Resonant-type smooth impact drive mechanism actuator using lead-free piezoelectric material

Yokozawa, Hiroki; Doshida, Yutaka; Kishimoto, Sumiaki; Morita, Takeshi

doi:10.1016/j.sna.2018.02.012

Cited by 42 publications

(20 citation statements)

References 13 publications

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“…These include 1) how to make highly efficient piezoelectric inorganics (such as PZT) more biocompatible, 2) how to improve modest piezoelectric constants of organic materials, and 3) how to obtain a robust control over dissolution rate of some biodegradable piezoelectric polymers (e.g., PLLA, silk, etc.). Solutions to the first problem include the use of biocompatible encapsulators or fabricating lead‐free piezoelectric inorganics . For the second problem, piezoelectricity in organic polymers can be enhanced by creating composites, mixing together organic and inorganic materials, or creating multilayer piezoelectric devices .…”

Section: Conclusion and Future Outlookmentioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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Recent advances in materials, manufacturing, biotechnology, and microelectromechanical systems (MEMS) have fostered many exciting biosensors and bioactuators that are based on biocompatible piezoelectric materials. These biodevices can be safely integrated with biological systems for applications such as sensing biological forces, stimulating tissue growth and healing, as well as diagnosing medical problems. Herein, the principles, applications, future opportunities, and challenges of piezoelectric biomaterials for medical uses are reviewed thoroughly. Modern piezoelectric biosensors/bioactuators are developed with new materials and advanced methods in microfabrication/encapsulation to avoid the toxicity of conventional lead‐based piezoelectric materials. Intriguingly, some piezoelectric materials are biodegradable in nature, which eliminates the need for invasive implant extraction. Together, these advancements in the field of piezoelectric materials and microsystems can spark a new age in the field of medicine.

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Section: Conclusion and Future Outlookmentioning

confidence: 99%

Piezoelectric Biomaterials for Sensors and Actuators

et al. 2018

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“…The use of the different terms rather seems to have historical reasons: "impact drive (mechanism)" is used for moving actuator motors, and mostly by authors whose works are to different extents based on the early works of Higuchi et al [35,110] on this type of motor; e.g., in [64,70,[113][114][115][116]. The derived term "smooth impact drive mechanism" is used for fixed actuator motors by authors who directly or indirectly refer to the works of Okamoto, Yoshida et al [26,117,118] (e.g., in [25,95,119,120]). On the other hand, "stick-slip drive" or similar has been used for inertia motors of any design, even if they clearly have a moving actuator; e.g., the motors of Niedermann et al [41] and Smith et al [51].…”

Section: Terminology and Proposed General Definitionmentioning

confidence: 99%

“…Usually, lead zirconate titanate (PZT) ceramic actuators are used. Recently, Yokozawa et al [119] presented the first inertia motor driven by a non-PZT piezoelectric actuator. As research on lead-free alternative materials progresses, we will see more such motors in the future.…”

Section: Solid State Actuatormentioning

confidence: 99%

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Piezoelectric Inertia Motors—A Critical Review of History, Concepts, Design, Applications, and Perspectives

Hunstig

2017

Actuators

109

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Piezoelectric inertia motors-also known as stick-slip motors or (smooth) impact drives-use the inertia of a body to drive it in small steps by means of an uninterrupted friction contact. In addition to the typical advantages of piezoelectric motors, they are especially suited for miniaturisation due to their simple structure and inherent fine-positioning capability. Originally developed for positioning in microscopy in the 1980s, they have nowadays also found application in mass-produced consumer goods. Recent research results are likely to enable more applications of piezoelectric inertia motors in the future. This contribution gives a critical overview of their historical development, functional principles, and related terminology. The most relevant aspects regarding their design-i.e., friction contact, solid state actuator, and electrical excitation-are discussed, including aspects of control and simulation. The article closes with an outlook on possible future developments and research perspectives.

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“…Impacts in novel mechanisms and their applications are investigated in [22]. Resonant type impact mechanism is analysed in [23]. Positioning using impact drive mechanism is investigated in [24].…”

Section: Introductionmentioning

confidence: 99%

Vibroimpact mechanism in one separate case

Ragulskis¹,

Ragulskis²

2019

Math. models, eng.

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It is known that in the vibroimpact system at the chosen values of parameters linear relationship between impact velocities and eigenfrequencies may exist. The purpose of this paper is to reveal the qualities of the systems of this type. Investigations are performed by analytical and numerical methods. It is determined that in the systems of this type nonlinear solutions with infinite series of harmonics exist. Multivalued stable and unstable regimes do not exist in the systems. The obtained analytical relationships enabled to reveal new qualities of the systems and to make useful conclusions. Keywords: characteristics of impact velocity and eigenfrequencies, free and decaying vibrations, phase trajectories of motions, harmonics of motions up to infinity.

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Resonant-type smooth impact drive mechanism actuator using lead-free piezoelectric material

Cited by 42 publications

References 13 publications

Piezoelectric Biomaterials for Sensors and Actuators

Piezoelectric Biomaterials for Sensors and Actuators

Piezoelectric Inertia Motors—A Critical Review of History, Concepts, Design, Applications, and Perspectives

Vibroimpact mechanism in one separate case

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