Other

Twinny Co., Ltd.

Yun Jeong Kim

Pyeong Ki Park

Han Joo Yoo

Jeong Ho Seo

Yong Jin Byeon

Kwang Kyo Oh

Koji Hamaoka

Hun Yub Bae

The present disclosure relates to an autonomous driving robot that can move without user intervention. The autonomous driving mobile robot able includes a PC that receives vision data from a vision device, sets a route, generates operation commands, and thereby controls a motor drive board and a power supply board, in which the PC is configured with a state determination module and a trajectory generation module and a state determination module determines whether the robot is at a location less than or equal to a first threshold distance from a destination is performed after determining a position and direction of the robot. When the robot is located at the location less than or equal to the first threshold distance from the destination, the trajectory generation module generates a stationary trajectory where the speed of the robot decreases and becomes zero as the robot approaches the destination.

Autonomous driving robot capable of obstacle avoidance movement

A Brushless Direct Current (BLDC) motor starting method and device are provided. With the method and/or device, startup noise and vibration and startup failure rate can be reduced using a constant low-speed startup scheme when the BLDC motor is in startup mode. Additionally, Pulse Width Modulation (PWM) duty is also maintained at low level when the BLDC motor starts up, thereby preventing excessive current from occurring due to desynchronization of the motor at startup, so that it is possible to optimize specifications of an inverter in the BLDC motor. The BLDC motor starts up with a synchronous speed and a PWM duty of a rotor of the BLDC motor being kept constant, and the BLDC motor switches to sensorless mode if a position of the rotor is detected a predetermined number of times or more during a specific time period.

Device and method for starting brushless direct current motor

Growing community of inventors

Sejong, South Korea

Yun Jeong Kim