A whole palm tactile display using suction pressure

Makino, Yasutoshi; Asamura, N.; Shinoda, Hiroyuki

doi:10.1109/robot.2004.1308040

Cited by 21 publications

(9 citation statements)

References 6 publications

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“…The interface to the skin consists of channels each 2 mm in diameter. A similar display is shown in [82]. Using negative air pressure, the tactile stimulus is generated by suction through 19 channels 2.5 mm in diameter with 5 mm intervals.…”

Section: Pneumaticmentioning

confidence: 94%

Actuator Design

Haus¹,

Kern²,

Matysek³

et al. 2014

Springer Series on Touch and Haptic Systems

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Actuators are the most important elements of every haptic device, as their selection, respectively, their design influences the quality of the haptic impression significantly. This chapter deals with frequently used actuators structured based on their physical working principle. It focuses on the electrodynamic, electromagnetic, electrostatic, and piezoelectric actuation principle. Each actuator type is discussed as to its most important physical basics, with examples of their dimensioning, and one or more applications given. Other rarely used actuation principles are mentioned in several examples. The previous chapters were focused on the basics of control-engineering and kinematic design. They covered topics of structuring and fundamental character. This and the following chapters deal with the design of technical components as parts of haptic devices. Experience teaches us that actuators for haptic applications can rarely be found "off-the-shelf". Their requirements always include some outstanding features in rotational frequency, power density, working point, or geometry. These specialties make it necessary and helpful for their applicants to be aware of the capabilities and possibilities of modifications of existing actuators. Hence, this chapter addresses both groups of readers: users who want to choose a certain actuator and the mechanical engineer who intends to design a specific actuator for a certain device from scratch.Before a final selection of actuators is made, the appropriate kinematics and the control-engineering structure, according to the previous chapters, should have been fixed. However, in order to handle these questions in a reasonable way, some basic understanding of actuators is mandatory. In particular, the available energy densities, forces, and displacements should be estimated correctly for the intended haptic application. This section provides some suggestions and guidelines to help and preselect appropriate actuators based on the typical requirements. 9.1.

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Section: Pneumaticmentioning

confidence: 94%

Actuator Design

Haus¹,

Kern²,

Matysek³

et al. 2014

Springer Series on Touch and Haptic Systems

View full text Add to dashboard Cite

show abstract

“…There are several kinds of tactile stimuli, but we preferred to apply air suction to induce force sensations. Using an appropriate hole size to vacuum the skin can induce almost the same mechanoreceptor activity as pressing the skin [2]. Suction stimuli have the advantage of creating new interfaces that contain no moving parts.…”

Section: Pen-type Pseudo-haptic Interfacementioning

confidence: 99%

Pseudo-Haptic Interface Using Multipoint Suction Pressures and Vibrotactile Stimuli

Maemori

Porquis

Konyo

et al. 2015

Lecture Notes in Electrical Engineering

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Dexterity for fine manipulation requires information from multiple skin contacts to detect the external forces applied on a tool. In this study, we developed a haptic interface to represent the external forces or stiffness of objects so that the pressure distributions at the contact pads can be controlled by using suction stimuli. The original interface had the drawback of being unable to represent high-frequency force sensations such as friction and collision because of air stimuli have large-scale characteristics. Thus, we integrated vibrotactile stimuli into the interface to represent high-frequency force sensations.

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“…The present study focuses on a tactile display that can reproduce the stiffness distribution of soft materials, for use during intravital palpation. Many groups have reported tactile displays for presenting stiffness information based on the use of an electrorheological fluid (Taylor, et al, 1998), air pressure (Makino, et al, 2004) and a dilatant fluid (Saga, et al, 2009). However, the spatial resolution of these displays is poor (10 mm or more).…”

Section: Introductionmentioning

confidence: 99%

Tactile display for presenting stiffness distribution using magnetorheological fluid

Ishizuka

Lorenzoni

Miki

2014

Mechanical Engineering Journal

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This paper describes a tactile display for reproducing stiffness distributions based on magnetorheological (MR) fluid. This display can represent stiffness distribution by controlling the applied magnetic field locally. Computed tomography (CT) and endoscopy are currently used to diagnosis intravital conditions. However, CT cannot detect tumors smaller than 5 mm, and endoscopy can only diagnosis the tissue surface. Since tumors are stiffer than normal tissue, endoscopic palpation may be effective for detecting tumors smaller than 5 mm located beneath the tissue surface. To perform such palpation, a tactile display that can reproduce the spatial stiffness distribution of tissue is strongly required. For intravital tissue, the display must be capable of creating stiffness values ranging from about 200 to about 600 kPa with a spatial resolution of less than 5 mm. In the present study, a tactile display is proposed that exploits the ability of a MR fluid to change its stiffness in a magnetic field. In the proposed device, the MR fluid is encapsulated in an acrylic chamber covered by a thin flexible membrane. We first characterized the mechanical properties of the device and then, conducted sensory experiments with five subjects to verify that the device could display stiffness distribution. The magnetic field was produced by a cylindrical permanent magnet with a diameter of 5 mm, and the applied field strength was controlled by varying the separation between the magnet and the display. The experimental results indicated that the proposed display could successfully recreate the stiffness distribution including stiffness of tumor tissue under a local magnetic field of 200 mT. The device was then evaluated using five subjects, who were asked to touch the device with their index fingers and estimate the size of the stiff spot. Although the results varied among subjects, all were capable of perceiving spots smaller than 5 mm.

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A whole palm tactile display using suction pressure

Cited by 21 publications

References 6 publications

Actuator Design

Actuator Design

Pseudo-Haptic Interface Using Multipoint Suction Pressures and Vibrotactile Stimuli

Tactile display for presenting stiffness distribution using magnetorheological fluid

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