Development of an actuator by using metal hydride.

Sasaki, Tadayuki; Kawashima, T.; Aoyama, Hideki; Ifukube, Tohru; Ogawa, Takatoshi

doi:10.7210/jrsj.4.119

Cited by 10 publications

(4 citation statements)

References 1 publication

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“…The hydrogenated MH releases hydrogen upon heating; on the contrary, the MH absorbs hydrogen when cooled down. We have developed some MH actuators, which perform mechanical work by means of the pressure changes resulting from the absorption or desorption of hydrogen gas by the MH (Figure 1) [1] [2].…”

Section: Introductionmentioning

confidence: 99%

Portable Compressor System Using MU Alloys, Employed as Assistive Devices

Sato

Ino

Yoshida

et al. 2006

TENCON 2006 - 2006 IEEE Region 10 Conference

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A metal hydride (MH) actuator that uses the reversible reaction between the heat energy and mechanical energy of a hydrogen absorbing alloy is characterized by its small size, low weight, noiseless operation and a mechanical compliance. Therefore, the MH actuators are suitable as a power source of rehabilitation or assistive devices. However, the MH actuators have a disadvantage that the hydrogen gas inside the actuators is not safe. In order to avoid the disadvantage and obtain wider application than conventional MH actuators, we proposed an MH air compressor that produces the air pressure by converted from the hydrogen pressure of the MH actuator. The advantages of this air compressor that size is small and shape is changed into freely enabled realization of unprecedented assistive technology devices for persons with disability. A new small transfer aid system which helps rising from a wheelchair is experimentally developed by making use of some advantages of this compressor.

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Section: Introductionmentioning

confidence: 99%

Portable Compressor System Using MU Alloys, Employed as Assistive Devices

Sato

Ino

Yoshida

et al. 2006

TENCON 2006 - 2006 IEEE Region 10 Conference

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“…One of these new actuators is an actuator which uses a metal hydride (hereafter abbreviated to MH actuator) [1,2]. The MH actuator utilizes the phenomenon that the equilibrium hydrogen pressure of a metal hydride changes with temperature.…”

Section: Introductionmentioning

confidence: 99%

“…In previous papers, Sasaki et al [1] developed an MH actuator which can directly drive a bellows without any valve by heating or cooling the metal hydride discontinuously, using Peltier elements, and proved its utility. In this system, however, there are two serious problems because of the use of an open-loop system.…”

Section: Introductionmentioning

confidence: 99%

A servo actuator which uses a metal hydride-design of a pressure control system and its consideration

Kimura¹,

Takamori²,

Yasuda³

et al. 1988

Advanced Robotics

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“…MH actuators are composed of a solidified MH alloy powder, Peltier modules to electrically control the temperature of the MH alloy, a temperature sensor, a container for these elements, and an end effecter to transfer the hydrogen pressure into a driving force (Sasaki et al, 1986;Ino et al, 1992).…”

Section: Basic Structure and Characteristicsmentioning

confidence: 99%