Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists
An energy-efficient circuit for driving PZT actuators using a charge recovery technique is explored in this paper. Mobile and wearable devices for physical assists requiring extended battery life and/or minimal battery weight will benefit from this technology. PZT is a capacitive transducer and can...
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| Format: | Article |
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ASME International
2018
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| Online Access: | http://hdl.handle.net/1721.1/118911 https://orcid.org/0000-0003-4749-4979 https://orcid.org/0000-0003-3155-6223 |
| _version_ | 1826212249150160896 |
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| author | Barragan, Patrick R Tsukahara, Shinichiro Asada, Haruhiko |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Barragan, Patrick R Tsukahara, Shinichiro Asada, Haruhiko |
| author_sort | Barragan, Patrick R |
| collection | MIT |
| description | An energy-efficient circuit for driving PZT actuators using a charge recovery technique is explored in this paper. Mobile and wearable devices for physical assists requiring extended battery life and/or minimal battery weight will benefit from this technology. PZT is a capacitive transducer and can produce constant force for extended periods with little power consumption. Furthermore, energy can be saved by moving charge from one PZT stack to another instead of draining to ground. This paper describes an efficient charge-recovery circuit that can capture 40-65% of the energy in one PZT unit by transferring it to another PZT unit. The battery then must only supply the remaining charge thereby increasing battery life. First, the basic principle of the charge-recovery technique is described. The idealized circuit architecture and possible implementation are presented. Then, the electrical circuit behavior is analyzed. PZT hysteresis is discussed, and results are presented. Topics: Design, Circuits, Batteries, Battery life, Energy consumption, Transducers, Weight (Mass), Force, Drainage, Actuators |
| first_indexed | 2024-09-23T15:18:23Z |
| format | Article |
| id | mit-1721.1/118911 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:18:23Z |
| publishDate | 2018 |
| publisher | ASME International |
| record_format | dspace |
| spelling | mit-1721.1/1189112022-10-02T02:04:22Z Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists Barragan, Patrick R Tsukahara, Shinichiro Asada, Haruhiko Massachusetts Institute of Technology. Department of Mechanical Engineering Barragan, Patrick R Tsukahara, Shinichiro Asada, Haruhiko An energy-efficient circuit for driving PZT actuators using a charge recovery technique is explored in this paper. Mobile and wearable devices for physical assists requiring extended battery life and/or minimal battery weight will benefit from this technology. PZT is a capacitive transducer and can produce constant force for extended periods with little power consumption. Furthermore, energy can be saved by moving charge from one PZT stack to another instead of draining to ground. This paper describes an efficient charge-recovery circuit that can capture 40-65% of the energy in one PZT unit by transferring it to another PZT unit. The battery then must only supply the remaining charge thereby increasing battery life. First, the basic principle of the charge-recovery technique is described. The idealized circuit architecture and possible implementation are presented. Then, the electrical circuit behavior is analyzed. PZT hysteresis is discussed, and results are presented. Topics: Design, Circuits, Batteries, Battery life, Energy consumption, Transducers, Weight (Mass), Force, Drainage, Actuators 2018-11-06T15:06:00Z 2018-11-06T15:06:00Z 2011-11 2018-10-23T16:12:08Z Article http://purl.org/eprint/type/ConferencePaper 978-0-7918-5476-1 http://hdl.handle.net/1721.1/118911 Barragán, Patrick R., et al. “Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists.” ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 2, 31 October - November 2, 2011, Arlington, Virigina, ASME, 2011, pp. 783–90. © 2011 by ASME https://orcid.org/0000-0003-4749-4979 https://orcid.org/0000-0003-3155-6223 http://dx.doi.org/10.1115/DSCC2011-5977 ASME 2011 Dynamic Systems and Control Conference and Bath/ASME Symposium on Fluid Power and Motion Control, Volume 2 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf ASME International ASME |
| spellingShingle | Barragan, Patrick R Tsukahara, Shinichiro Asada, Haruhiko Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title | Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title_full | Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title_fullStr | Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title_full_unstemmed | Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title_short | Design of Energy-Saving PZT Drive Amplifiers for Mobile and Wearable Physical Assists |
| title_sort | design of energy saving pzt drive amplifiers for mobile and wearable physical assists |
| url | http://hdl.handle.net/1721.1/118911 https://orcid.org/0000-0003-4749-4979 https://orcid.org/0000-0003-3155-6223 |
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