Robotik-Materialien Patent 2023

Capacitive Self-Sensing for Electrostatic Transducers with High Voltage Isolation

Us20230200250a1 20230622 d00004

Transducer systems disclosed herein include self-sensing capabilities. In particular, electrostatic transducers include a low voltage electrode and a high voltage electrode. A low voltage sensing unit is coupled with the low voltage electrode of the electrostatic transducer. The low voltage sensing unit is configured to measure a capacitance of the electrostatic transducer, from which displacement of the electrostatic transducer may be calculated. High voltage drive signals received by the high voltage electrode during actuation may be isolated from the low voltage sensing unit. The isolation may be provided by dielectric material of the electrostatic transducer, a voltage suppression component, and/or a voltage suppression module comprising a low impedance ground path. In the event of an electrical failure of the transducer, the low voltage sensing unit may be isolated from high voltages.

Author(s): Nikolaus Correll and Khoi D Ly and Nicholas Alexander Kellaris and Christoph Matthias Keplinger
Number (issue): US Patent App. 17/928,453
Year: 2023
Month: June
Day: 22
Bibtex Type: Patent (patent)
Electronic Archiving: grant_archive
URL: https://patentimages.storage.googleapis.com/b1/3a/e3/b8b80684ea0304/US20230200250A1.pdf

BibTex

@patent{PCT-US20230200250A1,
  title = {Capacitive Self-Sensing for Electrostatic Transducers with High Voltage Isolation},
  abstract = {Transducer systems disclosed herein include self-sensing capabilities. In particular, electrostatic transducers include a low voltage electrode and a high voltage electrode. A low voltage sensing unit is coupled with the low voltage electrode of the electrostatic transducer. The low voltage sensing unit is configured to measure a capacitance of the electrostatic transducer, from which displacement of the electrostatic transducer may be calculated. High voltage drive signals received by the high voltage electrode during actuation may be isolated from the low voltage sensing unit. The isolation may be provided by dielectric material of the electrostatic transducer, a voltage suppression component, and/or a voltage suppression module comprising a low impedance ground path. In the event of an electrical failure of the transducer, the low voltage sensing unit may be isolated from high voltages.},
  number = {US Patent App. 17/928,453},
  month = jun,
  year = {2023},
  slug = {pct-us20230200250a1},
  author = {Correll, Nikolaus and Ly, Khoi D and Kellaris, Nicholas Alexander and Keplinger, Christoph Matthias},
  url = {https://patentimages.storage.googleapis.com/b1/3a/e3/b8b80684ea0304/US20230200250A1.pdf},
  month_numeric = {6}
}