US 12,011,739 B2
Dielectric elastomer vibration system and power supply device
Seiki Chiba, Tokyo (JP); Mikio Waki, Sakura (JP); Mitsuaki Ito, Ageo (JP); and Makoto Sawada, Ageo (JP)
Assigned to Seiki Chiba, Tokyo (JP); Mikio Waki, Sakura (JP); and ZEON CORPORATION, Tokyo (JP)
Appl. No. 17/278,787
Filed by Seiki Chiba, Tokyo (JP); Mikio Waki, Sakura (JP); and ZEON CORPORATION, Tokyo (JP)
PCT Filed Sep. 26, 2019, PCT No. PCT/JP2019/037785
§ 371(c)(1), (2) Date Mar. 23, 2021,
PCT Pub. No. WO2020/067252, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 2018-181924 (JP), filed on Sep. 27, 2018.
Prior Publication US 2022/0040734 A1, Feb. 10, 2022
Int. Cl. B06B 1/02 (2006.01); H04R 1/02 (2006.01); H04R 3/00 (2006.01); H10N 30/20 (2023.01); H10N 30/857 (2023.01); H10N 30/87 (2023.01)
CPC B06B 1/0269 (2013.01) [H10N 30/2047 (2023.02); H10N 30/857 (2023.02); H10N 30/871 (2023.02); H10N 30/877 (2023.02); B06B 2201/57 (2013.01); H04R 1/02 (2013.01); H04R 3/00 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A dielectric elastomer vibration system, comprising:
a dielectric elastomer vibrator that includes a dielectric elastomer layer and a pair of electrode layers sandwiching the dielectric elastomer layer; and
a power supply device that produces a potential difference across the pair of electrode layers,
wherein the dielectric elastomer vibrator exhibits a relationship between the potential difference across the pair of electrode layers and an amount of deformation induced by the potential difference, the relationship having: a high-response region in which a relatively large deformation is induced in response to change of the potential difference; a low-response region of lower-potential difference corresponding to a lower potential difference than the high-response region and in which a relatively small deformation is induced in response to change of the potential difference; and a low-response region of higher-potential difference corresponding to a higher potential difference than the high-response region and in which a relatively small deformation is induced in response to change of the potential difference or in which a break point of the dielectric elastomer layer is included, and
the power supply device produces the potential difference by applying a vibration signal voltage across the pair of electrode layers, the vibration signal voltage being generated by combining an alternating waveform voltage with a direct current bias voltage corresponding to a potential difference falling in the high-response region, and
the potential difference produced by the vibration signal voltage has a maximum value and a minimum value both falling within the high-response region.