This paper deals with a model of a 3-bladed wind turbine and its identification. The linear, time-invariant state-space model has been developed at Fraunhofer IWES mainly for control engineering applications. Its parameters are obtained from an operational modal analysis carried out on a commercial 5MW turbine. The parameterised model is validated by comparison of estimated time series and meas...

Cross-modal representation learning learns a shared embedding between two or more modalities to improve performance in given task compared using only one of the modalities. from different data types – such as images and time-series (e.g., audio text data) requires deep metric loss that minimizes distance modality embeddings. In this paper, we propose use contrastive triplet loss, which uses pos...

Abstract: Modal analysis is a powerful technique for understanding the behavior and performance of structures. Modal analysis can be conducted via artificial excitation, e.g. shaker or instrument hammer excitation. Input force and output responses are measured. That is normally referred to as experimental modal analysis (EMA). EMA consists of three steps: data acquisition, system identificatio...

Copyright © 1994, AAAI. 0738-4602-1994 / $2.00 of theorem provers for nonstandard logics in AI systems. The logics considered included modal logics, many-valued logics, autoepistemic logics, conditional logics, argument-based defeasible reasoning, probabilistic logics, default logic, transaction logic, defeasible Prolog, and temporal logics. Some of the applications were reasoning about actions...

In traditional finite element based modal analysis of linear non-conservative structures, the modal shapes are determined solely based on stiffness and mass. Damping effects are included by implicitly assuming that the damping matrix can be diagonalized by the undamped modes. The approach gives real valued mode shapes and modal coordinates. While this framework is suitable for analysis of most ...

Stres kerja menjadi perhatian khusus yang telah berkembang di banyak perusahaan. Ini dapat berakibat kerugian bagi perusahaan bila tidak ditangani dengan benar. Karyawan memiliki tingkat stres tinggi dan berkepanjangan akan berniat meninggalkan karena modal psikologis, sosial manusia tangguh mampu menangani beban tuntutan pekerjaan. Tujuan dari studi ini adalah mengetahui keterkaitan antara sos...

The present study set out to investigate the effect of teaching substitution as a kind of grammatical cohesion on the true identification of confusing substitution elements with cohesive or non-cohesive roles in different contexts and also the production of modal, reporting and conditional contexts through clausal substitution acquaintance. To this end, the following procedures were taken. Firs...

An approximate numerical mthod is presented for analysis and determination of modal characteristics in straight, pretwisted non-unifom helicopter blades. The analysis considers the coupled flapwise bending (out of plane), chordwise bending (in plane), and torsion vibration of both rotating and non-rotating blades. The proposed method is based on the integral expansion of Green functions (struct...

the occurrence of chatter vibrations in boring operation has a great influence in improving workpiece dimensional accuracy, surface quality and production efficiency. in this paper instability analysis of machining process is presented by dynamic model of boring machine. this model, which consists of machine tool’s structure, is provided by finite element method and ansys software. the model is...