Search Results - "HOSAKA, Hiroshi"

Spin acceleration mechanism for wave energy converter using gyroscopic effect and geared feedback by Toyoshima, Akio, Hosaka, Hiroshi

“…•Gyroscopic generator without spinning motor.•Power generation from arbitrary vibration.•Positive feedback of gyro torque to increase spin speed. [Display…”
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Resonant-type Smooth Impact Drive Mechanism (SIDM) actuator using a bolt-clamped Langevin transducer by Nishimura, Takuma, Hosaka, Hiroshi, Morita, Takeshi

“…► The resonant type Smooth Impact Drive Mechanism is proposed. ► This driving principle enables simpler stator transducer and powerful operation. ► Bolted…”
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Analytical and Experimental Study on Gyroscopic Power Generator with Power Feedback by Hosaka, Hiroshi, Tajima, Yuki

“…A gyroscopic power generator that self-accelerates its spinning velocity via positive power feedback is developed. In our previous study, a power of 1.8 W was…”
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High-power piezoelectric vibration model considering the interaction between nonlinear vibration and temperature increase by Miyake, Susumu, Ozaki, Ryohei, Hosaka, Hiroshi, Morita, Takeshi

“…•Piezoelectric nonlinear vibration was represented by nonlinear Young’s modulus.•Nonlinear coefficients increase with temperature increase.•Temperature…”
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A miniaturized resonant-type smooth impact drive mechanism actuator by Morita, Takeshi, Murakami, Hiroaki, Yokose, Takami, Hosaka, Hiroshi

“…A smooth impact drive mechanism (SIDM) is one type of piezoelectric actuator that has been put into practical use. In previous SIDMs, soft-type multilayered…”
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Piezoelectric nonlinear vibration focusing on the second-harmonic vibration mode by Ozaki, Ryohei, Liu, Yaoyang, Hosaka, Hiroshi, Morita, Takeshi

“…•A nonlinear vibration model including the second order compliance was proposed.•The temperature was kept constant to measure the effect of harmonic vibration…”
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Dynamic control of the resonant frequency of ultrasonic transducer by Yokozawa, Hiroki, Twiefel, Jens, Weinstein, Michael, Hosaka, Hiroshi, Morita, Takeshi

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Resonant-Type Smooth Impact Drive Mechanism Actuator Operating at Lower Input Voltages by Morita, Takeshi, Nishimura, Takuma, Yoshida, Ryuichi, Hosaka, Hiroshi

“…We report on the design and fabrication of a resonant-type smooth impact drive mechanism (SIDM) actuator based on a multilayered piezoelectric ceramic…”
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High-power Vibration Generator Using Gyroscopic Effect by Hosaka, Hiroshi, Oonishi, Yoshinori, Tajima, Yuki, Yamashita, Akira

“…A gyroscopic power generator that generates a power of 1.8 W is developed with a rotor of 100 mm diameter and 500 rpm spin speed. In conventional vibration…”
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Process Evaluation of Robot Development Projects by Proposal Data Analysis by Asano, Shigeru, Wada, Masanori, Sato, Tomomasa, Hosaka, Hiroshi

“…This study investigated the process evaluation of robot development projects. We propose a quantitative method to evaluate whether the projects advanced to the…”
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Community Proactivity in Disaster Preparation: Research Based on Two Communities in Japan by Hashimoto, Takaaki, Karasawa, Kaori, Hirayama, Kazuyuki, Wada, Masanori, Hosaka, Hiroshi

“…This study examined the determinants of people’s participation in community-based disaster preparedness efforts. We administered surveys to residents of two…”
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Shape memory piezoelectric actuator by Morita, Takeshi, Kadota, Yoichi, Hosaka, Hiroshi

“…The shape memory piezoelectric actuator can be operated using a pulsed voltage, so that small energy consumption and small voltage operation can be realized…”
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Non-hysteresis and perfect linear piezoelectric performance of a multilayered lithium niobate actuator by Kawamata, Akito, Hosaka, Hiroshi, Morita, Takeshi

“…A LiNbO3 piezoelectric single crystal is expected to have superior linearity and non-hysteresis in piezoelectric performance. By optimizing the cutting angle…”
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Resonant-Type Smooth Impact Drive Mechanism Actuator with Two Langevin Transducers by Suzuki, Munesuke, Hosaka, Hiroshi, Morita, Takeshi

“…A smooth impact drive mechanism (SIDM) is a unique piezoelectric actuator that is widely used as a camera focusing mechanism, cell phone lens movement…”
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Simplified circuit modeling and fabrication of intrabody communication devices by Hachisuka, Keisuke, Terauchi, Yusuke, Kishi, Yoshinori, Sasaki, Ken, Hirota, Terunao, Hosaka, Hiroshi, Fujii, Katsuyuki, Takahashi, Masaharu, Ito, Koichi

“…Intrabody communication using the human body as the transmission medium enables wireless communication without emitting radio waves into the surrounding…”
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Damping characteristics of beam-shaped micro-oscillators by Hosaka, Hiroshi, Itao, Kiyoshi, Kuroda, Susumu

“…The damping characteristics of beam-shaped microactuators that oscillate in the transverse direction are analytically evaluated to establish a design method…”
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Nondoped Potassium Niobate Ceramics Synthesized by Hydrothermal Method with Optimum Temperature Condition by Ishikawa, Mutsuo, Takiguchi, Norihito, Hosaka, Hiroshi, Morita, Takeshi

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Technology of electric power generators using mechanical vibrations for wearable information equipment by Hosaka, Hiroshi

“…In recent times, a number of information equipment and sensors that are wearable have been developed, such as cellular phones, wristwatch PCs and…”
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Refractive Index Memory Effect of Ferroelectric Materials Induced by Electrical Imprint Field by Ohashi, Toshinori, Hosaka, Hiroshi, Morita, Takeshi

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Utilization of Permittivity Memory Effect for Position Detection of Shape Memory Piezoelectric Actuator by Kadota, Yoichi, Hosaka, Hiroshi, Morita, Takeshi

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