Samsung Electronics Co., Ltd.

Snu Rdb Foundation

Lg Electronics Inc.

Sungkyunkwan University

Industry-University Cooperation Foundation Hanyang University

Sasmung Electronics Co., Ltd

Iucf-hyu

Young Jae Park

Sin Ae Kim

Hyo Won Sin

Min Jae Kim

Seung Ki Sul

Jae Hwi Jang

Won Kuk Kim

Sung Jin Park

Dong Woo Ha

Seok Man Hong

Han Sol Seo

Keon Soo Choi

Hyun-Sam Jung

Seung-Jun Chee

Bodrov Alexey

Dong Hyun Lee

Dong Hwan Lee

Dong-Hyun Lee

Jin Young Yoon

Jin Sung Kim

In Gun Kim

Won Mok Kim

Min Jung Kim

Jong Hwa Kim

Sin-Ae Kim

Ju Hwan Lee

Hyun Ki Cho

Yong Soon Park

Sang Pil Yoon

Ju Seop Lee

Byoung-kuk Lee

Jin Wook Yoon

Hyun Suk Kwak

Hyun Seok Hong

Dong-Myoung Joo

A robot cleaner including: a main body, a driving unit configured to move the main body, and a suction device provided in the main body and configured to suction outside foreign substances, and the suction device may include a first suction member having a suction port provided at a bottom surface of the main body and configured to suction the foreign substances, and at least one second suction member formed to move relative to the first suction member and having a suction port configured to suction the foreign substances.

Robot cleaner

There is provided a robot cleaner having an improved dust-collecting capability and an improved suction force and capable of being manufactured in a small size. The robot cleaner includes a main body comprising a fan motor and having a suction port provided in one side thereof; a plurality of cyclone units configured to separate foreign substances in air suctioned through the suction port; and a plurality of suction flow paths connecting the plurality of cyclone units and the suction port.

A control apparatus of a robot cleaner includes a user interface unit to receive a user command controlling the robot cleaner; a controller to generate a control signal to receive a map of a cleaning area, based on the user command; and a communicator to receive the map of the cleaning area from an external server or the robot cleaner, based on the control signal. An embodiment may download or generate a map of a cleaning area and allow a map editing to be performed by a user. An embodiment may set and edit a cleaning schedule. When setting the cleaning schedule, an embodiment may recommend a cleaning schedule based on cleaning history data. An embodiment may automatically determine whether the environment is changed or whether the cleaning is available, while the robot cleaner performs the cleaning, and it may be possible to actively deal with this.

Robot cleaner, control apparatus, control system, and control method of robot cleaner

A device and control method for driving a sensorless brushless DC (BLDC) motor, particularly related to a technology configured to increase the accuracy of detection of Zero Cross Point through a non-commutation period in a pulse width modulation (PWM) control. The device for driving a sensorless BLDC motor to switch a current applied to a stator winding based on a position of a rotor includes a three phase inverter configured to convert a DC input voltage into a three phase AC voltage and supply the three phase AC voltage to the BLDC motor; a terminal voltage detector configured to detect a three phase terminal voltage from an output terminal of the three phase inverter; and a controller configured to perform a PWM control of the terminal voltage based on a three phase back electromotive force (EMF) included in the detected terminal voltage. The PWM control includes a non-commutation control in which the switching of the current does not occur.

Device and control method for driving sensorless BLDC motor

A cleaning robot and a control method thereof may improve power consumption efficiency by using low-voltage power for a moving or inspecting operation and performing the moving or inspecting operation while operation of the cleaning unit is stopped when the operation of the cleaning unit is not needed. The cleaning robot includes a battery, a moving unit, a cleaning unit, a power converter which converts and outputs power supplied from the battery into a first voltage driving the moving unit and a second voltage driving the cleaning unit, and a controller which supplies power having the first voltage to the moving unit so as to drive the moving unit and supplies power having the second voltage to the cleaning unit so as to perform a cleaning operation. The controller continues driving the moving unit but stops driving the cleaning unit when the cleaning robot moves on an already cleaned area.

