The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Hiroyuki Shinoda - One of the best experts on this subject based on the ideXlab platform.
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Suction Pressure Tactile Display Using Dual Temporal Stimulation Modes
2020Co-Authors: Yasutoshi Makino, Hiroyuki ShinodaAbstract:In our former papers, we have proposed "Multi Primitive Tactile Stimulation" method for realizing a whole-palm-covering tactile display. Preparing two different kinds of tactile stimuli (primitives) within a unit area, we have realized various tactile sensations from a sharp-pin to a smooth surface by combination of them. In this paper, we propose another method for preparing multiple degree-of-freedom (DOF) tactile stimulations. That is temporal primitives. It is expected that we can activate two kinds of superficial mechanoreceptors selectively if we control the temporal Pressure patterns of the stimuli precisely, using the difference of the frequency characteristics among the tactile mechanoreceptor types. We realized stable temporal stimuli by "Suction Pressure Stimulation" which was also proposed in the previous papers, and confirmed that we could realize multi DOF stimuli by the temporal primitives.
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WHC - Selective stimulation to superficial mechanoreceptors by temporal control of Suction Pressure
First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2005Co-Authors: Yasutoshi Makino, Hiroyuki ShinodaAbstract:In this paper we propose a new set of primitives to realize a large-area covering realistic tactile display. They stimulate the skin surface with Suction Pressure (SPS method) as our former paper proposed. The difference from the former device is that a single Suction hole provides a pair of primitives. Since the identical hole provides the multiple primitives, we can expect multi-primitive tactile stimulation is realized more stably, and the physical structure is simpler than the former method. The method uses the frequency characteristics of the mechanoreceptor sensitivity and a feature of SPS that Suction Pressure through a hole does not reach the deep receptors, Pacinian corpuscles. We show the basic theory and results of fundamental experiments. In the experiments, we show the spatial feature of the virtual object (edged or round) can be controlled by the temporal profile of the primitives. We explain the reason of the phenomena based on a tactile perception model called simple bundle model.
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ICRA - A whole palm tactile display using Suction Pressure
IEEE International Conference on Robotics and Automation 2004. Proceedings. ICRA '04. 2004, 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper, we propose a large-area tactile display by controlling Suction Pressure. This research is based on our discovery of tactile illusion that pulling a skin through a hole with air Suction causes a sensation as if something like a stick is pushing the skin. This illusion implies that our mechanoreceptors are insensitive to the sign of stress (negative or positive), i.e. we detect not stress directly but strain energy. There are two key concepts to realize our tactile display. One is the tactile illusion mentioned above and the other is "multi primitive tactile stimulation." We explain our approach to produce various tactile sensations from a sharp edge to a plane surface with a simple structure of display device based on air Pressure control, and report the experimental results.
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HAPTICS - Multi primitive tactile display based on Suction Pressure control
12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems 2004. HAPTICS '04. Proceedings., 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper we propose a new method for displaying touch sensation by controlling Suction Pressure. We discovered a tactile illusion that pulling skin through a hole with Suction Pressure causes a feeling as if a stick is pushing the skin. This illusion is considered to be caused by the insensitivity of our mechanoreceptors to signs of stress (negative or positive) that are sensitive to the strain energy. Our tactile display is based on the key concept of this illusion and that of "multi-primitive stimulation." We show that a simple structure of a sparse stimulator array produces various tactile sensations from a sharp edge to a smooth plane surface.
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Multi primitive tactile display based on Suction Pressure control
Proceedings - 12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, HAPTICS, 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper we propose a new method for displaying touch sensation by controlling Suction Pressure. We discovered a tactile illusion that pulling skin through a hole with Suction Pressure causes a feeling as if a stick is pushing the skin. This illusion is considered to be caused by the insensitivity of our mechanoreceptors to signs of stress (negative or positive) that are sensitive to the strain energy. Our tactile display is based on the key concept of this illusion and that of "multi-primitive stimulation." We show that a simple structure of a sparse stimulator array produces various tactile sensations from a sharp edge to a smooth plane surface.
