A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions
It is well known that the rheological properties of magnetorheological (MR) material change under a magnetic field. So far, most works on MR materials have been oriented toward actuating characteristics instead of sensing functions. In this work, to realize dynamic tactile motion, a spherical MR str...
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| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/22/9035 |
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| author | Yu-Jin Park Bo-Gyu Kim Eun-Sang Lee Seung-Bok Choi |
| author_facet | Yu-Jin Park Bo-Gyu Kim Eun-Sang Lee Seung-Bok Choi |
| author_sort | Yu-Jin Park |
| collection | DOAJ |
| description | It is well known that the rheological properties of magnetorheological (MR) material change under a magnetic field. So far, most works on MR materials have been oriented toward actuating characteristics instead of sensing functions. In this work, to realize dynamic tactile motion, a spherical MR structure was designed as a sensor, incorporating a magnetic circuit core to provide maximum dynamic motion. After manufacturing a prototype (sample), a sinusoidal magnetic field of varying exciting frequency and magnitude was applied to the sample, and the dynamic contraction and relaxation motion depending on the exciting magnetic field was observed. Among the test results, when 10% deformation occurred, the instantaneous force generated was from 2.8 N to 8.8 N, and the force when relaxed was from 1.2 N to 3.5 N. It is also shown that the repulsive force within this range can be implemented using an acceptable input current. The special tactile sensing structure proposed in this work can be used as a sensor to measure the field-dependent viscoelastic properties of human tissues such as stomach, liver, and overall body. In addition, it could be usefully applied to robot surgery, because it can mimic the dynamic motions of various human organs under various surgical conditions. |
| first_indexed | 2024-03-09T16:28:14Z |
| format | Article |
| id | doaj.art-2debebbd23444dc7862c567296032c99 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T16:28:14Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-2debebbd23444dc7862c567296032c992023-11-24T15:05:05ZengMDPI AGSensors1424-82202023-11-012322903510.3390/s23229035A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation MotionsYu-Jin Park0Bo-Gyu Kim1Eun-Sang Lee2Seung-Bok Choi3Korea Initiative for Fostering University of Research & Innovation, Inha University, Incheon 21999, Republic of KoreaDepartment of Mechanical Engineering, The State University of New York, Korea (SUNY Korea), Incheon 21985, Republic of KoreaKorea Initiative for Fostering University of Research & Innovation, Inha University, Incheon 21999, Republic of KoreaDepartment of Mechanical Engineering, The State University of New York, Korea (SUNY Korea), Incheon 21985, Republic of KoreaIt is well known that the rheological properties of magnetorheological (MR) material change under a magnetic field. So far, most works on MR materials have been oriented toward actuating characteristics instead of sensing functions. In this work, to realize dynamic tactile motion, a spherical MR structure was designed as a sensor, incorporating a magnetic circuit core to provide maximum dynamic motion. After manufacturing a prototype (sample), a sinusoidal magnetic field of varying exciting frequency and magnitude was applied to the sample, and the dynamic contraction and relaxation motion depending on the exciting magnetic field was observed. Among the test results, when 10% deformation occurred, the instantaneous force generated was from 2.8 N to 8.8 N, and the force when relaxed was from 1.2 N to 3.5 N. It is also shown that the repulsive force within this range can be implemented using an acceptable input current. The special tactile sensing structure proposed in this work can be used as a sensor to measure the field-dependent viscoelastic properties of human tissues such as stomach, liver, and overall body. In addition, it could be usefully applied to robot surgery, because it can mimic the dynamic motions of various human organs under various surgical conditions.https://www.mdpi.com/1424-8220/23/22/9035magnetorheological fluidmagnetorheological elastomertactile devicedynamic motionmagnetic fieldexciting frequency |
| spellingShingle | Yu-Jin Park Bo-Gyu Kim Eun-Sang Lee Seung-Bok Choi A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions Sensors magnetorheological fluid magnetorheological elastomer tactile device dynamic motion magnetic field exciting frequency |
| title | A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions |
| title_full | A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions |
| title_fullStr | A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions |
| title_full_unstemmed | A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions |
| title_short | A Novel Tactile Sensing System Utilizing Magnetorheological Structures for Dynamic Contraction and Relaxation Motions |
| title_sort | novel tactile sensing system utilizing magnetorheological structures for dynamic contraction and relaxation motions |
| topic | magnetorheological fluid magnetorheological elastomer tactile device dynamic motion magnetic field exciting frequency |
| url | https://www.mdpi.com/1424-8220/23/22/9035 |
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