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US 2026/0056255 A1Published application
Fault detection and protection for collection systems of power machines
AssigneeDoosan Bobcat North America, Inc.
InventorMatt Keller
Life of this patent
Estimating the term…
Abstract
Methods and systems of controlling a power machine. The power machine may be controlled based on a fault condition determined responsive to detecting an electric current drop for an electric actuator of the power machine, which may result from a blockage in a discharge chute of the power machine.
Claims19
A method of controlling a power machine, the method comprising:
- monitoring, with an electronic processor, electric current for an electric motor of a collection system of the power machine;
- determining, with the electronic processor, a fault condition for the collection system responsive to detecting that the electric current is below a predetermined electric current threshold;
- and
- controlling, with the electronic processor, the power machine based on the fault condition.
1 more element
A system of controlling a power machine, the system comprising:
- one or more electronic processors configured to:
- monitor an electric current trend for an electric motor of a collection system of the power machine;
- detect a deviation of a present electric current of the electric motor from the electric current trend;
- when the deviation of the present electric current is a reduced electric current value relative to the electric current trend, determine a first fault condition for the collection system of the power machine;
- when the deviation of the present electric current is an increased electric current value relative to the electric current trend, determine a second fault condition for the power machine;
- and
- control the power machine based on the first or second fault condition.
4 more elements
A mower comprising:
- a frame;
- a power source;
- a cutting assembly coupled to the frame and configured to be powered by the power source for cutting operations;
- one or more drive motors coupled to the frame and configured to be powered by the power source to move the mower over terrain during cutting operations;
- a collection system coupled to the cutting assembly, the collection system including:
- a discharge chute coupled to the cutting assembly;
- and
- an electric motor coupled to an impeller and configured to drive the impeller to control airflow within the discharge chute;
- and
- an electronic controller in communication with the one or more drive motors and the electric motor, the electronic controller configured to:
- monitor an electric current trend for the electric motor;
- detect a deviation of a present electric current of the electric motor from the electric current trend, wherein the deviation of the present electric current is a reduced electric current value relative to the electric current trend;
- determine, based on the deviation, a fault condition for the collection system;
- and
- control the mower based on the fault condition.
12 more elements
Dependencies are inferred from the claim text.