Satoshi Tadokoro - One of the best experts on this subject based on the ideXlab platform.
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EuroHaptics (2) - A Multi-DOF Haptic Representation Using Suction Pressure Stimuli on Finger Pads
Haptics: Neuroscience Devices Modeling and Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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a multi dof haptic representation using Suction Pressure stimuli on finger pads
International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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HAPTICS - Presenting virtual stiffness by modulating the perceived force profile with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:This paper reports a study on modulating the perceived stiffness by controlling the perceived force evoked from Suction Pressure stimuli. It demonstrates an early attempt of using Suction Pressure stimuli for augmenting the perceived stiffness of a spring. The purpose of this work is twofold; 1) to validate a requirement needed for the device in force enhancement applications, 2) to tentatively explore the effect of Suction Pressure stimuli on stiffness perception. In this study, we used physical springs for the stiffness stimuli, and a tool (tactile interface) was used for stiffness exploration. Human subjects were requested to explore and estimate the stiffness of a spring sample. Suction Pressure stimuli were applied on the contact areas between the finger the tool during stiffness exploration. The amount of Suction stimuli adjusts correspondingly with the measured force, but it is regulated by a psychophysical function. We introduced the gain to scale the measured force, thereby adjusting the profile of the Pressure stimuli. We found that the perceived stiffness of the spring appears to increase with higher gain. The result seems to suggest that stiffness augmentation is feasible by modulating the stiffness perception using multipoint Suction Pressure stimuli.
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HAPTICS - [D05] Presenting virtual stiffness with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:Summary form only given, as follows. This demo provides a hands-on experience to support the study on modulating the perceived stiffness by “controlling” the perceived force evoked by Suction Pressure stimuli. The purpose of this work is to demonstrate the possibility of controlling Suction Pressure stimuli to enhance stiffness perception. The approach is to sense the force acting on a grasped object and use that signal to control the tactile stimuli for inducing strain at the contact areas of the skin. The idea is to increase the strain energy density at the contacts to further stimulate the receptors. A psychophysical function was used to control the amount of stimulation. The Pressure stimuli were thought to enhance the strain energy density on the skin relative to the applied external force. From the subjects' responses, we found that the perceived stiffness of a spring sample appears to increase when adjusting the gain of the force signal.
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Presenting virtual stiffness by modulating the perceived force profile with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:This paper reports a study on modulating the perceived stiffness by controlling the perceived force evoked from Suction Pressure stimuli. It demonstrates an early attempt of using Suction Pressure stimuli for augmenting the perceived stiffness of a spring. The purpose of this work is twofold; 1) to validate a requirement needed for the device in force enhancement applications, 2) to tentatively explore the effect of Suction Pressure stimuli on stiffness perception. In this study, we used physical springs for the stiffness stimuli, and a tool (tactile interface) was used for stiffness exploration. Human subjects were requested to explore and estimate the stiffness of a spring sample. Suction Pressure stimuli were applied on the contact areas between the finger the tool during stiffness exploration. The amount of Suction stimuli adjusts correspondingly with the measured force, but it is regulated by a psychophysical function. We introduced the gain to scale the measured force, thereby adjusting the profile of the Pressure stimuli. We found that the perceived stiffness of the spring appears to increase with higher gain. The result seems to suggest that stiffness augmentation is feasible by modulating the stiffness perception using multipoint Suction Pressure stimuli.
Yasutoshi Makino - One of the best experts on this subject based on the ideXlab platform.
