3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements
We present the design, fabrication, and characterization of a MEMS-based 3-bit Digital-to-Analog Converter (DAC) that allows the generation of large displacements. The DAC consists of electrostatic bending-plate actuators that are connected to a mechanical amplifier (mechAMP), enabling the amplifica...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Actuators |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-0825/10/8/182 |
| _version_ | 1827686319270133760 |
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| author | Lisa Schmitt Philip Schmitt Martin Hoffmann |
| author_facet | Lisa Schmitt Philip Schmitt Martin Hoffmann |
| author_sort | Lisa Schmitt |
| collection | DOAJ |
| description | We present the design, fabrication, and characterization of a MEMS-based 3-bit Digital-to-Analog Converter (DAC) that allows the generation of large displacements. The DAC consists of electrostatic bending-plate actuators that are connected to a mechanical amplifier (mechAMP), enabling the amplification of the DAC output displacement. Based on a parallel binary-encoded voltage signal, the output displacement of the system can be controlled in an arbitrary order. Considering the system design, we present a simplified analytic model, which was confirmed by FE simulation results. The fabricated systems showed a total stroke of approx. 149.5 ± 0.3 µm and a linear stepwise displacement of 3 bit correlated to 2<sup>3</sup> ≙ eight defined positions at a control voltage of 60 V. The minimum switching time between two input binary states is 0.1 ms. We present the experimental characterization of the system and the DAC and derive the influence of the mechAMP on the functionality of the DAC. Furthermore, the resonant behavior and the switching speed of the system are analyzed. By changing the electrode activation sequence, 27 defined positions are achieved upgrading the 3-bit systems into a 3-tri-state (3<sup>3</sup>) system. |
| first_indexed | 2024-03-10T09:06:36Z |
| format | Article |
| id | doaj.art-c2dcfb95d3a44a4c9d71ede43e07983d |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-10T09:06:36Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-c2dcfb95d3a44a4c9d71ede43e07983d2023-11-22T06:21:13ZengMDPI AGActuators2076-08252021-08-0110818210.3390/act100801823-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large DisplacementsLisa Schmitt0Philip Schmitt1Martin Hoffmann2Faculty of Electrical Engineering and Information Technology, Ruhr-University Bochum (RUB), 44801 Bochum, GermanyFaculty of Electrical Engineering and Information Technology, Ruhr-University Bochum (RUB), 44801 Bochum, GermanyFaculty of Electrical Engineering and Information Technology, Ruhr-University Bochum (RUB), 44801 Bochum, GermanyWe present the design, fabrication, and characterization of a MEMS-based 3-bit Digital-to-Analog Converter (DAC) that allows the generation of large displacements. The DAC consists of electrostatic bending-plate actuators that are connected to a mechanical amplifier (mechAMP), enabling the amplification of the DAC output displacement. Based on a parallel binary-encoded voltage signal, the output displacement of the system can be controlled in an arbitrary order. Considering the system design, we present a simplified analytic model, which was confirmed by FE simulation results. The fabricated systems showed a total stroke of approx. 149.5 ± 0.3 µm and a linear stepwise displacement of 3 bit correlated to 2<sup>3</sup> ≙ eight defined positions at a control voltage of 60 V. The minimum switching time between two input binary states is 0.1 ms. We present the experimental characterization of the system and the DAC and derive the influence of the mechAMP on the functionality of the DAC. Furthermore, the resonant behavior and the switching speed of the system are analyzed. By changing the electrode activation sequence, 27 defined positions are achieved upgrading the 3-bit systems into a 3-tri-state (3<sup>3</sup>) system.https://www.mdpi.com/2076-0825/10/8/182digital-to-analog converterDAClarge displacementselectrostatic bending-plate actuatormechanical amplifiermechAMP |
| spellingShingle | Lisa Schmitt Philip Schmitt Martin Hoffmann 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements Actuators digital-to-analog converter DAC large displacements electrostatic bending-plate actuator mechanical amplifier mechAMP |
| title | 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements |
| title_full | 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements |
| title_fullStr | 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements |
| title_full_unstemmed | 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements |
| title_short | 3-Bit Digital-to-Analog Converter with Mechanical Amplifier for Binary Encoded Large Displacements |
| title_sort | 3 bit digital to analog converter with mechanical amplifier for binary encoded large displacements |
| topic | digital-to-analog converter DAC large displacements electrostatic bending-plate actuator mechanical amplifier mechAMP |
| url | https://www.mdpi.com/2076-0825/10/8/182 |
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