Immersion, interaction, and imagination are three features of virtual reality (VR). Existing VR systems possess fairly realistic visual auditory feedbacks, however, poor with haptic feedback, by means which human can perceive the physical world via abundant properties. Haptic display is an interface aiming to enable bilateral signal communications between computer, thus greatly enhance immersion interaction systems. This paper surveys paradigm shift occurred in past 30 years, classified into...

With a proper energy management strategy (EMS), supercapacitor can be integrated into droop-controlled dc microgrid as an independent storage system (SCESS). The resulted could supply repeatedly quick bursts of electrical power due to load or source transients and improve quality lifetime other distributed generations (DGs) storages. In this paper, novel control for SCESS is proposed. method uses the virtual impedance loop add resistor capacitor connected in series between converter bus,...

Force feedback gloves have found many applications in fields such as teleoperation and virtual reality. In order to enhance the immersive feeling of interaction with remote or environments, glove-like haptic devices are used, which enable users touch manipulate objects a more intuitive direct way via dexterous manipulation sensitive perception capabilities human hands. this survey, we aim identify gaps between existing force desired ones that can provide robust realistic sensation diverse...

Abstract In the era of ubiquitous computing with flourished visual displays in our surroundings, application haptic feedback technology still remains its infancy. Bridging gap between and real world to enable ambient on various physical surfaces is a grand challenge field human-computer interaction. This paper presents concept an active electronic skin, characterized by three features: richness (multi-modal stimuli), interactivity (bi-directional sensing actuation capabilities), invisibility...

Performance evaluation is indispensable for a surgical simulator to become acceptable. A haptics-based dental (iDental) has been developed and preliminary user on its first-generation prototype carried out gain the knowledge. Based detailed requirement analysis of Periodontics procedures, combined method including qualitative quantitative was designed. Construct validity used compare performance difference between two groups participants (faculty members graduate students). These were...

This paper presents an interactive exoskeleton device for hand rehabilitation, iHandRehab, which aims to satisfy the essential requirements both active and passive rehabilitation motions. iHandRehab is comprised of exoskeletons thumb index finger. These are driven by distant actuation modules through a cable/sheath transmission mechanism. The each finger has 4 degrees freedom (DOF), providing independent control all joints. joint motion accomplished parallelogram mechanism so that joints...

Force feedback gloves are promising for producing immersive haptic sensations in virtual reality systems or intuitive control of remote robots dexterous manipulation tasks. Existing mainly adopt rigid actuators. In this article, we propose a force glove using pneumatically powered fiber-reinforced soft bending Based on the unilateral deformable feature actuator, dorsal-side mounted soft-rigid linkage mechanism is proposed to produce fingertip feedback. We incorporated and experimentally...

Telesurgery is an interdisciplinary field of teleoperated robotics and robot-assisted minimally invasive surgery, has good promising future. In this work, the structure work flow tele-neurosurgery are addressed at first. Then key technologies involved, including our newly developed surgical robot, untouched methodology in localizing marks for registration, video overlay simulation, transmission network communication, safeguards, discussed, which guarantee safety feasibility clinical...

This paper presents a new exoskeleton with 4 degrees of freedom (DOF) for index finger rehabilitation. The device can generate bi-directional movement all joints the through cable transmission, which is required passive and active trainings. With two prismatic kinematic in design, it accommodate to some extent variety hand sizes. relation between joint angles corresponding simple greatly simplifies high level motion control. As motor capability patients may be different range change along...

Maintaining a high mental engagement is critical for motor rehabilitation interventions. Achieving flow experience, often conceptualized as highly engaged state, an ideal goal tasks. This paper proposes virtual reality-based fine fingertip task in which the difficulty maintained to match individual abilities. The aim of this study decode intrinsic fluctuations experience from electroencephalogram (EEG) signals during execution task, addressing gap research that overlooks these fluctuations....

A new method to realize stable and realistic cutting simulation using an impedance display haptic device microcomputer is presented in this paper. Material removal or a critical task dental preparation surgery simulation. In paper, piecewise contact force model proposed approximately describe the process. Challenging issues of minimizing difference between are analyzed. The contact-based developed for one-dimensional can be expanded three-dimensional cases. Local model-based multirate...

Six-degree-of-freedom (6-DOF) haptic rendering for fine manipulation in narrow space is a challenging topic because of frequent constraint changes caused by small tool movement and the requirement to preserve feel fine-features objects. In this paper, we introduce configuration-based constrained optimization method solving problem. We represent an object using hierarchy spheres, i.e., sphere tree, which allows faster detection multiple contacts/collisions among objects than polygonal mesh...

To evaluate the fidelity of iDental system and investigate its utility performance on simulated drilling operations, user studies consisting objective subjective evaluations were performed.A voxel-based simulation sub-system in was employed for evaluation.Twenty participants enrolled to take part experiments divided into two groups: novice resident.A combined evaluation method including methods employed.The included dental tasks: caries removal operation pulp chamber opening operation.In...

Flyback converters show the characteristics of current source when operating in discontinuous conduction mode (DCM) and boundary (BCM), which makes it widely used photovoltaic grid-connected micro-inverter. In this paper, an active clamp interleaved flyback converter with combination DCM BCM is proposed micro-inverter to achieve zero voltage switching (ZVS) for both primary switches fully recycle energy leakage inductance. The control method active-clamping part include only one capacitor....

There are two main challenges in simulating bi-manual dental operations with six-degrees-of-freedom (6-DoF) haptic rendering. One is to simulate large deformation and force response of a tongue under multi-region contacts mirror, the other when probe inserts into narrow periodontal pocket, which leads simultaneous different types between both rigid deformable objects (i.e., tooth its surrounding gingiva), we call hybrid contacts, as well frequent contact switches. In this paper, address...

Background Laser techniques have been introduced into dentistry to overcome the drawbacks of traditional treatment methods. The existing methods in dental clinical operations for tooth crown preparation several which affect long-term success treatment. Objective To develop an improved robotic system manipulate laser beam achieve safe and accurate three-dimensional (3D) ablation, thus realize automatic operations. Method We present ablation restorative system, combining robotics technology,...

A compact pen-type force sensor is developed to study the feasibility of force-based signature verification. force-sensing method based on leverage effect proposed detect 3-D forces between pen's tip and paper. low-cost assembly designed, which integrated by five off-the-shelf 1-D sensors. matrix-based measurement model established compute signal in task coordinate system (CS), transformed from CS angle a 2-D sensor. The structural parameters are determined both achieve required accuracy...

Brainwave entrainment using rhythmic visual and/or auditory stimulation has shown its efficacy in modulating neural activities and cognitive ability. In the presented study, we aim to investigate whether haptic could enhance short-term attention. An experiment with sensorimotor rhythm (SMR) increasing protocol was performed which participants were sinusoidal vibrotactile stimulus of 15 Hz on their palm. Test Variables Attention (T.O.V.A.) before after stimulating session....