Vacuum cleaner and control method therefor
AssigneeLG Electronics Inc.
InventorDonghoon Kwak
Life of this patent
Estimating the term…
Abstract
Disclosed is a cleaner comprising a cleaner body, a handle provided in the cleaner body, a wheel provided in a lower portion of the cleaner body and rotatably supporting the cleaner body, a motor driving the wheel electrically, an encoder sensing the rotation number of the wheel or the motor, and a controller controlling the driving of the motor by varying the voltage applied to the motor based on the rotation number sensed by the encoder, wherein the controller electrically drives the wheel by applying voltage to the motor when the velocity of the cleaner body initially moving is a preset value or more, and a controlling method for the cleaner.
Claims19
A cleaner comprising:
- a cleaner body;
- a wheel that is connected with the cleaner body and that is located in a lower portion of the cleaner body, the wheel being configured to rotatably support the cleaner body;
- a handle that is located on the cleaner body and that is configured to allow a user to hold the handle to move the cleaner body by rotating the wheel;
- a motor that is connected with the wheel and that is configured to drive the wheel electrically;
- an encoder that is connected with at least one of the wheel or the motor and that is configured to sense a rotation number of the wheel or the motor;
- and
- a controller that is located on the cleaner body and that is configured to drive the motor by varying a voltage applied to the motor based on the rotation number sensed by the encoder,
- wherein the controller is configured to electrically drive the wheel by:
- determining a velocity of the cleaner body,
- determining that the velocity of the cleaner body is equal to or more than a preset value, and
- initiating application of voltage to the motor based on the determination that the velocity of the cleaner body is equal to or more than the preset value,
- wherein the controller is configured to, after the initiation of application of voltage to the motor, determine that the velocity of the cleaner body falls below the preset value and, based on the determination that the velocity of the cleaner body falls below the preset value, consistently apply voltage to the motor to change a moving direction of the cleaner body,
- wherein the voltage applied to the motor is determined as a sum of a first value determined by multiplying a first constant and the velocity of the cleaner body and a second value determined by multiplying a second constant and a moving acceleration of the cleaner body, and
- wherein the first constant is larger than the second constant.
A controlling method for a cleaner comprising:
- moving, based on force applied by a user holding a handle of the cleaner, a cleaner body of the cleaner by rotating a wheel that is connected with the cleaner body and that is located in a lower portion of the cleaner body, the wheel being configured to rotatably support the cleaner body;
- determining a velocity of the cleaner body;
- determining that the velocity of the cleaner body is equal to or more than a preset value;
- based on the determination that the velocity of the cleaner body is equal to or more than the preset value, electrically driving the wheel by initiating application of voltage to a motor;
- and
- after the initiation of application of voltage to the motor, determining that the velocity of the cleaner body falls below the preset value;
- and
- based on the determination that the velocity of the cleaner body falls below the preset value, consistently applying voltage to the motor to change a moving direction of the cleaner body,
- wherein the voltage applied to the motor is determined as a sum of a first value determined by multiplying a first constant and the velocity of the cleaner body and a second value determined by multiplying a second constant and a moving acceleration of the cleaner body, and
- wherein the first constant is larger than the second constant.
Dependencies are inferred from the claim text.