System and method for controlling a motor at a constant rotations per minute (rpm)
AssigneeTechtronic Floor Care Technology Limited
InventorKevin Terry
Life of this patent
Estimating the term…
Abstract
A cleaning system including a motor configured to provide rotational energy, a current sensor configured to sense current provided to the motor, and a controller having an electronic processor. The controller is configured to receive, from the current sensor, a current signal indicative of the current provided to the motor, filter the current signal to produce a filtered current signal, and control the motor based on the filtered current signal.
Claims21
-20. (canceled)
A cleaning system comprising:
- a motor configured to provide rotational energy to a brush;
- a current sensor configured to sense current provided to the motor;
- and
- a controller having an electronic processor, the controller configured to
- receive, from the current sensor, a current signal indicative of the current provided to the motor,
- filter the current signal to produce a filtered current signal, and
- control the motor based on the filtered current signal,
- wherein the controller controls the motor to operate at a first substantially constant rotations per minute when the current signal is less than a predetermined current threshold, and to operate at a second substantially constant rotations per minute when the current signal is greater than the predetermined current threshold.
A method of controlling a cleaning system including a motor configured to provide rotational energy to a brush, the method comprising:
- sensing, via a current sensor, a current provided to the motor;
- receiving, via a controller, a current signal indicative of the current from the current sensor;
- filtering, via the controller, the current signal to produce a filtered current signal;
- controlling, via the controller, the motor based on the filtered current signal;
- and
- operating the motor at a first substantially constant rotations per minute when the current signal is less than a predetermined current threshold, and operating the motor at a second substantially constant rotations per minute when the current signal is greater than the predetermined current threshold.
A cleaning system comprising:
- a motor configured to provide rotational energy to a brush;
- a current sensor configured to sense current provided to the motor;
- and
- a controller having an electronic processor, the controller configured to
- receive, from the current sensor, a current signal indicative of the current provided to the motor,
- filter the current signal to produce a filtered current signal, and
- control the motor based on the filtered current signal,
- wherein the controller controls the motor based on a first gain value when the current signal is less than a predetermined current threshold, and a second gain value when the current signal is greater than the predetermined current threshold.
Dependencies are inferred from the claim text.