Agricultural Machine Speed Control Under Load Limits

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Solution Overview

Problem

Agricultural machines do not consider machine-specific and environment-specific load limits during route planning and operation, which can lead to damage or environmental impact.

Innovation Solution

A control system for agricultural machines that includes a location determination module and a machine management system, which stores and retrieves load limits to regulate operational speeds, ensuring they do not exceed machine-specific or environment-specific limits, using a planning system to define routes and operational speeds accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If operational speed is increased to improve productivity, then work efficiency increases, but machine-specific and environment-specific load limits are exceeded causing damage or environmental impact

Engineering Contradiction:
Improvework efficiencyVSAvoidmachine damage prevention
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary determination of load limits for working implements and pre-calculates maximum permissible operational speeds before actual operation. The planning system stores these speed limits and ensures they are not exceeded during work processes, preventing machine damage before it occurs.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control system continuously monitors the actual operational speed of the agricultural machine and compares it against the predetermined maximum permissible speeds. The machine management system uses this feedback to regulate and control the operational speed, ensuring load limits are not exceeded while maintaining optimal productivity.

Inventive Principle:
Principle #23Feedback

2Productivity

If operational speed is increased to optimize work processes, then processing efficiency improves, but environment-specific load limits are exceeded causing environmental impact

Engineering Contradiction:
Improveprocessing efficiencyVSAvoidenvironmental impact
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system determines environment-specific load limits in advance, such as drift limits for sprayers, and pre-calculates the corresponding maximum permissible operational speeds. These limits are stored in the planning system and applied before operation to prevent environmental harm.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control system monitors operational speed against environment-specific speed limits and regulates the machine's operation to prevent exceeding these limits, thereby preventing environmental damage such as chemical drift while maintaining optimal processing efficiency.

Inventive Principle:
Principle #23Feedback

3Productivity

If route planning is optimized for shortest travel distance, then productivity increases, but machine-specific load limits are exceeded due to high speeds

Engineering Contradiction:
Improvetravel efficiencyVSAvoidmachine strength limits
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The planning system determines machine-specific load limits and corresponding maximum permissible operational speeds before route planning. These speed limits are integrated into the route optimization process, ensuring that even on the shortest routes, the machine does not exceed its strength limits.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the operational speed along the planned route based on location-specific maximum permissible speeds. The machine management system regulates the operational speed at different locations to ensure machine-specific load limits are not exceeded while maintaining optimal travel efficiency.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12035650B2Control system and method for operating an agricultural machine as well as an agricultural machine
Publication Date: 2024.07.16 HORSCH LEEB APPL SYST
  • US12035650B2 patent drawing
  • US12035650B2 patent drawing
  • US12035650B2 patent drawing

AI summary

A control system for an agricultural machine including at least one working implement for performing agricultural work processes includes a location determination module and a machine management module. The work processes can be planned by a planning module and transmitted to the machine management module or can be retrieved from a memory of the machine management module. In the control system, operational speeds are managed such that machine-specific load limits and environment-specific load limits are not exceeded.