We propose an electromagnetic-based braille display that can represent two-dimensional information. The key principle is a flip-latch structure, which allows satisfying requirements of both protrusion force for recognition and low power consumption. A magnet-inserted has eccentric shape, driven by flips over the protruded voice coil pushing pin. Then it acts as latch to lock maintain pin without additional energy manufacture modules arrange them into with total 192 pins (16 columns 12 rows)....

We demonstrate a robust flexible tactile actuator that is capable of working under high external pressures. The based on pyramidal microstructured dielectric elastomer layer inducing variation in both mechanical and properties. vibrational performance the can be modulated by changing geometric parameter microstructures. evaluated high-pressure loads up to 25 kPa, which over typical range pressure applied when humans touch or manipulate objects. Due benefit nonlinearity structure, could...

ABSTRACT Recent studies on autonomous robotic manipulation for manufacturing automation have heavily relied environmental perception through vision, based artificial intelligence. However, vision‐recognition errors are inevitable, and misalignment can lead to jamming, decreasing the task success rates, potentially damaging workpieces. This letter introduces a peg‐in‐hole control approach that merges parallel position/force controller with network, designed estimate errors. In real‐world...

Recently, various methods using, simultaneously, two types of tactile feedback have been proposed to emulate a real object. However, the possible masking effect when providing has scarcely reported. In this study, we investigated caused by mechanical vibration on perception electrovibration. The absolute and difference thresholds electrovibration were measured according presence/absence, frequency, intensity vibration. threshold tended increase in form ramp function, as stimulus (mechanical...

This paper presents a new subminiature impact type actuator which creates the haptic sensation in mobile device. Recently, linear resonance actuators (LRA) are widely used. One of key differences between an LRA and traditional eccentric motor is that generates vibrotactile through for minimizing response time. The strategy operation near resonant frequency, however, brought issue creating can be strong enough to feel arbitrary frequency. In order achieve this issue, we adopt unstable...

This article presents a novel design of miniature haptic actuator based on magnetorheological fluids for mobile applications with the aim providing various sensations to users in devices. The primary goal is miniaturize its size while achieving large forces and low power consumption. To this end, study proposes actuator’s piston head (or plunger) cone shape activate multiple modes fluids. A prototype was designed fabricated simulation model. Using dynamic test frame, performance evaluated...

This study presents a miniature haptic actuator (10 mm (L) × 10 (W) 6.5 (H)) based on magnetorheological fluids, which is designed to provide realistic touch sensations users. Its primary goals are evaluate mechanical or actuation performances of the prototype and assess its effectiveness in conveying users by conducting psychophysical experiments. The performance evaluated prototype’s output forces from perspectives using dynamic test frame. experiments studied human subjects’ perceptions...

As the gestural interface is emerging as one of key interfaces for mobile computing, ability these to provide physical feedback becoming more important. Especially in context interacting with a virtual world, generating proper important when seeking engage users simulated world. However, due inherent size problems mechanical structures and power issues, most handheld devices relied on vibrotactile feedback. To resolve this issue, paper proposes haptic module that can represent realistic...

This paper presents a new miniature haptic display to convey ample information user of handheld interface. There are buttons on interfaces or general electronic devices, but existing provide feedback only one passive pattern user. Because humans perceive tactile and kinesthetic simultaneously when they handle objects the proposed actuator provides both sensations at once. It is able generate various levels pressing button under diverse situations. Also, vibrotactile can be delivered for...

This study presents a novel design of miniature haptic actuator based on Magneto-Rheological (MR) fluids for mobile applications, and it evaluates the performance using simulation model. The primary goal applications is to miniaturize its size while generating realistic sensations. To this end, proposes MR actuator’s piston head (or plunger) in cone-shape activate multiple modes (direct shear, flow squeeze modes). Using model developed by integrating magnetic force equations, was evaluated...

Recently, methods and devices that simultaneously utilize two or more tactile feedback types have been proposed for immersive interaction with virtual objects. However, the masking effect, which makes us less sensitive to various stimuli presented at same time, has scarcely explored. In this study, we propose a novel rendering algorithm can eliminate mutual effect user’s sensation level, when mechanical vibration electrovibration are applied simultaneously. First, functions of were...

This paper presents design and testing of a haptic keypad system using an array actuators. The research goals are to construct prototype actuators evaluate the performance for rendering. To this end, MR actuator was designed fabricated such that it can convey realistic force feedback users. demonstrate applications actuator, constructed, which consists following components: (1) 3 × actuators, (2) sensing resistors (FSR), (3) controller including micro-processor, current amplifier wireless...

This paper presents a new miniature haptic display to convey ample information user of handheld interface. There are buttons on interfaces or general electronic devices, but existing provide feedback only one passive pattern user. Because humans perceive tactile and kinesthetic simultaneously when they handle objects, the proposed actuator provides both sensations at once. It is able generate various levels pressing button under diverse situations. Also, vibrotactile can be delivered for...

We demonstrate a pitch-tuned coiled polymer actuator that can produce large thermally-induced-contractile-strain under light-loading. For pitch-tuning of the (CPA), we sequentially implement twist-insertion for coiling nylon-6 fiber, mechanical pre-stretching, and couple thermal treatments. By adopting our methodology, geometric structure original CPA be consistently modulated with pre-stretching ratio. When heated light-loading, contractile strain far beyond limited space to contract. Due...