Learning-Based Thermal Rendering in Telepresence

Guiatni, Mohamed; Benallègue, A.; Kheddar, Abderrahmane

doi:10.1007/978-3-540-69057-3_103

Cited by 24 publications

(10 citation statements)

References 6 publications

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“…To date, most thermal displays are composed of a Peltier element (PE), a heatsink, and a temperature sensor (Ino et al, 1993;Yamamoto et al, 2004;Guiatni et al, 2008). The temperature of the top side of the PE is controlled using the sensor input in a feedback loop while the heatsink, placed against the bottom side of the PE, is used to evacuate excess heat from the system.…”

Section: The Thermal Displaymentioning

confidence: 99%

“…The display consists of four thermal units (Peltier element, thermocouple, and copper diffuser), placed in line on top of a custom water-cooled copper heatsink. Guiatni et al, 2008). While voltage control using pulse width modulation (PWM) of the DC input voltage is simple to implement, it has some drawbacks compared to direct current control.…”

Section: Controlmentioning

confidence: 99%

“…A considerable number of tactile displays have been developed in the last decade (Yamamoto et al, 2004;Yang et al, 2007;Guiatni et al, 2008). However, metrics to assess the thermal performance of such displays are still lacking.…”

Section: Technical Characterizationmentioning

confidence: 99%

“…For this reason, the grand majority of the current temperature displays have been exclusively used to simulate different thermal properties of materials in order to improve object identification in virtual and tele-operated environments (Ino et al, 1993;Yamamoto et al, 2004;Guiatni et al, 2008). This focus on virtual rendering of material properties has limited the design of thermal displays and bounded the research on thermal perception.…”

mentioning

confidence: 99%

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Encoded and Crossmodal Thermal Stimulation through a Fingertip-Sized Haptic Display

et al. 2015

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Haptic displays aim at artificially creating tactile sensations by applying tactile features to the user's skin. Although thermal perception is a haptic modality, it has received scant attention possibly because humans process thermal properties of objects slower than other tactile properties. Yet, thermal feedback is important for material discrimination and has been used to convey thermally encoded information in environments in which vibrotactile feedback might be masked by noise and/or movements. Moreover, the well-reported influence of temperature over tactile processing makes thermal displays good candidates for the development of crossmodal haptic interfaces, in which temperature is used to manipulate other sensations. Here, we present a thermal display able to render four individually controlled temperatures at the user's fingertip along with its technical characterization and psychophysical evaluation. Device performance was assessed in terms of accuracy and repeatability. In the psychophysical evaluation, we first show that the device can render perceivable temperature gradients at the level of the fingertip, thereby extending the concept of thermally encoded information to fingertip-sized thermal displays. Second, we show that increasing temperature improves stiffness precision. Results show that neglected features of thermal feedback, i.e., encoded and crossmodal thermal stimulation, can be provided by fingertip-sized thermal displays to improve haptic manipulations.

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Section: The Thermal Displaymentioning

confidence: 99%

Section: Controlmentioning

confidence: 99%

Section: Technical Characterizationmentioning

confidence: 99%

mentioning

confidence: 99%

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Encoded and Crossmodal Thermal Stimulation through a Fingertip-Sized Haptic Display

et al. 2015

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“…However, in these researches, heat flow is not actively taken into account for the feedback controller. Although heat flow control has also been researched (6) (7) , temperature control is not explicitly considered in the researches. Meanwhile, a heat disturbance observer-based control system (8) which is able to control temperature while suppressing disturbance heat flow at the same time was reported (9) .…”

Section: Introductionmentioning

confidence: 99%

Control of Thermal Conductance with Detection of Single Contacting Part for Rendering Thermal Sensation

2016

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The rendering of tactile sensations has recently been attracting attention in the fields of multimedia and communication. This study focuses on thermal sensation, which is one of the important elements for rendering a tactile sensation. Humans feel an object by hand movements such as tracing, grasping, and stroking. In response to such movements, it is necessary to take into account the change in the contacting point on the system. However, most conventional studies on thermal rendering did not take such situations into account in their system design. This study aims to fill this gap by proposing a control method for reproducing thermal conductance with the detection of a single contacting part. In this study, a copper plate attached to a Peltier device is regarded as a thermal system, and the system is modeled with three parts. Heat disturbance observers and heat inflow observers are then allocated to each part, and the thermal conductance at any single part is virtually reproduced. Moreover, a detection method of single contacting part is introduced in the proposed system. Combining the detection method with the controller enables different thermal sensations to be rendered depending on the contacting part.

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Control of Thermal Conductance of Peltier Device Using Heat Disturbance Observer

Morimitsu

Katsura

2013

Electrical Engineering Japan

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SUMMARYIn industry, temperature control and heat flow control are now applied in many thermal devices, including Peltier devices, which facilitates heat transfer by the Peltier effect. Generally, temperature control compensates for heat flowing from the external environment, while heat actively flows into the system during heat flow control. Thus, temperature control and heat flow control differ from each other. However, there have been no detailed discussions of a thermal control process in which the thermal conductance control ranges between 0 and ∞. This paper focuses on thermal conductance control and the construction of a thermal conductance control system for a Peltier device using a heat disturbance observer. When using the thermal conductance controller, the thermal conductance control is altered and the system becomes thermally compliant with the external environment. This paper also presents experimental results that confirm the validity of the proposed control system.

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Learning-Based Thermal Rendering in Telepresence

Cited by 24 publications

References 6 publications

Encoded and Crossmodal Thermal Stimulation through a Fingertip-Sized Haptic Display

Encoded and Crossmodal Thermal Stimulation through a Fingertip-Sized Haptic Display

Control of Thermal Conductance with Detection of Single Contacting Part for Rendering Thermal Sensation

Control of Thermal Conductance of Peltier Device Using Heat Disturbance Observer

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