In this thesis, the effects of vibrotaction factors on tactile perception are described. Many studies on the effects of a vibration frequency or a stimulus area on a sensation magnitude and the effects of a vibration frequency on a threshold have been performed, however, actually, complex effect of ...
In this thesis, the effects of vibrotaction factors on tactile perception are described. Many studies on the effects of a vibration frequency or a stimulus area on a sensation magnitude and the effects of a vibration frequency on a threshold have been performed, however, actually, complex effect of each factor decides tactile sensation which human perceives. Therefore, measurement of variation of sensation magnitude defending on complex effect of each factor is necessary. Moreover, it must be confirmed how to perceive given stimulus as texture and decide control factor when desired texture is displayed.
First, an experiment on the influence of the frequency variation of normal vibration on perceiving spatial period is achieved, because it is known that fine textures come under a lot of influence of temporal variation, and we want to find possibility of displaying finer texture by vibration. An Integrated tactile display is used for every experiment. It can simulate the small-scale shapes and roughness of surface textures by individual drives of 6x8 pin array. The experiment results are expected that as vibration frequency increases, the spatial period is perceived smaller. From this experiment, I have found that sensation magnitude is able to affect the experimental result. So, it is necessary to consider some experiments for control of sensation magnitude.
Second experiment is performed for controlling sensation magnitude. It is confirmed how sensation magnitude varies as the stimulus area and the vibration frequency change. Tactile display device is composed of pin array, so, stimulus area and distribution are able to change by the width of each pin array and the number of vibrating pins. After the experiment, including additional factor, amplitude, the effects of three factors on perception of sensation magnitude are confirmed. It is ezpected that sensation magnitude is larger as the vibration frequency, amplitude and the stimulus area increases. Each factor will affect it independently. For this reason, when a texture is displayed using tactile display which is pin-arrayed type, each factor has to be controlled in consideration of variation of sensation magnitude.
Also, it is probably possible that the stimulus which pin array vibrates individually at different frequency is perceived the texture which has different amplitude. The temporal pattern may be perceived spatial pattern and it is able to display roughness or small-scale shape. Then pins' asynchronous vibration without amplitude control is possible to represent various textures and this result is able to apply to the design of novel tactile display systems for miniaturization.
Finally, it is confirmed to the effects of frequency variation on spatial period perception under the control of sensation magnitude because of the support of first experiment. This experiment is only about the frequency variation of normal vibration. The correlation between the vibration frequency and the perceived texture is found. The answer is that normal vibration makes possible to display finer texture. That is, the vibrating stimulus is more effective for displaying a fine surface. Using this result, the control of vibration frequency can make possible to display finer textures than real groove width.
In this thesis, the effects of vibrotaction factors on tactile perception are described. Many studies on the effects of a vibration frequency or a stimulus area on a sensation magnitude and the effects of a vibration frequency on a threshold have been performed, however, actually, complex effect of each factor decides tactile sensation which human perceives. Therefore, measurement of variation of sensation magnitude defending on complex effect of each factor is necessary. Moreover, it must be confirmed how to perceive given stimulus as texture and decide control factor when desired texture is displayed.
First, an experiment on the influence of the frequency variation of normal vibration on perceiving spatial period is achieved, because it is known that fine textures come under a lot of influence of temporal variation, and we want to find possibility of displaying finer texture by vibration. An Integrated tactile display is used for every experiment. It can simulate the small-scale shapes and roughness of surface textures by individual drives of 6x8 pin array. The experiment results are expected that as vibration frequency increases, the spatial period is perceived smaller. From this experiment, I have found that sensation magnitude is able to affect the experimental result. So, it is necessary to consider some experiments for control of sensation magnitude.
Second experiment is performed for controlling sensation magnitude. It is confirmed how sensation magnitude varies as the stimulus area and the vibration frequency change. Tactile display device is composed of pin array, so, stimulus area and distribution are able to change by the width of each pin array and the number of vibrating pins. After the experiment, including additional factor, amplitude, the effects of three factors on perception of sensation magnitude are confirmed. It is ezpected that sensation magnitude is larger as the vibration frequency, amplitude and the stimulus area increases. Each factor will affect it independently. For this reason, when a texture is displayed using tactile display which is pin-arrayed type, each factor has to be controlled in consideration of variation of sensation magnitude.
Also, it is probably possible that the stimulus which pin array vibrates individually at different frequency is perceived the texture which has different amplitude. The temporal pattern may be perceived spatial pattern and it is able to display roughness or small-scale shape. Then pins' asynchronous vibration without amplitude control is possible to represent various textures and this result is able to apply to the design of novel tactile display systems for miniaturization.
Finally, it is confirmed to the effects of frequency variation on spatial period perception under the control of sensation magnitude because of the support of first experiment. This experiment is only about the frequency variation of normal vibration. The correlation between the vibration frequency and the perceived texture is found. The answer is that normal vibration makes possible to display finer texture. That is, the vibrating stimulus is more effective for displaying a fine surface. Using this result, the control of vibration frequency can make possible to display finer textures than real groove width.
주제어
#진동자극
#요소변화
#질감지각
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