Unmanned aerial vehicles (UAVs) are widely used in many fields, including agriculture and industry. Touchdown of a UAV without tipping over is a crucial but challenging issue owing to disturbances and uncertainties in the landing phase. In particular, when a breakdown occurs in a UAV system and the UAV free falls, sensors can be destroyed or the integrity of the UAV can be compromised. Therefore, developing an emergency landing system that can suppress rebound after free falling and preserve the integrity of UAVs is necessary. This paper proposes an adaptive shock response mechanism as a safe and robust emergency landing system for UAVs. A spring-damper system combined with a plastic deformation part serves as this emergency landing system to absorb and mitigate the impact during the landing phase to avoid tipping over of a UAV by reducing the rebound height. A release system that unlocks the plastic deformation part when the landing height is sufficiently high is proposed. Numerical simulations are conducted to evaluate the performance of the proposed emergency landing system, which is compared with those of two other mechanisms. The results reveal that the proposed method can deliver satisfactory rebound-reducing performance and high robustness against variations in the UAV weight and falling height. Additionally, the effectiveness of the proposed mechanism is experimentally validated using an equivalent model.
{"title":"Fundamental Study on Adaptive Shock Response Control for Emergency Landing of UAVs and Its Experimental Investigation","authors":"Pengcheng Li, Ryuki Sato, Masaki Hasegawa, Susumu Hara","doi":"10.1541/ieejjia.23004526","DOIUrl":"https://doi.org/10.1541/ieejjia.23004526","url":null,"abstract":"Unmanned aerial vehicles (UAVs) are widely used in many fields, including agriculture and industry. Touchdown of a UAV without tipping over is a crucial but challenging issue owing to disturbances and uncertainties in the landing phase. In particular, when a breakdown occurs in a UAV system and the UAV free falls, sensors can be destroyed or the integrity of the UAV can be compromised. Therefore, developing an emergency landing system that can suppress rebound after free falling and preserve the integrity of UAVs is necessary. This paper proposes an adaptive shock response mechanism as a safe and robust emergency landing system for UAVs. A spring-damper system combined with a plastic deformation part serves as this emergency landing system to absorb and mitigate the impact during the landing phase to avoid tipping over of a UAV by reducing the rebound height. A release system that unlocks the plastic deformation part when the landing height is sufficiently high is proposed. Numerical simulations are conducted to evaluate the performance of the proposed emergency landing system, which is compared with those of two other mechanisms. The results reveal that the proposed method can deliver satisfactory rebound-reducing performance and high robustness against variations in the UAV weight and falling height. Additionally, the effectiveness of the proposed mechanism is experimentally validated using an equivalent model.","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134890218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22000390
Thao Tran Phuong, Kiyoshi Ohishi, Y. Yokokura
{"title":"High-Performance Sensorless Force Control Using Superior Wideband and Periodicity-Cancellation Force Observer","authors":"Thao Tran Phuong, Kiyoshi Ohishi, Y. Yokokura","doi":"10.1541/ieejjia.22000390","DOIUrl":"https://doi.org/10.1541/ieejjia.22000390","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67664735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22004484
Masaki Takeuchi, S. Katsura
{"title":"Robust Velocity Control for Electromagnetic Friction Brake Based on Disturbance Observer","authors":"Masaki Takeuchi, S. Katsura","doi":"10.1541/ieejjia.22004484","DOIUrl":"https://doi.org/10.1541/ieejjia.22004484","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67665825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22004514
A. Hasegawa, T. Shimono, Shunya Takano, K. Masaki, Hideo Nakada, M. Nishie, Jun Hakamata
{"title":"Inhaler Motion Evaluation Via Weighted DP Matching","authors":"A. Hasegawa, T. Shimono, Shunya Takano, K. Masaki, Hideo Nakada, M. Nishie, Jun Hakamata","doi":"10.1541/ieejjia.22004514","DOIUrl":"https://doi.org/10.1541/ieejjia.22004514","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67665895","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22007452
Yuhan Wu, K. Shigematsu, Yasumichi Omoto, Yoshihiro Ikushima, J. Imaoka, Masayoshi Yamamoto
{"title":"Accurate Leakage Inductance Modeling Using an Artificial Neural Network Based on the Dowell Model","authors":"Yuhan Wu, K. Shigematsu, Yasumichi Omoto, Yoshihiro Ikushima, J. Imaoka, Masayoshi Yamamoto","doi":"10.1541/ieejjia.22007452","DOIUrl":"https://doi.org/10.1541/ieejjia.22007452","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67666939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22007992
N. Khuong, T. Shimono
{"title":"Modeling, Analysis, and Experimental Validation of Magnetic Geared Linear Motor","authors":"N. Khuong, T. Shimono","doi":"10.1541/ieejjia.22007992","DOIUrl":"https://doi.org/10.1541/ieejjia.22007992","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67667551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22011214
T. Koga, T. Abe, Yoshitsugu Otomo, Masaki Yamamoto, M. Rosu
{"title":"Reduced Order Modeling of Half-Wave Rectified Brushless Synchronous Motor for Model-Based Design","authors":"T. Koga, T. Abe, Yoshitsugu Otomo, Masaki Yamamoto, M. Rosu","doi":"10.1541/ieejjia.22011214","DOIUrl":"https://doi.org/10.1541/ieejjia.22011214","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67668546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22012635
K. Takeuchi, S. Sakaino, T. Tsuji
{"title":"Motion Generation Based on Contact State Estimation Using Two-stage Clustering","authors":"K. Takeuchi, S. Sakaino, T. Tsuji","doi":"10.1541/ieejjia.22012635","DOIUrl":"https://doi.org/10.1541/ieejjia.22012635","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67668670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.23000763
Yusuke Tsuji, D. Yashiro, Yuki Kato, Shinichiro Bando, K. Yubai, S. Komada
{"title":"Design of a Thrust Controller for Propeller Driven Systems Operating at Multiple Wind Velocities and Propeller Angular Velocities","authors":"Yusuke Tsuji, D. Yashiro, Yuki Kato, Shinichiro Bando, K. Yubai, S. Komada","doi":"10.1541/ieejjia.23000763","DOIUrl":"https://doi.org/10.1541/ieejjia.23000763","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67669027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1541/ieejjia.22003267
S. Hirayama, S. Takagi
{"title":"Evaluation of DC Excitation of External-Rotor-Segment-Type SRM for Power Generation","authors":"S. Hirayama, S. Takagi","doi":"10.1541/ieejjia.22003267","DOIUrl":"https://doi.org/10.1541/ieejjia.22003267","url":null,"abstract":"","PeriodicalId":45552,"journal":{"name":"IEEJ Journal of Industry Applications","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67664845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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