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Suction Pressure Tactile Display Using Dual Temporal Stimulation Modes
2020Co-Authors: Yasutoshi Makino, Hiroyuki ShinodaAbstract:In our former papers, we have proposed "Multi Primitive Tactile Stimulation" method for realizing a whole-palm-covering tactile display. Preparing two different kinds of tactile stimuli (primitives) within a unit area, we have realized various tactile sensations from a sharp-pin to a smooth surface by combination of them. In this paper, we propose another method for preparing multiple degree-of-freedom (DOF) tactile stimulations. That is temporal primitives. It is expected that we can activate two kinds of superficial mechanoreceptors selectively if we control the temporal Pressure patterns of the stimuli precisely, using the difference of the frequency characteristics among the tactile mechanoreceptor types. We realized stable temporal stimuli by "Suction Pressure Stimulation" which was also proposed in the previous papers, and confirmed that we could realize multi DOF stimuli by the temporal primitives.
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WHC - Selective stimulation to superficial mechanoreceptors by temporal control of Suction Pressure
First Joint Eurohaptics Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2005Co-Authors: Yasutoshi Makino, Hiroyuki ShinodaAbstract:In this paper we propose a new set of primitives to realize a large-area covering realistic tactile display. They stimulate the skin surface with Suction Pressure (SPS method) as our former paper proposed. The difference from the former device is that a single Suction hole provides a pair of primitives. Since the identical hole provides the multiple primitives, we can expect multi-primitive tactile stimulation is realized more stably, and the physical structure is simpler than the former method. The method uses the frequency characteristics of the mechanoreceptor sensitivity and a feature of SPS that Suction Pressure through a hole does not reach the deep receptors, Pacinian corpuscles. We show the basic theory and results of fundamental experiments. In the experiments, we show the spatial feature of the virtual object (edged or round) can be controlled by the temporal profile of the primitives. We explain the reason of the phenomena based on a tactile perception model called simple bundle model.
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ICRA - A whole palm tactile display using Suction Pressure
IEEE International Conference on Robotics and Automation 2004. Proceedings. ICRA '04. 2004, 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper, we propose a large-area tactile display by controlling Suction Pressure. This research is based on our discovery of tactile illusion that pulling a skin through a hole with air Suction causes a sensation as if something like a stick is pushing the skin. This illusion implies that our mechanoreceptors are insensitive to the sign of stress (negative or positive), i.e. we detect not stress directly but strain energy. There are two key concepts to realize our tactile display. One is the tactile illusion mentioned above and the other is "multi primitive tactile stimulation." We explain our approach to produce various tactile sensations from a sharp edge to a plane surface with a simple structure of display device based on air Pressure control, and report the experimental results.
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HAPTICS - Multi primitive tactile display based on Suction Pressure control
12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems 2004. HAPTICS '04. Proceedings., 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper we propose a new method for displaying touch sensation by controlling Suction Pressure. We discovered a tactile illusion that pulling skin through a hole with Suction Pressure causes a feeling as if a stick is pushing the skin. This illusion is considered to be caused by the insensitivity of our mechanoreceptors to signs of stress (negative or positive) that are sensitive to the strain energy. Our tactile display is based on the key concept of this illusion and that of "multi-primitive stimulation." We show that a simple structure of a sparse stimulator array produces various tactile sensations from a sharp edge to a smooth plane surface.
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Multi primitive tactile display based on Suction Pressure control
Proceedings - 12th International Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, HAPTICS, 2004Co-Authors: Yasutoshi Makino, Naoya Asamura, Hiroyuki ShinodaAbstract:In this paper we propose a new method for displaying touch sensation by controlling Suction Pressure. We discovered a tactile illusion that pulling skin through a hole with Suction Pressure causes a feeling as if a stick is pushing the skin. This illusion is considered to be caused by the insensitivity of our mechanoreceptors to signs of stress (negative or positive) that are sensitive to the strain energy. Our tactile display is based on the key concept of this illusion and that of "multi-primitive stimulation." We show that a simple structure of a sparse stimulator array produces various tactile sensations from a sharp edge to a smooth plane surface.
Lope Ben Porquis - One of the best experts on this subject based on the ideXlab platform.
