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In this study, we demonstrate the characteristics of an electrovibration tactile display with a 1 mm resolution. Electrovibration is one of the promising stimulus methods for mobile tactile devices because of its simplicity in terms of structure of the tactile display and principle. While several groups have developed electrovibration tactile displays, the resolution of the displays have not been...
An optical fiber tactile sensor based on specklegram analysis is demonstrated. The system consists of microbending transducers attached to semi-rigid plates and distributed in form of array. The specklegrams produced by the multimode fibers are recorded and them the variations on fiber status, related to force magnitude, are assessed by specklegrams correlation. Finally, the spatial information was...
The development of an optical fiber specklegram sensor for detection of force myography (FMG) signals produced by hand forces and movements is presented. The optomechanical transducers are attached to the user forearm, causing variations on speckle field intensities, which are processed and then correlated to particular hand postures. The results indicated the viability to identify changes on hand...
Gripping is a very important function in daily life and there will be a best form for gripping for each person. If the form is best, then it will contain some information about the physical and mental condition of the person, and there might be some common mathematical formulas by which we can describe the best form to each person. Such concept as to best fit everybody may be the concept of universal...
In this paper, we introduce a passive haptic device which consists of wires with servo brakes and its control method for physical support of human being. Since servo brakes control a point constrained by wires, this passive system is intrinsically safe and has a wide operating range. We especially develop a motion support system controlled on plane and conduct a path following experiment for illustrating...
In this paper, we introduce a novel technology to convert bioelectrical signals into sound and its application in biofeedback. The surface electromyogram is adopted as the bioelectrical signal and converted into an auditory signal. The sound conversion occurs inside a wearable device. In general, visual feedback can provide more information than acoustic feedback, however, we assume that the latter...
One of the most amazing phenomena widely observed in nature is self-assembly; living systems spontaneously form their body structure through the developmental process. While this remarkable phenomenon are not thoroughly understood in biology, the concept of self-assembly becomes undeniably indispensable also in artificial systems as they increase in size and complexity. Based on this consideration,...
In this study, we propose a self-repairing mechanism for modules. This mechanism has been developed by studying the self-repairing processes found in nature. Proposed model is considered with the aid of energy given from the external environment. We investigate a self-repairing process using small modules actuated by vibration. We first describe the proposed self-repairing mechanism and its application...
The car transportation system, which termed as iCART (intelligent cooperative autonomous robot transporters), is developed for handling the car in the narrow space, substituting the parking and unmanning the transportation of cars. iCART is composed of two robots and these robots transport the car in coordination based on a leader-follower type distributed motion control algorithm. To avoid damaging...
One of the most graceful phenomena widely observed in nature is self-assembly: living systems spontaneously assemble their body structure through the developmental process. Because of this case, we believe that the concept of self-assembly becomes undeniably indispensable in artificial systems as they increase in size and complexity. Based on this consideration, we intend to deal with the emergent...
One of the most amazing phenomena widely observed in nature is self-assembly; living systems spontaneously form their body structure through the developmental process. While this remarkable phenomenon are not thoroughly understood in biology, the concept of self-assembly becomes undeniably indispensable also in artificial systems as they increase in size and complexity. Based on this consideration,...
Usually, the composition of discontinuous stator PMLSM (DSPM-LSM) is a stator block (accelerator, re-accelerator, and decelerator) and the free-running section. However, in this system, if a secondary mover stops in the free-running section, restart cannot be performed. Then, arrangement of the newly proposed stator block arranges a stator to intermittence, and the mover and one stator always overlap...
In this paper, we propose a new car transportation system referred to as iCART(intelligent cooperative autonomous robot transporters). This system consists of two robots for the car transportation. Each robot is controlled by using a decentralized control algorithm for transporting the car in coordination. A trajectory for transporting the car is given to one of robots, and another robot estimates...
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