorates due to time-consuming adjustments
Solution Approach 1:
The control system automatically adapts to different fertilizer types by monitoring the actual distribution pattern and self-determining the optimal setting parameters. This eliminates the need for operators to manually consult tables or enter parameters, saving significant time when changing fertilizer types or working conditions.
Solution Approach 2:
The system performs automatic calibration by comparing actual distribution with target distribution before full operation begins, determining the optimal setting parameters in advance. This preliminary automatic adjustment ensures immediate optimal performance when starting work or changing conditions.
3Device complexity
If fertilizer-specific parameters must be entered manually, then the control system remains simple, but adaptability deteriorates when facing unknown fertilizer types
Solution Approach 1:
The system continuously monitors the actual distribution pattern using sensors and automatically adjusts setting parameters based on the deviation from the target pattern. This feedback mechanism enables the system to adapt to any fertilizer type without pre-programmed parameters, as it learns the optimal settings through real-time monitoring and adjustment.
Solution Approach 2:
The system automatically modifies operating parameters such as centrifugal disc speed and fertilizer application point based on the monitored distribution pattern. By dynamically changing these parameters in response to actual performance, the system adapts to different fertilizer types and conditions without requiring manual intervention.
4Measurement precision
If a comprehensive sensor system is implemented, then measurement precision improves, but device complexity worsens
Solution Approach 1:
The sensor system monitors the actual distribution pattern and provides feedback to the control system, which automatically adjusts setting parameters. This closed-loop feedback uses the measurement information efficiently to achieve precise control without requiring overly complex sensor arrangements.
Solution Approach 2:
The control system automatically processes the sensor data and determines the optimal setting parameters without requiring complex external analysis or multiple specialized sensors. The system serves itself by using the measurement information to self-adjust, minimizing the need for additional complex components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables quick and accurate adjustment of distribution parameters to achieve the desired working width within a short time, reducing manual input and initial deviations, and improving operational efficiency by automatically adapting to changing conditions.
Implementation Method 1
The at least one first sensor (6) is designed as a radar sensor, which determines at least one parameter of the distribution characteristic by evaluating the amplitude of a measured Doppler signal
Data Source
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AI summary
Control system for a centrifugal spreader (100) and method for controlling a centrifugal spreader (100) for spreading agricultural material, wherein the centrifugal spreader (100) has at least one first sensor (6), preferably a radar sensor, for non-contact characterization of at least one first parameter of the distribution characteristic, such preferably mean discharge angle (AWW1, AWW2), of the centrifugal spreader (100), wherein the centrifugal spreader (100) also has at least one second sensor (7) for non-contact detection of the throw distance (WW1, WW2), wherein a desired working width (GAB) of the centrifugal spreader (100) is transmitted to the control system as a setpoint and/or entered into it, wherein the control system is configured to adjust control parameters relating to the distribution in response to the measurement signals of the at least two sensors (6, 7) and the desired working width (GAB).wherein, by means of a short calibration run of preferably no more than 30 s, particularly preferably no more than 15 s, all setting parameters specific to the setting of the target working width (GWW) of the respective spreading material type, such as centrifugal disc speed (DZ1, DZ2) and/or application point of the fertilizer onto the centrifugal disc (PE1, PE2) and/or centrifugal vane position and/or configuration of a boundary spreading setting, are determined and/or set by the control system based on the measured values of the sensors (6, 7) and the entered target working width (GWW).