Mower deck with torque monitoring
EP4712761A1Pending Publication Date: 2026-03-25THE TORO COMPANY
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Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2026-03-25
AI Technical Summary
Technical Problem
Existing grounds maintenance machines with electric motors face inefficiencies in torque estimation and power usage, particularly above the knee point voltage, which affects cut quality and operational efficiency.
Method used
A controller system that estimates torque of the cutting blade based on blade speed, motor current, motor voltage, and a torque profile, allowing for adjustments to the speed limit of the propulsion system and blade speed to optimize power usage and maintain cut quality.
Benefits of technology
The system enables more efficient power usage and maintains cut quality by dynamically adjusting the speed of the cutting blade and propulsion system based on estimated torque, improving operational efficiency above the knee point voltage.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure US2024025631_21112024_PF_FP_ABST
Abstract
A grounds maintenance machine comprises a frame, drive members connected to the frame, and a propulsion system providing power to the drive members. A cutting deck is connected to the frame and comprises a deck motor to rotate a cutting blade. A controller is operatively coupled to the propulsion system and the cutting deck. The controller is configured to determine a rotational speed of the cutting blade, a current provided to the deck motor, and a voltage provided to the deck motor. The controller is configured to estimate a torque of the cutting blade based on the rotational speed, the current, the voltage, and a torque profile of the deck motor. The controller is configured to adjust, based on the estimated torque of the cutting blade, one or both of a speed limit of the propulsion system and a blade speed of the cutting blade.
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