Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest
Centrifugal force is often used as an exciting force for fruit vibration harvest. However, the magnitude of centrifugal force varies quadratically with angular velocity. When the frequency of excitation force remains constant, the amplitude of vibration force cannot be freely adjusted. This study ac...
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| Language: | English |
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MDPI AG
2024-10-01
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| Series: | Agriculture |
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| Online Access: | https://www.mdpi.com/2077-0472/14/11/1858 |
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| author | Haobo Jiao Juming Luo Lihong Wang Aifei Tang Chengsong Li |
| author_facet | Haobo Jiao Juming Luo Lihong Wang Aifei Tang Chengsong Li |
| author_sort | Haobo Jiao |
| collection | DOAJ |
| description | Centrifugal force is often used as an exciting force for fruit vibration harvest. However, the magnitude of centrifugal force varies quadratically with angular velocity. When the frequency of excitation force remains constant, the amplitude of vibration force cannot be freely adjusted. This study achieves decoupling of the amplitude and frequency of centrifugal force by varying the eccentricity of the eccentric block. Different combinations of eccentric blocks with varying quantities and parameters enable the creation of different types of centrifugal force amplitude–frequency decoupling exciters. Both the amplitude and frequency of excitation force produced by these exciters can be freely adjusted. Furthermore, a physical prototype of a symmetrical dual eccentric block exciter with centrifugal force amplitude–frequency decoupling is developed and tested. It is found that when the exciter frequency or excitation force amplitude remains constant, the vibration acceleration amplitude generated by the exciter changes by adjusting the eccentricity of the eccentric blocks. As the eccentricity of the eccentric blocks decreases, their moment of inertia and kinetic energy decrease. Utilizing mechanisms to adjust the eccentricity of the eccentric block’s center of mass to the rotation axis achieves the dynamic adjustment of the size and frequency of centrifugal force. |
| format | Article |
| id | doaj-art-ccff745478a64b2abda77b57280d4a21 |
| institution | OA Journals |
| issn | 2077-0472 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Agriculture |
| spelling | doaj-art-ccff745478a64b2abda77b57280d4a212025-08-20T02:08:04ZengMDPI AGAgriculture2077-04722024-10-011411185810.3390/agriculture14111858Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration HarvestHaobo Jiao0Juming Luo1Lihong Wang2Aifei Tang3Chengsong Li4College of Engineering and Technology, Southwest University, Chongqing 400715, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400715, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400715, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400715, ChinaCollege of Engineering and Technology, Southwest University, Chongqing 400715, ChinaCentrifugal force is often used as an exciting force for fruit vibration harvest. However, the magnitude of centrifugal force varies quadratically with angular velocity. When the frequency of excitation force remains constant, the amplitude of vibration force cannot be freely adjusted. This study achieves decoupling of the amplitude and frequency of centrifugal force by varying the eccentricity of the eccentric block. Different combinations of eccentric blocks with varying quantities and parameters enable the creation of different types of centrifugal force amplitude–frequency decoupling exciters. Both the amplitude and frequency of excitation force produced by these exciters can be freely adjusted. Furthermore, a physical prototype of a symmetrical dual eccentric block exciter with centrifugal force amplitude–frequency decoupling is developed and tested. It is found that when the exciter frequency or excitation force amplitude remains constant, the vibration acceleration amplitude generated by the exciter changes by adjusting the eccentricity of the eccentric blocks. As the eccentricity of the eccentric blocks decreases, their moment of inertia and kinetic energy decrease. Utilizing mechanisms to adjust the eccentricity of the eccentric block’s center of mass to the rotation axis achieves the dynamic adjustment of the size and frequency of centrifugal force.https://www.mdpi.com/2077-0472/14/11/1858centrifugal forceeccentric blockexcitersvibration harvestexciting force |
| spellingShingle | Haobo Jiao Juming Luo Lihong Wang Aifei Tang Chengsong Li Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest Agriculture centrifugal force eccentric block exciters vibration harvest exciting force |
| title | Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest |
| title_full | Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest |
| title_fullStr | Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest |
| title_full_unstemmed | Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest |
| title_short | Mechanism of Centrifugal Force Amplitude–Frequency Decoupling Exciters for Fruit Tree Vibration Harvest |
| title_sort | mechanism of centrifugal force amplitude frequency decoupling exciters for fruit tree vibration harvest |
| topic | centrifugal force eccentric block exciters vibration harvest exciting force |
| url | https://www.mdpi.com/2077-0472/14/11/1858 |
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