Development of a soft metal hydride actuator using a laminate bellows for rehabilitation systems

Ino, Shuichi; Sato, Mitsuru; Hosono, Minako; Izumi, Taisuke

doi:10.1016/j.snb.2008.10.054

Cited by 43 publications

(24 citation statements)

References 11 publications

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“…The reversible chemical reaction between metal hydride alloys and hydrogen gas as another possibility to pressurize mobile soft robots is described in detail in [40][41][42]; this section refers to these sources.…”

Section: Reversible Chemical Reaction Between Metal Hydrides and Hydrmentioning

confidence: 99%

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Adami

Seibel

2018

Actuators

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The design and construction of a soft robot are challenging tasks on their own. When the robot is supposed to operate without a tether, it becomes even more demanding. While a tethered operation is sufficient for a stationary use, it is impractical for wearable robots or performing tasks that demand a high mobility. Choosing and implementing an on-board pneumatic pressure source are particularly complex tasks. There are several different pressure generation methods to choose from, each with very different properties and ways of implementation. This review paper is written with the intention of informing about all pressure generation methods available in the field of soft robotics and providing an overview of the abilities and properties of each method. Nine different methods are described regarding their working principle, pressure generation behavior, energetic considerations, safety aspects, and suitability for soft robotics applications. All presented methods are evaluated in the most important categories for soft robotics pressure sources and compared to each other qualitatively and quantitatively as far as possible. The aim of the results presented is to simplify the choice of a suitable pressure generation method when designing an on-board pressure source for a soft robot.

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Section: Reversible Chemical Reaction Between Metal Hydrides and Hydrmentioning

confidence: 99%

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Adami

Seibel

2018

Actuators

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“…For safety and comfortable usage, rehabilitation equipment and assistive devices must be light and soft compared to the human body. Therefore, instead of the metal bellows, we developed a soft and light bellows element made of a trilayer laminate film of polyethylene-aluminumpolyester (Ino et al, 2009b).…”

Section: Laminate Film Bellowsmentioning

confidence: 99%

Soft and Noiseless Actuator Technology Using Metal Hydride Alloys to Support Personal Physical Activity

Ino¹,

Sato²

2012

Assistive Technologies

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“…5 is considered unsuitable for hydrogen desorption/absorption because its equilibrium pressure section has too great a slant for the necessary hydrogen transfer. However, the equilibrium pressure section of a LaNi-based alloy, which contains rareearth materials, is comparatively flat and wide in the PCT diagram [10]. Therefore, the LaNi-based MH alloy is a better prospective composition for the S-MHA.…”

Section: A Necessary Properties Of the Mh Alloymentioning

confidence: 99%

“…An MH actuator generates a highoutput force, although its size is small. For example, an MH actuator containing an MH alloy of 6 g provides a maximum output force of 160 N [10].…”

Section: Introductionmentioning

confidence: 99%

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Development of a metal hydride actuator driven only by solar heat

Sato

Hosono

Yamashita

et al. 2011

2011 1st International Conference on Electrical Energy Systems

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A metal hydride (MH) actuator provides mechanical work by applying the hydrogen pressure transition that originates from the reversible reaction of the MH alloy as it absorbs and desorbs hydrogen gas. The MH actuators that have been reported employ a Peltier element or an electrical heating resistance wire as a heat source. This paper describes the design of an MH actuator that is driven by low-quality heat sources, such as solar heat. A certain composition of a LaNi 5 -based alloy that produces desorbing and absorbing reactions through a lowtemperature difference is specified. This alloy composition can provide a large amount of hydrogen desorption using solar heat and a large amount of hydrogen absorption by natural air cooling in an adequate reaction time. To improve the moving speed and to control the performance, a reciprocating air compressor that applies this solar heat-driven MH actuator is proposed. These findings support the efficacy of an MH actuator operating without electric or fossil fuel energy consumption.

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Development of a soft metal hydride actuator using a laminate bellows for rehabilitation systems

Cited by 43 publications

References 11 publications

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

On-Board Pneumatic Pressure Generation Methods for Soft Robotics Applications

Soft and Noiseless Actuator Technology Using Metal Hydride Alloys to Support Personal Physical Activity

Development of a metal hydride actuator driven only by solar heat

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