Hyundai Motor Company

Korea Advanced Institute of Science and Technology

Hankook Tire Co., Ltd.

Electronics and Telecommunications Research Institute

Sejong University

Yong Hun Kim

Jong Ho Lee

Kyung Soo Kim

Min Woo Han

Woo Je Sung

Sung Jun Kim

Su Woong Lee

Jin Woo Song

Sangwon Um

Junsuk Lee

Shihua Ming

Min Jun Choi

Seokjae Lee

Do Hoang Viet

Eung Ju Kim

A method is described in which a plurality of magnetic field norms is obtained using a plurality of magnetic field sensor units, each of the plurality of magnetic field sensor units being arranged to measure a magnetic field at a different height while being mounted to an object, each of the plurality of magnetic field norms being a norm of the magnetic field measured by a corresponding one of the plurality of magnetic field sensor units; and the plurality of magnetic field norms is matched with a magnetic field map of an indoor area including a plurality of sub-areas to estimate a location of the object as one of the plurality of sub-areas.

Techniques for indoor positioning

A motor control system is provided for compensating disturbance. The system includes a controller that supplies an input voltage to a motor based on the difference between a current command value to a motor and an actual current of the motor. A motor modeling part outputs a motor output current based on an input voltage from the controller and a disturbance observation part is formed as a reverse model of the motor modeling part to remove current noise using a current differentiation filtering method. Additionally, a disturbance compensation amount determination part determines a disturbance compensation amount based on the disturbance estimated by the disturbance observation part.

Motor control system and method for compensating disturbance

A system for compensating for disturbance of a motor for motor driven power steering is provided. The system for compensating for disturbance of a motor for motor driven power steering compensates for the disturbance based on a closed loop based input value prediction model unit, separately predicts an input value from a command by a closed loop based input value prediction model unit, and compensates for disturbance in accordance with a desired disturbance frequency band when there is a difference between the predicted input value and an input value error-compensated by a feedback controller.

System for compensating for disturbance of motor for motor driven power steering

A non-pneumatic tire is disclosed herein. The non-pneumatic tire includes a cylindrical tread configured to come into contact with a road surface, an aluminum wheel configured to form a circumference smaller than that of the tread and concentrically disposed inside the tread, and a polyurethane spoke configured to perform a shock absorbing action while connecting the tread with the aluminum wheel. The aluminum wheel includes a plurality of depressed grooves formed at predetermined intervals along the circumferential surface of the aluminum wheel. A plurality of vibration isolators made of vibration isolation material is inserted into the grooves.

Non-pneumatic tire having improved riding comfort

A method for recognizing markers printed on a learning material, includes sampling an image of the learning material; grouping the sampled image of pixels into a first image group and a second image group based on a threshold; and calculating medians of the first image group and the second image group to update the threshold with a first average value of the calculated medians. Further, the method for recognizing markers printed on the learning material includes repeating the above until a difference between a previous threshold and an updated threshold is equal to or smaller than a reference value; binarizing an image captured by a camera based on the updated threshold; and detecting the markers based on the binary image.

Method for recognizing markers using dynamic threshold and learning system based on augmented reality using marker recognition

Disclosed herein is a method of designing spokes of a non-pneumatic tire which randomly arranges spokes around a circumference to optimize noise dispersion. The method of designing spokes of a non-pneumatic tire includes placing a plurality of spokes () holding and supporting a tread () to be radially installed around a circumference of the tire on a circular spoke support () under the tread () to be in contact with the ground, wherein the spokes () are arranged at three angles on the circular spoke support () around the circumference of the tire, the three angles being divided into a small angle (a), a medium angle (b) and a large angle (c), and the spokes () are arranged at irregular angles under a condition that a ratio (q) of the large angle (c) to the small angle (a) is greater than a ratio (p) of the medium angle (b) to the small angle (a).

Method of designing spokes of non-pneumatic tire

Growing community of inventors

Daejeon, South Korea

Yong Hun Kim