Work Implement Float Pressure Calibration for Consistent Ground Tracking

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Solution Overview

Problem

Agricultural machines face challenges in adjusting float operating settings for different work implements due to changes in configurations, field conditions, and operator skill levels, leading to potential damage from improper adjustments.

Innovation Solution

An agricultural machine with a controller and implement linkage system that automatically determines and adjusts the float pressure settings for left and right float cylinders based on predefined settings and real-time conditions, allowing the work implement to track the ground surface consistently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual adjustment of float operating settings is used, then operator control flexibility is maintained, but adjustment accuracy and consistency deteriorate due to operator skill limitations and time-consuming procedures

Engineering Contradiction:
Improvefloat pressure setting accuracyVSAvoidadjustment complexity
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system performs self-adjustment by automatically determining the actual float pressure based on measured cylinder position and pre-stored calibration data, eliminating the need for manual operator adjustment while maintaining high precision

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical adjustment with an electronic control system that uses sensors, processors, and stored calibration algorithms to automatically determine and adjust float pressure settings

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If float pressure settings are adjusted for different work implements, then operational versatility is improved, but system complexity increases due to multiple configuration parameters

Engineering Contradiction:
Improvework implement compatibilityVSAvoidconfiguration parameter management
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system stores multiple sets of calibration parameters for different work implement types in a database, allowing a single control system to universally support various implements by selecting the appropriate parameter set based on implement identification

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent creates digital copies of calibration data for different work implement configurations, storing these parameter sets in memory so the system can replicate the optimal settings for each specific implement type without physical reconfiguration

Inventive Principle:
Principle #26Copying

3Stability of the object's composition

If float pressure is increased to ensure consistent ground tracking, then cutting consistency improves, but risk of work implement damage increases due to excessive downward force

Engineering Contradiction:
Improveground tracking consistencyVSAvoidwork implement damage risk
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The system continuously measures the actual float cylinder position and compares it with expected values, using this feedback to dynamically adjust and determine the appropriate float pressure, ensuring consistent ground tracking while preventing excessive force that could cause damage

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent dynamically determines float pressure by changing the parameter based on measured cylinder position and selecting from pre-stored calibration data, allowing optimal pressure adjustment rather than using fixed high pressure settings

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12382848B2Pressure to hold or raise the head for a work implement
Publication Date: 2025.08.12 DEERE & CO
  • US12382848B2 patent drawing
  • US12382848B2 patent drawing
  • US12382848B2 patent drawing

AI summary

An agricultural machine includes a controller disposed in communication with a work implement, an output, and an input. Left and right float cylinders are attached to and interconnected with a frame and left and right connecting arms. A desired operating condition from a plurality of predefined settings is then solicited from an operator via the input, wherein the desired operating condition corresponds to a designated pressure setting of the left and right float cylinders. The work implement is operated in a float mode of operation and then commanded to a raised position. The controller automatically determines a maximum pressure and a position that the maximum pressure corresponds to for the left and right float cylinders. The controller automatically modifies the designated pressure setting of the left and right float cylinders in the database based on the maximum pressure and position for each of the left and right float cylinders.