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EuroHaptics (2) - A Multi-DOF Haptic Representation Using Suction Pressure Stimuli on Finger Pads
Haptics: Neuroscience Devices Modeling and Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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a multi dof haptic representation using Suction Pressure stimuli on finger pads
International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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HAPTICS - Presenting virtual stiffness by modulating the perceived force profile with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:This paper reports a study on modulating the perceived stiffness by controlling the perceived force evoked from Suction Pressure stimuli. It demonstrates an early attempt of using Suction Pressure stimuli for augmenting the perceived stiffness of a spring. The purpose of this work is twofold; 1) to validate a requirement needed for the device in force enhancement applications, 2) to tentatively explore the effect of Suction Pressure stimuli on stiffness perception. In this study, we used physical springs for the stiffness stimuli, and a tool (tactile interface) was used for stiffness exploration. Human subjects were requested to explore and estimate the stiffness of a spring sample. Suction Pressure stimuli were applied on the contact areas between the finger the tool during stiffness exploration. The amount of Suction stimuli adjusts correspondingly with the measured force, but it is regulated by a psychophysical function. We introduced the gain to scale the measured force, thereby adjusting the profile of the Pressure stimuli. We found that the perceived stiffness of the spring appears to increase with higher gain. The result seems to suggest that stiffness augmentation is feasible by modulating the stiffness perception using multipoint Suction Pressure stimuli.
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HAPTICS - [D05] Presenting virtual stiffness with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:Summary form only given, as follows. This demo provides a hands-on experience to support the study on modulating the perceived stiffness by “controlling” the perceived force evoked by Suction Pressure stimuli. The purpose of this work is to demonstrate the possibility of controlling Suction Pressure stimuli to enhance stiffness perception. The approach is to sense the force acting on a grasped object and use that signal to control the tactile stimuli for inducing strain at the contact areas of the skin. The idea is to increase the strain energy density at the contacts to further stimulate the receptors. A psychophysical function was used to control the amount of stimulation. The Pressure stimuli were thought to enhance the strain energy density on the skin relative to the applied external force. From the subjects' responses, we found that the perceived stiffness of a spring sample appears to increase when adjusting the gain of the force signal.
-
Presenting virtual stiffness by modulating the perceived force profile with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:This paper reports a study on modulating the perceived stiffness by controlling the perceived force evoked from Suction Pressure stimuli. It demonstrates an early attempt of using Suction Pressure stimuli for augmenting the perceived stiffness of a spring. The purpose of this work is twofold; 1) to validate a requirement needed for the device in force enhancement applications, 2) to tentatively explore the effect of Suction Pressure stimuli on stiffness perception. In this study, we used physical springs for the stiffness stimuli, and a tool (tactile interface) was used for stiffness exploration. Human subjects were requested to explore and estimate the stiffness of a spring sample. Suction Pressure stimuli were applied on the contact areas between the finger the tool during stiffness exploration. The amount of Suction stimuli adjusts correspondingly with the measured force, but it is regulated by a psychophysical function. We introduced the gain to scale the measured force, thereby adjusting the profile of the Pressure stimuli. We found that the perceived stiffness of the spring appears to increase with higher gain. The result seems to suggest that stiffness augmentation is feasible by modulating the stiffness perception using multipoint Suction Pressure stimuli.
Masashi Konyo - One of the best experts on this subject based on the ideXlab platform.
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Simultaneous Measurement of Skin Deformation and Perceptual Sensitivity Using Suction Pressure
2019 IEEE World Haptics Conference (WHC), 2019Co-Authors: Kaoru Saito, Masashi Konyo, Hikaru Nagano, Saito Sakaguchi, Naomi ArakawaAbstract:The measurement of perceptual sensitivity can be used for the clinical diagnosis and assessment of skin conditions. However, conventional approaches to evaluating the direct relationship between perceptual sensitivity and the skin mechanical properties have limitations. This study proposed a new approach to achieving the simultaneous measurement of skin deformation and perceptual sensitivity. We introduced Suction stimulation on the skin, which is commonly used for evaluating the skin mechanical properties. However, the standard Suction stimuli cannot produce sufficient stimuli to be perceived. We solved this issue by applying oscillated Suction Pressure in the frequency of 10 Hz. We presented the device mechanism and control method of the Pressure. As a pilot study, we investigated the relationship between the deformation of the forearm skin and perceptual sensitivity in thirteen participants. Experimental results suggested that the amount of skin displacement achieves better discrimination performance than the Suction Pressure levels.
