Undersampled Blade Tip-Timing Vibration Reconstruction under Rotating Speed Fluctuation: Uniform and Nonuniform Sensor Configurations
المؤلفون المشاركون
He, Jing
Chen, Zhongsheng
Zhan, Chi
المصدر
العدد
المجلد 2019، العدد 2019 (31 ديسمبر/كانون الأول 2019)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2019-08-14
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
Blade tip-timing (BTT) is a promising method of online monitoring rotating blade vibrations.
Since BTT-based vibration signals are typically undersampled, how to reconstruct characteristic vibrations from BTT signals is a big challenge.
Existing reconstruction methods are mainly based on the assumption of constant rotation speeds.
However, rotating speed fluctuation is inevitable in many engineering applications.
In this case, the BTT sampling process should be nonuniform, which will cause existing reconstruction methods to be unavailable.
In order to solve this problem, this paper proposes a new reconstruction method based on nonlinear time transformation (NTT).
Firstly, the effects of rotating speed fluctuation on BTT vibration reconstruction are analyzed.
Next, the NTT of BTT sampling times under rotating speed fluctuation is presented.
Then, two NTT-based reconstruction algorithms are derived for uniform and nonuniform BTT sensor configurations, respectively.
Also several evaluation metrics of BTT vibration reconstruction under rotating speed fluctuation are defined.
Finally, numerical simulations are done to verify the proposed algorithms.
The results testify that the proposed NTT-based reconstruction method can reduce effectively the influence of rotating speed fluctuation and decrease the reconstruction error.
In addition, rotating speed fluctuation has more bad effects on the reconstruction method under nonuniform sensor configuration than under uniform sensor configuration.
For nonuniform BTT signal reconstruction under rotating speed fluctuation, more attentions should be paid on selecting proper angles between BTT sensors.
In summary, the proposed method will benefit for detecting early blade damages by reducing frequency aliasing.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Chen, Zhongsheng& He, Jing& Zhan, Chi. 2019. Undersampled Blade Tip-Timing Vibration Reconstruction under Rotating Speed Fluctuation: Uniform and Nonuniform Sensor Configurations. Shock and Vibration،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211567
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Chen, Zhongsheng…[et al.]. Undersampled Blade Tip-Timing Vibration Reconstruction under Rotating Speed Fluctuation: Uniform and Nonuniform Sensor Configurations. Shock and Vibration No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1211567
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Chen, Zhongsheng& He, Jing& Zhan, Chi. Undersampled Blade Tip-Timing Vibration Reconstruction under Rotating Speed Fluctuation: Uniform and Nonuniform Sensor Configurations. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1211567
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1211567
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر