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The paper presents a comparison between three different techniques for simultaneously estimating the speed, position and rotor flux modulus of an induction motor, which is used in a sensorless vector control system. The comparison highlights the dynamic performances, as well as the stability of the obervers in the area of low speeds. Dynamic performances testing is done by simulation using the Matlab-Simulink program. [ABSTRACT FROM AUTHOR]

The article presents the parallel mathematical model of the induction motor in which the stator iron core losses are modeled taking into account the core loss resistance and the eddy currents leakage inductance, in series connected in the base loss branch of the equivalent circuit of the motor. The induction motor simulation program is made in Matlab-Simulink and is based on the use of an S-Function block. [ABSTRACT FROM AUTHOR]

In this article presents a new gain matrix of the rotor flux Luenberger observer obtained based on the rotating method of the eigenvalues. In order to determine the gain matrix of the Luenberger observer, the mathematical model of the induction motor with iron loss, is used. The Luenberger observer estimates the position and modulus of the rotor flux space vector. The validation of the new gain matrix is done by numerical simulation in Matlab-Simulink. [ABSTRACT FROM AUTHOR]

The article presents the analysis by numerical simulation in Matlab- Simulink of the rotor's flux Luenberger observer assembly coupled with a Peng speed observer. The proposed estimator is use in sensorless vector systems of induction motors. [ABSTRACT FROM AUTHOR]

Copyright of Industria Textila is the property of Institutul National de Cercetare-Dezvoltare pentru Textile si Pielarie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industria Textila is the property of Institutul National de Cercetare-Dezvoltare pentru Textile si Pielarie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industria Textila is the property of Institutul National de Cercetare-Dezvoltare pentru Textile si Pielarie and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The article presents a simple solution for estimating the electrical and mechanical parameters of an induction motor. The estimation methods of induction motor parameters are tested by simulation in Matlab-Simulink. [ABSTRACT FROM AUTHOR]

The article presents a compensation solution based on the rotor resistance of the extended Gopinath observer used in the simultaneous estimation of the rotor speed and position and mode of the rotor flux phasor. The rotor resistance is estimated based on a relationship deducted from the mathematical model of the induction motor. The dynamic performances of the extended Gopinath observer are highlighted by simulation in Matlab-Simulink. [ABSTRACT FROM AUTHOR]

In this paper is presented the procedure of using Matlab-Simulink's SFunction blocks for simulating the Luenberger observer, which has the role of estimating the rotor flux of an induction machine with squirrel-cage rotor. In order to analyze the dynamic performance of the Luenberger estimator, both the effects of electric parameters variations and the effects of noise measurements are highlighted. [ABSTRACT FROM AUTHOR]

In this paper is presented the procedure of using Matlab-Simulink's S-Function blocks for simulating the mathematical mode of the induction motors with the squirrel-cage rotor, in which the iron losses are not negligible. [ABSTRACT FROM AUTHOR]

This paper presents a method of simultaneous estimation of speed and rotor resistance of an induction motor, from a sensorless vector control system. The simultaneous estimation of the speed, rotor flux and of rotor resistance is done by using an adaptive estimator, called the Extended Gopinath Observer (EGO). To ensure the persistent excitation condition, in the vector control system, over the rotor flux reference, we overlay a sine wave signal of low frequency and amplitude. The new method of simultaneous estimation of the speed, rotor flux and of the rotor resistance, is validated through simulation. [ABSTRACT FROM AUTHOR]

Our goal was to developed, implementated and practical experimentated an XYZ position control system for a ABB industrial robot. The electrical motors used are induction squirrel cage motors. The position adjustment system is based on a vectorial control, sensor-less, of the mechanical speed of the induction motor. The speed estimation and components of the rotor flux is made using the Luenberger Extended Estimator. The design of the adaptation component is based on V.M. Popov hypersensitivity. In the final the position adjustment of the ABB robot is analyzed using Matlab - Simulink. [ABSTRACT FROM AUTHOR]

The paper presents a model of economic adjustment Romania's GDP using econometric model which has the budgetary input and output as Romania's GDP. Adjustment shall be based on a square linear regulator by type discrete. [ABSTRACT FROM AUTHOR]

The purpose of this paper is to present a new sysntesis of the estimator Gopinath extended used in vectorial control of the position of GMF360 industrial robot. The extended Gopinath observer proposed in this paper is designated to estimate the rotor flux components and the rotor resistance of the induction motor. This work presents a new strategy to assign the Gopinath matrix elements of the flux estimator in the EGO observer. The studied control system is based on the direct rotor flux orientation method (DFOC). [ABSTRACT FROM AUTHOR]

The purpose of this paper is to present the extended KANBANS system that are utilized in the modeling and simulation of CIM systems. [ABSTRACT FROM AUTHOR]