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WHC - Simultaneous Measurement of Skin Deformation and Perceptual Sensitivity Using Suction Pressure
2019 IEEE World Haptics Conference (WHC), 2019Co-Authors: Kaoru Saito, Masashi Konyo, Hikaru Nagano, Saito Sakaguchi, Naomi ArakawaAbstract:The measurement of perceptual sensitivity can be used for the clinical diagnosis and assessment of skin conditions. However, conventional approaches to evaluating the direct relationship between perceptual sensitivity and the skin mechanical properties have limitations. This study proposed a new approach to achieving the simultaneous measurement of skin deformation and perceptual sensitivity. We introduced Suction stimulation on the skin, which is commonly used for evaluating the skin mechanical properties. However, the standard Suction stimuli cannot produce sufficient stimuli to be perceived. We solved this issue by applying oscillated Suction Pressure in the frequency of 10 Hz. We presented the device mechanism and control method of the Pressure. As a pilot study, we investigated the relationship between the deformation of the forearm skin and perceptual sensitivity in thirteen participants. Experimental results suggested that the amount of skin displacement achieves better discrimination performance than the Suction Pressure levels.
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EuroHaptics (2) - A Multi-DOF Haptic Representation Using Suction Pressure Stimuli on Finger Pads
Haptics: Neuroscience Devices Modeling and Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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a multi dof haptic representation using Suction Pressure stimuli on finger pads
International Conference on Human Haptic Sensing and Touch Enabled Computer Applications, 2014Co-Authors: Daiki Maemori, Lope Ben Porquis, Masashi Konyo, Satoshi TadokoroAbstract:Humans can perceive external forces applied on a grasping tool based on skin Pressure distribution at multiple contact areas during grasp. The authors have tried to represent external forces and torques by controlling the skin Pressure distributions using Suction stimuli and confirmed the potential but in a heuristic manner. In this paper, we investigate an improved method of skin stimulation based on a combination of psychophysical experiments and mechanical simulation. We focus on a simplification method of the complex strain energy density (SED) distribution at the contact areas with four quadrant values (SED index). The relationship between Suction Pressure and SED index was achieved by connecting the experiment and the mechanical simulation. We confirmed that a suitable SED index could represent the magnitudes of forces in multiple directions with a linear function. Experimental results also showed that the proposed method could represent arbitrary directions between pairs of the orthogonal axes.
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HAPTICS - Presenting virtual stiffness by modulating the perceived force profile with Suction Pressure
2014 IEEE Haptics Symposium (HAPTICS), 2014Co-Authors: Lope Ben Porquis, Daiki Maemori, Naohisa Nagaya, Masashi Konyo, Satoshi TadokoroAbstract:This paper reports a study on modulating the perceived stiffness by controlling the perceived force evoked from Suction Pressure stimuli. It demonstrates an early attempt of using Suction Pressure stimuli for augmenting the perceived stiffness of a spring. The purpose of this work is twofold; 1) to validate a requirement needed for the device in force enhancement applications, 2) to tentatively explore the effect of Suction Pressure stimuli on stiffness perception. In this study, we used physical springs for the stiffness stimuli, and a tool (tactile interface) was used for stiffness exploration. Human subjects were requested to explore and estimate the stiffness of a spring sample. Suction Pressure stimuli were applied on the contact areas between the finger the tool during stiffness exploration. The amount of Suction stimuli adjusts correspondingly with the measured force, but it is regulated by a psychophysical function. We introduced the gain to scale the measured force, thereby adjusting the profile of the Pressure stimuli. We found that the perceived stiffness of the spring appears to increase with higher gain. The result seems to suggest that stiffness augmentation is feasible by modulating the stiffness perception using multipoint Suction Pressure stimuli.
