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Recognition of Force Magnitude Applied to Pressure-Sensitive Conducting Rubber Sensors on the Basis of Frequency Table

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Journal of Sensor Technology 2018年第4期8卷 88-95页

作者： Masato Ohmukai yasushi kami Department of Electrical and Computer Engineering National Institute of Technology Akashi College Akashi Japan

This study aims to develop a force sensor system with a pressure-sensitive conductive rubber (PSCR), which shows the decrease of electrical resistance when pressure is applied. The biggest obstacle of the sensor is a poor reproducibility in the characteristic between the force and the resistance of the PSCR, which derived from a hysteresis and time variant properties. In this paper, we propose one method for recognizing a magnitude of the force to the PSCR using frequency tables. The validity of the proposed method is confirmed on the basis of experimental results.

关键词： Electric Conducting Rubber Force Sensor Frequency Table Recognition of Force Magnitude

Stacked Structure Improves Output Reproducibility of Rubber Force Sensor

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Journal of Sensor Technology 2016年第3期6卷 75-80页

作者： Masato Ohmukai yasushi kami Ryo Yawata Department of Electrical and Computer Engineering Akashi College of Technology Akashi Japan Department of Electrical and Electronics Engineering University of Fukui Fukui Japan

The electricity-conducting rubber force sensor is an attractive candidate as a low-cost material for tactile sensors. This article shows the evidence that the output reproducibility is largely improved when two identical sheets of the sensors are stacked. The stacked structure may reduce accidental error that is a fatal obstacle in an accurate control system.

关键词： Rubber Force Sensor Stacking Structure Low-Cost Sensor in Control System

Conducting Rubber Force Sensor: Transient Characteristics and Radiation Heating Effect

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Journal of Sensor Technology 2013年第3期3卷 36-41页

作者： Masato Ohmukai yasushi kami Ken Ashida Department of Electrical and Computer Engineering Akashi College of Technology Akashi Japan Department of System Science School of Engineering Science Osaka University Toyonaka Japan

Compression force sensors are indispensable to tactile sensors in humanoid robots. We are investigating the application of low-cost electrically conducting rubber sheets to force sensors, of which the biggest problem is its poor reproducibility. We have found that the deposition of aluminum by a vacuum evaporation method shows such an excellent characteristic that the sensor can be used in a wide range under 10.33 N/cm2. In this article, we investigated time response of the sensors and also studied how the radiation heating during the vacuum evaporation process for Al deposition affected their sensing property. We found that the radiation heating induces deterioration from the point of view of standard deviation of the output voltage of the sensors at a transient region. We convince that a low-temperature Al deposition method should be developed to form electrodes on the electrical conducting rubber sensors.

关键词： Conducting Rubber Force Sensor Electrode Vacuum Deposition Radiation Heating

Electrode for Force Sensor of Conductive Rubber

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Journal of Sensor Technology 2012年第3期2卷 127-131页

作者： Masato Ohmukai yasushi kami Ryosuke Matsuura Department of Applied Analysis and Complex Dynamical Systems Kyoto University Kyoto Japan Department of Electrical and Computer Engineering Akashi College of Technology Hyogo Japan

Tactile sensors are believed to be a key element in order to realize robotic fingers to catch a fragile object without damage. Force sensitive conductive rubber is a low-cost material and then attractive for the application to tactile sensors. We have studied the effect of electrodes attached to the rubber sheets. We have tried four kinds of electrodes: vacuum deposited Al, adhesive Cu tape, Al thin film sheet and silver paste. It can be concluded that vacuum deposited Al has the highest potential from the practical point of view;it has the widest dynamic range and good precision at the same time.

关键词： Conductive Rubber Force Sensor Robot Finger Electrode Vacuum Deposition

Electrode for Force Sensor of Conductive Rubber

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