Variable Conditioner Roll Speed for Mower Crop Flow Control
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Solution Overview
Problem
Mower-conditioner machines face a challenge in optimizing conditioner roll speed independently of the cutting mechanism speed, leading to suboptimal conditioning quality due to tied speed ratios, which can result in poor mass flow rate and increased power consumption.
Innovation Solution
A control system that adjusts conditioner roll speed based on the ground speed of the mower-conditioner machine, allowing for independent control of conditioner roll speed to optimize mass flow rate and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If disc speed is increased to improve cut quality, then cut quality is improved, but conditioner speed increases which may not be necessary and can cause poor conditioning quality due to reduced mass flow rate
Solution Approach 1:
The patent applies dynamics by making the conditioner roll speed variable and adjustable independently from the disc speed. The system transitions from a fixed mechanical coupling to a dynamic control system that can adapt conditioner speed based on operating conditions, allowing optimization of both cut quality and conditioning quality simultaneously.
Solution Approach 2:
The patent changes the operating parameter of conditioner roll speed from being fixed by mechanical coupling to being independently variable. The control system allows adjustment of conditioner speed as a separate parameter from disc speed, enabling optimization of conditioning quality without being constrained by cut speed requirements.
2Manufacturing precision
If conditioner speed is increased to improve conditioning quality, then conditioning quality is improved, but power consumption increases
Solution Approach 1:
The system enables dynamic adjustment of conditioner speed to match actual operating conditions and mass flow rate requirements. Rather than running at constant high speed, the conditioner rolls operate at variable speeds optimized for each condition, reducing unnecessary power consumption while maintaining conditioning quality.
Solution Approach 2:
The control system incorporates feedback by monitoring operating conditions and adjusting conditioner speed accordingly. This feedback mechanism allows the system to optimize power consumption by matching conditioner speed to actual mass flow rate and conditioning requirements, avoiding energy waste from excessive speed.
3Device complexity
If conditioner speed is tied to cutting mechanism speed through mechanical coupling, then device complexity is reduced, but adaptability to optimize both cut quality and conditioning quality is limited
Solution Approach 1:
The patent introduces a control system as an intermediary between the mechanical drive systems. This intermediary layer decouples the direct mechanical connection while maintaining coordinated operation, allowing independent speed optimization of conditioner rolls without requiring complex mechanical transmissions or gearings.
Solution Approach 2:
The patent replaces the mechanical coupling system with an electronic control system. Instead of using mechanical transmissions, gearings, or belt drives to couple conditioner speed to disc speed, the system uses electronic sensors and controllers to coordinate operation, simplifying the mechanical structure while enabling independent speed optimization.
Data Source
AI summary
An agricultural machine system includes: a mower-conditioner machine including a plurality of conditioner rolls; a control system operatively coupled with the mower-conditioner machine, the control system including: a controller system configured for: determining a conditioner speed adjustment, as an independent parameter, based at least in part on a ground speed of the mower-conditioner machine.