Finishing Frame Downforce Control for Uneven Soil Contact
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Solution Overview
Problem
Tillage implements experience soil levelness reduction due to bouncing of the finishing frame on uneven terrain, leading to water ponding and reduced crop yield.
Innovation Solution
A downforce control system with a controller that adjusts frame downforce based on vibration sensing, increasing or decreasing actuator force to maintain optimal contact with the soil.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the finishing frame is urged toward the soil surface with fixed downforce, then the implement can operate on level terrain, but the finishing frame bounces on uneven terrain causing varying interactions with the soil
Solution Approach 1:
The patent applies dynamics by transitioning from fixed downforce to dynamically adjustable downforce. The system continuously monitors vibration levels and automatically adjusts the downforce applied to the finishing frame in real-time, allowing the system to adapt to changing terrain conditions and maintain stable operation on uneven ground.
Solution Approach 2:
The patent implements feedback control by using vibration sensors to detect finishing frame oscillations and feeding this information back to the downforce control system. The controller processes the vibration signals and adjusts the downforce accordingly, creating a closed-loop control system that maintains optimal finishing frame stability.
2Force
If the operator selects higher fluid pressure for hydraulic cylinders to increase downforce, then the finishing frame maintains better contact with the soil, but the system cannot adapt to varying terrain conditions
Solution Approach 1:
The system transforms the static downforce selection into a dynamic adjustment process. Instead of requiring manual operator intervention to change downforce settings for different terrain conditions, the system automatically adjusts the hydraulic cylinder pressure based on real-time vibration monitoring, enabling continuous adaptation to varying terrain.
Solution Approach 2:
The system performs self-adjustment by autonomously monitoring its own vibration state and automatically modifying the downforce without external input. The vibration sensors and controller work together to self-regulate the finishing frame's contact force with the soil, eliminating the need for continuous operator attention.
3Stability of the object's composition
If vibration monitoring and automatic downforce adjustment systems are added, then finishing frame stability is improved, but the device complexity increases
Solution Approach 1:
The patent replaces complex mechanical adjustment mechanisms with an electronic control system. Instead of using mechanical linkages and manual adjustment devices, the system uses vibration sensors, electronic controllers, and hydraulic control to achieve downforce adjustment, reducing mechanical complexity while improving control precision.
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
Enhances soil levelness, reduces water ponding, and increases crop yield by stabilizing the finishing frame's interaction with the soil.
Implementation Method 1
a vibration sensor coupled to the finishing frame and configured to output a sensor signal indicative of vibration of the finishing frame
Implementation Method 2
The frame downforce actuator is configured to apply a frame downforce to the finishing frame to urge the finishing frame toward the soil surface
Data Source
AI summary
A downforce control system for a finishing frame of a tillage implement includes a controller having a processor and a memory. The controller is configured to receive a sensor signal indicative of vibration of the finishing frame. The finishing frame is configured to be movably coupled to a main frame of the tillage implement and to be urged toward a surface of soil via application of a frame downforce from a frame downforce actuator. The controller is also configured to compare a magnitude of the vibration to a maximum threshold magnitude. Furthermore, the controller is configured to output an information signal to a user interface indicative of the frame downforce applied to the finishing frame being insufficient and/or control the frame downforce actuator to increase the frame downforce applied to the finishing frame in response to determining the magnitude of the vibration is greater than the maximum threshold magnitude.