서지주요정보
Enabling physical interaction through wrist-mounted haptic controller with force feedback = 힘 피드백을 통한 물리적 상호작용 구현이 되는 손목 장착형 햅틱 컨트롤러 연구
서명 / 저자 Enabling physical interaction through wrist-mounted haptic controller with force feedback = 힘 피드백을 통한 물리적 상호작용 구현이 되는 손목 장착형 햅틱 컨트롤러 연구 / Minjae Jo.
발행사항 [대전 : 한국과학기술원, 2023].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8040573

소장위치/청구기호

학술문화관(문화관)B1층 보존서고

MGCT 23014

휴대폰 전송

도서상태

이용가능(대출불가)

사유안내

반납예정일

리뷰정보

초록정보

As various user experiences are possible in virtual reality (VR), the need for more effective and precise haptic feedback is emerging. Therefore, this thesis proposes a wrist-mounted haptic controller that can directly provide feedback on various physical interactions occurring within VR. The controller in this study provides force feedback based on a motor system to realize the physical characteristics of a virtual object or environment and applies a Force Sensing Register (FSR) to directly measure the force applied to the user's palm. In this study, a controller design using a single link system was explored to provide a wide range of activities while applying a design to minimize the limitation of heavy and weak durability of the existing motor system device.

가상 현실에서 다양한 사용자 경험이 가능해지면서 보다 효과적이고 정밀한 촉각 피드백의 필요성이 대두되고 있다. 따라서, 본 논문에서는 가상 현실 안에서 발생하는 다양한 물리적 상호작용에 대해 직접적으로 피드백이 가능한 손목 착용형 햅틱 컨트롤러를 제안하고자 한다. 본 연구의 컨트롤러는 가상 물체나 환경의 물리적 특성을 구현하기 위하여 모터 시스템에 기반하여 힘 피드백을 제공하고, 힘 측정 센서를 적용하여 사용자의 손바닥 쪽에 가해지는 힘을 직접 측정하고 이를 통하여 제어기를 구성한다. 본 연구에서는 기존 모터 시스템 장치의 무겁고 약한 내구성의 한계를 최소화하기 위한 디자인을 적용함과 동시에 넓은 활동 범위를 제공하기 위하여 단일 링크 시스템만을 활용한 컨트롤러 디자인을 제시하였다.

서지기타정보

서지기타정보
청구기호 {MGCT 23014
형태사항 iii, 22 p. : 삽도 ; 30 cm
언어 영어
일반주기 저자명의 한글표기 : 조민재
지도교수의 영문표기 : Sang Ho Yoon
지도교수의 한글표기 : 윤상호
Including appendix
학위논문 학위논문(석사) - 한국과학기술원 : 문화기술대학원,
서지주기 References : p. 18-22
주제 Haptic feedback
Wearable devices
Haptic rendering
햅틱 피드백
웨어러블 기기
햅틱 렌더링
QR CODE

책소개

전체보기

목차

전체보기

이 주제의 인기대출도서

A brushless DC motor for precision torque control is used as a power source, and the torq generated here is amplified by the gear ratio (1:2.609) in the belt-pulley system after passing through t spring-actuated brake. The amplified torque is converted into a force through a 1-link manipulator al then driven to the palm, which is measured directly by the FSR. The sensor part includes an intern spr

The motor is controlled by a motor driver, and the brake controller also operates indepen- dently. VR scene runs on an experimental PC, which is connected with VR HMD via USB, and all of this information is shared by the microcontroller through their own communication methods, such as analog, digital IO, and Wi-Fi.

The flow chart was designed to be connected in closed-loop form by providing haptic feedback through the controller after calculating force feedback from the user's hand tracking using the internal Leapmotion controller of VR HMD.

Overall Controller Specification

In estimating thresholds experiments, the user directly wears the controller, and only delivers opinions on feedback stimuli without any movement. In measuring the force ofhaptic feedback experiments, the user performs the interaction while wearing only the VR HMD, and measures the force generated by the torque sensor.

Subject 1's Result of minimum threshold experiments. In this graph, it can be seen that the threshold appears at 0.0335 N.

Subject 1's Result of difference threshold experiments. In this graph, it can be seen that the threshold appears at 0.2N.

Designed to secure the device to the floor via a test bed and to position the torque sensor so that the force can be applied vertically. The table below the sensor represents the specification.

(a) Inertia Scenario: user lifting dumbbells, (b) Elasticity Scenario: pressing springs, and (c) Viscosity Scenario: Swinging the paddles. When interacting within these VR scenarios, physical characteristics are estimated by simultaneously measured hand movement and force.

To obtain the results of inertia rendering, a force graph against acceleration is drawn. Each force feedback is generated in proportion to the desired inertia value, which is estimated by the gradient of each trend line.

To obtain the results ofelasticity rendering, a force graph against displacement is drawn. Each force feedback is generated in proportion to the desired elasticity value, which is estimated by the gradient ofeach trend line.

To obtain the results of viscosity rendering, a force graph against velocity is drawn. Each force feedback is generated in proportion to the desired viscosity value, whichisestimated by the gradient of each trend line.

Within a. given VR environment (aenw,Uenw)Cenu), when a user's dynamic movement (auesr, Uuser」Cuser is estimated, the physical properties of any two objects (M, B, K) are specified based on the minimum, difference threshold of the force feedback (F,min」 Fdiff).