A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth
The tail rotor of a helicopter, a crucial component, traditionally relies on a complex drive mode involving reducers and transmission gears. This conventional setup, with its lengthy transmission chain and numerous components, hinders miniaturization efforts. In response to this challenge, our paper...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/15/1/47 |
| _version_ | 1827371424923254784 |
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| author | Die Fang Zhiyi Wen Zhixin Geng Xiaopin Hu Leon Kaswango Jia Cao Xiaoniu Li Dawei Wu |
| author_facet | Die Fang Zhiyi Wen Zhixin Geng Xiaopin Hu Leon Kaswango Jia Cao Xiaoniu Li Dawei Wu |
| author_sort | Die Fang |
| collection | DOAJ |
| description | The tail rotor of a helicopter, a crucial component, traditionally relies on a complex drive mode involving reducers and transmission gears. This conventional setup, with its lengthy transmission chain and numerous components, hinders miniaturization efforts. In response to this challenge, our paper presents a novel piezoelectric drive approach. Our objective was to suggest an innovative design capable of minimizing the components involved in the tail rotor drive. This design can be adjusted in size according to specific requirements and is effective up to a specified speed. Moreover, it facilitates the process of miniaturization and integration. The piezoelectric actuator’s stator comprises an ultrasonic amplitude transformer, a ring, and three drive teeth. Utilizing the rod-like structure of the tail brace, the actuator is simplified by adhering ceramic sheets to it. The rotary piezoelectric actuator combines the first longitudinal mode of a rod with torus bending modes. The drive teeth then amplify the ring’s displacement, facilitating rotor rotation. The resonant frequency and modal shape of the actuator were determined using the finite element method. Furthermore, an investigation was conducted to analyze the influence of the drive teeth positioning on the motion trajectory at the contact point. Theoretically, we infer that the declination angle of the drive tooth is a crucial parameter for achieving high speeds. To test our idea, we built three prototype stators with different drive tooth declination angles. Our actuator stands out for its cost-effectiveness, structural simplicity, compatibility with harmonic signals, and ease of miniaturization. It can be considered for the drive of the tail rotor of a microhelicopter. |
| first_indexed | 2024-03-08T10:40:11Z |
| format | Article |
| id | doaj.art-340ef8574a0f496ab273e0a6c14f0e95 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-08T10:40:11Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-340ef8574a0f496ab273e0a6c14f0e952024-01-26T17:43:23ZengMDPI AGMicromachines2072-666X2023-12-011514710.3390/mi15010047A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact TeethDie Fang0Zhiyi Wen1Zhixin Geng2Xiaopin Hu3Leon Kaswango4Jia Cao5Xiaoniu Li6Dawei Wu7State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaState Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, No. 29 Yudao Street, Nanjing 210016, ChinaThe tail rotor of a helicopter, a crucial component, traditionally relies on a complex drive mode involving reducers and transmission gears. This conventional setup, with its lengthy transmission chain and numerous components, hinders miniaturization efforts. In response to this challenge, our paper presents a novel piezoelectric drive approach. Our objective was to suggest an innovative design capable of minimizing the components involved in the tail rotor drive. This design can be adjusted in size according to specific requirements and is effective up to a specified speed. Moreover, it facilitates the process of miniaturization and integration. The piezoelectric actuator’s stator comprises an ultrasonic amplitude transformer, a ring, and three drive teeth. Utilizing the rod-like structure of the tail brace, the actuator is simplified by adhering ceramic sheets to it. The rotary piezoelectric actuator combines the first longitudinal mode of a rod with torus bending modes. The drive teeth then amplify the ring’s displacement, facilitating rotor rotation. The resonant frequency and modal shape of the actuator were determined using the finite element method. Furthermore, an investigation was conducted to analyze the influence of the drive teeth positioning on the motion trajectory at the contact point. Theoretically, we infer that the declination angle of the drive tooth is a crucial parameter for achieving high speeds. To test our idea, we built three prototype stators with different drive tooth declination angles. Our actuator stands out for its cost-effectiveness, structural simplicity, compatibility with harmonic signals, and ease of miniaturization. It can be considered for the drive of the tail rotor of a microhelicopter.https://www.mdpi.com/2072-666X/15/1/47helicopter tail rotor drivepiezoelectric actuatorstructural and functional integrationdrive teethsingle-phase signal |
| spellingShingle | Die Fang Zhiyi Wen Zhixin Geng Xiaopin Hu Leon Kaswango Jia Cao Xiaoniu Li Dawei Wu A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth Micromachines helicopter tail rotor drive piezoelectric actuator structural and functional integration drive teeth single-phase signal |
| title | A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth |
| title_full | A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth |
| title_fullStr | A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth |
| title_full_unstemmed | A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth |
| title_short | A Single Oscillator-Excited Piezoelectric Actuator with Internal Contact Teeth |
| title_sort | single oscillator excited piezoelectric actuator with internal contact teeth |
| topic | helicopter tail rotor drive piezoelectric actuator structural and functional integration drive teeth single-phase signal |
| url | https://www.mdpi.com/2072-666X/15/1/47 |
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