DextrES: Wearable Haptic Feedback for Grasping in VR Technology Essay

Article Summary
“DextrES: Wearable Haptic Feedback for Grasping in VR via a Thin Form-Factor Electrostatic Brake”
Your Name
Subject and Section
Professor’s Name
Date of Submission
Introduction
Virtual reality (VR) is used to train individuals for circumstances that require excellent dexterity. In this paper, the researchers examined the abilities of the DextrES by comparing its benefits in VR and AR (Hinchet et al., 2018).
Design
System Overview
DextrES is an accommodating wearable haptic glove that provides cutaneous and kinesthetic stimuli through an almost weightless form factor that weighs less than eight grams. The design is based on an electrostatic clutch that can generate a maximum of twenty Newtons of holding force per finger (Hinchet et al., 2018).
The following are the considerations in building the device: 1) The ES brake requires an adequate force and speed, subWatt power consumption, and low-form factor. The device needs to conform to the shape of the fingers while providing a good bending and small restoring force. Hence, ductile metals are excluded in material selection. Furthermore, the ES brake must be able to engage and disengage promptly to provide a more realistic feeling to the user; 2) Haptic glove integration is used to allow for complex hand movements with twenty-seven degrees of freedom. This is used to have sufficient and arbitrary hand poses.; and 3) VR integration permits the immediate interaction (Hinchet et al., 2018).
Mechanism
ES Braking Mechanism
The brake is made of eighteen centimeters of thin, flexible metal strips that can produce a maximum of twenty newtons per pair of strips. It is attached to the back of the hand and each finger, thereby conforming to the actual hand shape. Each brake is composed of two one hundred micrometer steel strips that are disjointed by a thin insulation layer glued to one strip. This forms a variable capacitor (Cstrip (Hinchet et al., 2018)).
286890392975000The following formulas are used to compute the variable capacitor (Cstrip), Force compression (Fcompression), Friction force (Ffriction), and power consumption (PESbrake), respectively (Hinchet et al., 2018).
2368494134979Figure SEQ Figure \* ARABIC 1. Formula for Cstrip00Figure SEQ Figure \* ARABIC 1. Formula for Cstrip
...