Scalable Bi-Directional SMA-Based Rotational Actuator
In industrial applications, rotatory motions and torques are often needed. State-of-the-art actuators are based on either combustion engines, electro-motors, hydraulic, or pneumatic machines. The main disadvantages are the construction space, the high weight, and a large amount of needed peripheral...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/8/3/60 |
| _version_ | 1818149834303995904 |
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| author | Rouven Britz Paul Motzki Stefan Seelecke |
| author_facet | Rouven Britz Paul Motzki Stefan Seelecke |
| author_sort | Rouven Britz |
| collection | DOAJ |
| description | In industrial applications, rotatory motions and torques are often needed. State-of-the-art actuators are based on either combustion engines, electro-motors, hydraulic, or pneumatic machines. The main disadvantages are the construction space, the high weight, and a large amount of needed peripheral devices. To overcome these limitations, compact and light-weight actuator systems can be built by using shape memory alloys (SMAs), which are known for their superior energy density. In this paper, the development of a scalable bi-directional rotational actuator based on SMA wires is presented. The scalability was based on a modular design, which allowed the actuator to be adapted to various application specifications by customizing the rotational angle and the output torque. On the mechanical side, each module enabled a small rotatory motion, which added up to the total angle of the actuator. The SMA wires were arranged in an agonist-antagonist configuration to provide active rotation in both directions. The presented prototype achieved a total rotation of 100°. The modularity of the mechanical concept is also reflected in the electronics, which is discussed in this paper as well. This consideration allows the electronics to be adapted to the mechanics with minimal changes. As a result, a prototype, including the presented mechanical and electronic design, is reported in this study. |
| first_indexed | 2024-12-11T13:13:20Z |
| format | Article |
| id | doaj.art-c50d3535c9f04846ac6028042654a323 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-12-11T13:13:20Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-c50d3535c9f04846ac6028042654a3232022-12-22T01:06:08ZengMDPI AGActuators2076-08252019-08-01836010.3390/act8030060act8030060Scalable Bi-Directional SMA-Based Rotational ActuatorRouven Britz0Paul Motzki1Stefan Seelecke2Department of Systems Engineering, Department of Materials Science & Engineering, Saarland University, 66123 Saarbrücken, GermanyCenter for Mechatronics and Automation Technologies (ZeMA), 66121 Saarbrücken, GermanyDepartment of Systems Engineering, Department of Materials Science & Engineering, Saarland University, 66123 Saarbrücken, GermanyIn industrial applications, rotatory motions and torques are often needed. State-of-the-art actuators are based on either combustion engines, electro-motors, hydraulic, or pneumatic machines. The main disadvantages are the construction space, the high weight, and a large amount of needed peripheral devices. To overcome these limitations, compact and light-weight actuator systems can be built by using shape memory alloys (SMAs), which are known for their superior energy density. In this paper, the development of a scalable bi-directional rotational actuator based on SMA wires is presented. The scalability was based on a modular design, which allowed the actuator to be adapted to various application specifications by customizing the rotational angle and the output torque. On the mechanical side, each module enabled a small rotatory motion, which added up to the total angle of the actuator. The SMA wires were arranged in an agonist-antagonist configuration to provide active rotation in both directions. The presented prototype achieved a total rotation of 100°. The modularity of the mechanical concept is also reflected in the electronics, which is discussed in this paper as well. This consideration allows the electronics to be adapted to the mechanics with minimal changes. As a result, a prototype, including the presented mechanical and electronic design, is reported in this study.https://www.mdpi.com/2076-0825/8/3/60SMAshape memory alloyrotational actuatorantagonistic system |
| spellingShingle | Rouven Britz Paul Motzki Stefan Seelecke Scalable Bi-Directional SMA-Based Rotational Actuator Actuators SMA shape memory alloy rotational actuator antagonistic system |
| title | Scalable Bi-Directional SMA-Based Rotational Actuator |
| title_full | Scalable Bi-Directional SMA-Based Rotational Actuator |
| title_fullStr | Scalable Bi-Directional SMA-Based Rotational Actuator |
| title_full_unstemmed | Scalable Bi-Directional SMA-Based Rotational Actuator |
| title_short | Scalable Bi-Directional SMA-Based Rotational Actuator |
| title_sort | scalable bi directional sma based rotational actuator |
| topic | SMA shape memory alloy rotational actuator antagonistic system |
| url | https://www.mdpi.com/2076-0825/8/3/60 |
| work_keys_str_mv | AT rouvenbritz scalablebidirectionalsmabasedrotationalactuator AT paulmotzki scalablebidirectionalsmabasedrotationalactuator AT stefanseelecke scalablebidirectionalsmabasedrotationalactuator |