Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor
This study proposes a force plate with a planar spring and an eddy current displacement sensor to measure the ground reaction force (GRF) of a small insect and reveal its motion characteristics. The proposed force plate comprises a circular aluminum plate, four aluminum springs symmetrically connect...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Actuators |
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| Online Access: | https://www.mdpi.com/2076-0825/12/1/16 |
| _version_ | 1827623474872451072 |
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| author | Yuta Kawasaki Hidetoshi Takahashi |
| author_facet | Yuta Kawasaki Hidetoshi Takahashi |
| author_sort | Yuta Kawasaki |
| collection | DOAJ |
| description | This study proposes a force plate with a planar spring and an eddy current displacement sensor to measure the ground reaction force (GRF) of a small insect and reveal its motion characteristics. The proposed force plate comprises a circular aluminum plate, four aluminum springs symmetrically connected to the plate, and an eddy current displacement sensor under the plate. The diameter and thickness of the fabricated plate were 8 and 0.1 mm, respectively. The spring width was 0.4 mm. When a force is applied to the plate, the plate moves vertically downward. Then, an eddy current displacement sensor detects the plate displacement without contact. The applied force can be measured using Hooke’s law. The proposed force plate has the advantages of ease of fabrication and cost-effectiveness. The central displacement variation and resonant frequency of the designed springs were evaluated by simulation. Then, we calibrated the fabricated force plate to obtain the sensitivity variation and resonant frequency. The experimental results suggest that the proposed force plate can effectively measure the GRF of a small insect. |
| first_indexed | 2024-03-09T11:49:10Z |
| format | Article |
| id | doaj.art-1f3d13b1de5d44429618ecd7d276dc72 |
| institution | Directory Open Access Journal |
| issn | 2076-0825 |
| language | English |
| last_indexed | 2024-03-09T11:49:10Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Actuators |
| spelling | doaj.art-1f3d13b1de5d44429618ecd7d276dc722023-11-30T23:17:13ZengMDPI AGActuators2076-08252022-12-011211610.3390/act12010016Spiral Spring-Supported Force Plate with an External Eddy Current Displacement SensorYuta Kawasaki0Hidetoshi Takahashi1Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama 223-8522, JapanDepartment of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kouhoku-ku, Yokohama 223-8522, JapanThis study proposes a force plate with a planar spring and an eddy current displacement sensor to measure the ground reaction force (GRF) of a small insect and reveal its motion characteristics. The proposed force plate comprises a circular aluminum plate, four aluminum springs symmetrically connected to the plate, and an eddy current displacement sensor under the plate. The diameter and thickness of the fabricated plate were 8 and 0.1 mm, respectively. The spring width was 0.4 mm. When a force is applied to the plate, the plate moves vertically downward. Then, an eddy current displacement sensor detects the plate displacement without contact. The applied force can be measured using Hooke’s law. The proposed force plate has the advantages of ease of fabrication and cost-effectiveness. The central displacement variation and resonant frequency of the designed springs were evaluated by simulation. Then, we calibrated the fabricated force plate to obtain the sensitivity variation and resonant frequency. The experimental results suggest that the proposed force plate can effectively measure the GRF of a small insect.https://www.mdpi.com/2076-0825/12/1/16force plateeddy current sensorlaser machiningground reaction forcesmall insect |
| spellingShingle | Yuta Kawasaki Hidetoshi Takahashi Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor Actuators force plate eddy current sensor laser machining ground reaction force small insect |
| title | Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor |
| title_full | Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor |
| title_fullStr | Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor |
| title_full_unstemmed | Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor |
| title_short | Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor |
| title_sort | spiral spring supported force plate with an external eddy current displacement sensor |
| topic | force plate eddy current sensor laser machining ground reaction force small insect |
| url | https://www.mdpi.com/2076-0825/12/1/16 |
| work_keys_str_mv | AT yutakawasaki spiralspringsupportedforceplatewithanexternaleddycurrentdisplacementsensor AT hidetoshitakahashi spiralspringsupportedforceplatewithanexternaleddycurrentdisplacementsensor |