Agricultural Actuator Control Parameter Optimization via Vibration Detection
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Solution Overview
Problem
Agricultural machine control systems face challenges in maintaining accurate position adjustments of adjustable elements due to mechanical vibrations caused by sudden movements, leading to reduced productivity and performance degradation over time, as operators must manually adjust control unit parameters to accommodate changing conditions.
Innovation Solution
An automatic control arrangement that uses a determination device to optimize control unit parameters based on detected vibration characteristics, creating a virtual model of the system and iteratively adjusting parameters to minimize vibration deviations, thereby enhancing system performance and driving comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If proportional control is used to adjust the position of the cutting unit, then the position accuracy is improved, but mechanical vibrations and bouncing are generated that negatively affect system stability
Solution Approach 1:
The patent implements feedback by detecting the actual position of the cutting unit using sensors and comparing it with the desired position. The control unit continuously adjusts the actuator based on the position error signal, creating a closed-loop control system that maintains position accuracy while reducing vibrations through adaptive parameter adjustment.
Solution Approach 2:
The patent applies dynamics by making the control unit parameters (amplification, time delay) variable rather than fixed. The determination device automatically adapts these parameters based on detected vibration characteristics and system state, allowing the control system to dynamically optimize between position accuracy and vibration suppression during different operating conditions.
2Adaptability or versatility
If manual adjustment of control unit parameters is performed, then adaptation to changing conditions is achieved, but productivity is reduced due to time loss and operational complexity
Solution Approach 1:
The patent implements self-service through the determination device that automatically determines and adjusts control unit parameters without operator intervention. The system monitors vibration characteristics and system state, then autonomously adapts the amplification and time delay parameters, eliminating the need for manual adjustment and maintaining high productivity throughout the harvesting process.
Solution Approach 2:
The patent applies parameter changes by automatically modifying control unit parameters (amplification factor, time delay) based on detected vibration characteristics and operating conditions. This automatic parameter adaptation allows the system to maintain optimal performance across varying harvesting conditions without requiring manual intervention, thus preserving productivity.
3Speed
If control unit amplification is increased to improve response speed, then position adjustment speed is improved, but excess vibrations and bouncing are generated
Solution Approach 1:
The patent applies dynamics by making the control unit amplification variable rather than fixed. The determination device automatically adjusts the amplification parameter based on detected vibration characteristics and system state, allowing high amplification (fast response) when appropriate and low amplification (vibration suppression) when needed, thus dynamically optimizing the trade-off between response speed and vibration generation.
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
This solution allows for continuous and adaptive optimization of control unit parameters, reducing mechanical vibrations and maintaining accurate position adjustments, thus improving the harvesting performance and productivity of agricultural machines.
Implementation Method 1
a determination device to make available at least one parameter that is determined with the aid of detected vibration characteristics of the system consisting of the adjustable element and the work machine
Data Source
AI summary
An arrangement for the control of an actuator (48) for the adjustment of an adjustable element (16) of an agricultural work machine (10) is equipped with a control unit (50) to produce adjustment signals for the adjustable element (16) in the sense of moving to a theoretical position, a control arrangement (62) of the actuator (48), coupled with the adjustable element (16), which receives the adjustment signals of the control unit (50), and a determination device (54) to make available at least one parameter (ϑ), determined with the aid of recorded vibration characteristics of the system consisting of the adjustable element (16) and the work machine (10). The determination device (54) can be operated so as to determine at least one parameter (ϑ) at the successively following time points and to supply it to the control unit (50). The parameter (ϑ) serves to optimize the regulating behavior of the control unit (50).