نتایج جستجو برای: broken bars fault
تعداد نتایج: 100001 فیلتر نتایج به سال:
Abstract: This article presents a fault detection scheme for the case of a broken bar occurrence in a three phase induction motor. The proposed scheme relies on Set Membership Identification (SMI) and novel proposed boundary violation rules for the identified motor’s parameters. The model of the three phase induction motor is being transformed into an equivalent two phase model, described in th...
سابقه و هدف: آکاتژیا یکی از عوارض شایع داروهای آنتی سایکوتیک می باشد. اختلاف نظر در مورد معیارهای تشخیصی این عارضه و دشواری تشخیص افتراقی آن با اضطراب و بی قراری ناشی از بیماری زمینه ای موجب گردیده تا گزارشات در مورد میزان شیوع از 5/12 تا 75% متفاوت باشد. مطالعه حاضر با هدف بررسی فراوانی آکاتژیا به وسیله دو روش تشخیص بالینی و استفاده از bars صورت گرفته است. مواد و روش ها: مطالعه از نوع توصیفی– ...
Twelve three-component strong-motion displacement records are modeled for the 1979 Imperial Valley earthquake to recover the distribution of slip on the lmperral fault plane. The final model, for which point source responses are calculated by a discrete wavenumber /finite element technique, uses a structure with gradients in material properties rather than layers. The effects of a velocity grad...
This is a draft of a chapter for a book, Modification, in preparation for the Cambridge University Press series Key Topics in Semantics and Pragmatics. The full manuscript is also available as a single document on my website, as are some additional chapters. The book is something between a textbook for people who already have a basic background in semantics and a survey of work in the area. For...
In this paper, a fault detection and diagnosis approach adopted for an input-output feedback linearization (IOFL) control of induction motor (IM) drive is proposed. This has been employed to detect identify the simple mixed broken rotor bars static air-gap eccentricity faults right from start its operation by utilizing advanced techniques. Therefore, two techniques are applied: model-based stra...
In this paper, we develop a new method for Wheeled Mobile Robot (WMR) fault detection. Specifically, we develop kinematic and dynamic models of the WMR in the presence of faults such as a change in the wheel radius (e.g., deformation, broken spoke, flat tire) or general kinematic disturbances that model slipping or skidding faults. Utilizing the WMR models, we employ a torque filtering techniqu...
Protective relays work in concert with sensing and control devices to accomplish their function. Under normal power system operation, a protective relay remains idle and serves no active function. But when fault or undesirable condition arrives Relay must be operated and function correctly. A Power System consists of various electrical components like Generator, transformers, transmission l...
Induction motors are indispensable, robust, and reliable machines for industry; however, as with any machine, they susceptible to diverse faults. Among the faults that a motor can suffer, broken rotor bars (BRBs) have become one of most studied ones because under this fault condition continue operating apparent normality, yet severity quickly increase and, consequently, generate whole collapse ...
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