A new method to enhance the performance of multi radar tracking systems is presented in this paper. In parallel to an IMM model type tracker a second tracker estimates track heading and speed based upon differential measurements from multiple sensors. A differential measurement contains the differences between two subsequent measurements from one sensor. This new method accepts information from...

This paper presents a speed sensorless rotor flux estimation algorithm in a vector controlled induction motor drive. The proposed method is based on observing a newly defined state which replaces the unknown terms containing rotor flux and speed on right hand side of the state equation of the motor. A new mathematical model of the motor is derived after introducing the above mentioned sate. Rot...

in this paper a novel hybrid algorithm for harmonics estimation in power systems is proposed. the estimation of the harmonic components is a nonlinear problem due to the nonlinearity of phase of sinusoids in distorted waveforms. most researchers implemented nonlinear methods to extract the harmonic parameters. however, nonlinear methods for amplitude estimation increase time of convergence. hen...

The wind speed has a huge impact on the dynamic response of wind turbine. Because of this, many control algorithms use a measure of the wind speed to increase performance, e.g. by gain scheduling and feed forward. Unfortunately, no accurate measurement of the effective wind speed is online available from direct measurements, which means that it must be estimated in order to make such control me...

Speed estimation algorithm based on the relative RF estimates at the antennae of a self contained MIMO device is discussed. The algorithm gives average error of 5% for both high and low variable speeds. The scheme does not require a priori information about the wireless channel, so no large databases are needed. Its computational complexity is relatively low and techniques for increasing the pe...

In recent years there has been a great deal of attention paid by researchers in investigating ionic liquids (ILs) mainly due to the tremendous potential that ionic liquids have in reaction and separation technology. Sonic speed is an important thermodynamic property of ionic liquids (ILs) and always chosen as a source to determine other properties. A database for the sonic speed of pure ILs cre...

For speed sensorless induction motors under field-oriented control (FOC), where the motor speed and angle are not measured, the speed control tracking bandwidth is mainly limited by the convergence rate of the state estimator. Prevailing speed-sensorless induction motors suffer significant performance degradation from removing the encoder, which limits their applications to fields requiring low...

The performance of sensor-less controlled induction motor drive depends on the accuracy of the estimated speed. Conventional estimation techniques being mathematically complex require more execution time resulting in poor dynamic response. The nonlinear mapping capability and powerful learning algorithms of neural network provides a promising alternative for on-line speed estimation. The on-lin...

M. S. Zaky, M. Khater, H. Yasin, and S. S. Shokralla Electrical Engineering Dept., Faculty of Engineering, Minoufiya University, Shebin El-Kom, Egypt Address correspondence to Mohamed Shaban Zaky, Electrical Engineering Dept., Faculty of Engineering, Minoufiya University, Shebin El-Kom, Egypt. Tel.: 002-0482329988; fax: 002-0482235695 E-mail: [email protected] Abstract Induction motor drives w...