Cleaning robot and control method thereof

A robot cleaner that sweeps dust on the floor toward its center and absorbs the dust through a small-area inlet with a strong suction force, by a cleaning tool that integrates functions of side brushes and a main brush into one. The present disclosure also provides a robot cleaner that enables a large-diameter foreign material to be guided to and effectively absorbed through the inlet without interference by a cleaning tool. The robot cleaner includes a main unit including a fan motor and a dust collector and having an inlet arranged on a base to absorb foreign materials, and a cleaning tool arranged in the bottom of the base, extending to a front side of the base from the inlet and guiding a foreign material on a floor to a side of the inlet, wherein the cleaning tool is arranged to be movable by an external force.

Disclosed herein are a power supply apparatus, and an electric apparatus and a vacuum cleaner having the power supply apparatus. According to an aspect of the present disclosure, the power supply apparatus includes: a first power converter configured to convert a first Alternating Current (AC) voltage into a Direct Current (DC) voltage; a second power converter configured to drop the DC voltage output from the first power converter and transfer the dropped DC voltage to a power storage unit, and to boost a DC voltage of the power storage unit and output the boosted DC voltage; and a third power converter configured to convert a DC voltage among the DC voltage output from the first power converter and the boosted DC voltage output from the second power converter, into a second AC voltage, and to transfer the second AC voltage to a load.

Power supply apparatus, and electric apparatus and vacuum cleaner having the same

An inverter control apparatus and a control method thereof are provided. The inverter control apparatus and a control method thereof stably operate a three-phase motor using a capacitor having a small capacitance for a DC link. The inverter control apparatus includes a current sensor to sense an output current of the inverter, a voltage sensor to sense a DC-link voltage of the inverter, and a controller to generate an average of a periodically varying rotor based q-axis current boundary value based on the output current and the DC-link voltage to generate a current reference on the basis of the average of the rotor based q-axis current boundary value, and to drive a three-phase motor based on the current reference. Stabilized variable speed control of a motor by using a small-capacitance capacitor for a DC link of an inverter is performed and reliability of an inverter circuit improved.

Inverter control apparatus and control method thereof

A robot cleaner capable of vacuuming foreign materials on a floor includes a main body to which a dust collector is mounted and a vacuuming unit provided at a front portion of the main body to clean a floor. The vacuuming unit is configured to move relative to the main body. If it is determined that the robot cleaner is located near a wall or an obstacle, the vacuuming unit moves to the wall or the obstacle. Since the vacuuming unit contacts the wall or the obstacle, a region of a floor near the wall or the obstacle may be cleaned. Further, a manual cleaner may be selectively connected to a channel connector of the robot cleaner so that a user may choose automatic or manual cleaning of a floor at the user's convenience.

Robot cleaner and control method thereof

A method of estimating inductance of a permanent magnet synchronous motor (PMSM) includes injecting a signal having a frequency differing from an operating frequency of the PMSM into the PMSM during sensorless operation, sensing magnitudes of current responses to the injected signal, and estimating an inductance value at which the magnitude of the sensed current response is minimal to be an actual inductance value of the PMSM, thereby estimating inductance used in the PMSM regardless of position estimation error of the PMSM and thus more accurately and reliably estimating inductance of the PMSM.

Apparatus and method of estimating inductance of permanent magnet synchronous motor

A paper feeding mechanism, an image forming apparatus employing the same and a paper feeding method thereof are disclosed. In an image forming apparatus capable of performing the printing operations at a particular printing operation that calls for a particular corresponding reference paper feeding speed, a reduction in the paper feeding noise may be achieved by providing a pickup roller operable at pickup/feeding speed that is slower than the reference feeding speed called for by the particular printing speed and a registration roller operable at the reference feeding speed. In addition, the pickup period at which the pickup roller picks up successive sheets of paper may be shortened to account for the slower operating speed of the pickup roller.

Image forming apparatus and paper feeding method thereof

A motor assembly to minimize deformation of a vibration-proof member and to achieve stable motor mounting configuration, as well as an image forming apparatus employing the motor assembly, are disclosed. The motor assembly includes a motor, a fixing member to which the motor is fixed, a vibration-proof member provided between the motor and the fixing member to prevent vibration of the motor from being transmitted to the fixing member, and a reinforcing piece having a predetermined strength to prevent relative movement between the motor and the fixing member.

Image forming apparatus

Growing community of inventors

Yongin-si, South Korea

Young Jae Park