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The Vector Coherent State Method and Its Application to Problems of Higher Symmetries

The Vector Coherent State Method and Its Application to Problems of Higher Symmetries

Karl T. Hecht

Springer-Verlag Berlin and Heidelberg GmbH Co. K
2013
nidottu
These lectures review the recently developed vector coherent state method. The book is an excellent introduction to the field because of the many examples treated in detail, in particular those from nuclear and particle physics. These calculations will be welcomed by researchers and graduate students. The author reviews the concepts of coherent states of the Heisenberg algebra and shows then that the vector coherent state method maps the higher symmetry algebra into an n-dimensional harmonic oscillator algebra coupled with a simple intrinsic symmetry algebra. The formulation involves some vector (or analogous higher symmetry) coupling of the intrinsic algebra with the n-dimensional oscillator algebra, leading to matrix representations and Wigner coefficients of the higher symmetry algebra expressed in terms of simple calculable functions and recoupling coefficients for the simpler intrinsic algebra.
Dinosaurs Vector Coloring Book For Kids
Let Your Kids Creativity grow and learn dinosaur species with these Vector Dinosaur Coloring Pages This Amazing Coloring Book is perfect for the little ones who Love Dinosaurs. All Kids can Explore and have hours of fun in the wonderful world of dinosaurs by coloring these pages. Our vector dinosaur coloring book can help little ones to relax and also it can develop their attention to details and they will learn what many species of dinosaurs look like.Get This Perfect Gift for the little ones you love in your life This Vector Dinosaur Coloring Book Contains: - 28 Unique Coloring Pages- Single-sided pages, so colors won t bleed through the next artwork- Pages Suitable for markers, gel pens, coloring pencils, fine liners and water colors- Images with a complex and engaging design- Large size: 8,5x11 inches, professional quality designs
Indirect vector control of induction motor with hybrid controllers

Indirect vector control of induction motor with hybrid controllers

P Dinakara Prasad Reddy; Ch Devi Sree; J N Chandra Sekhar

SCHOLARS' PRESS
2021
pokkari
In this book implementation of unified intelligent controller methods for voltage controlled PWM driven three phase Induction Motor drive system has been developed and analyzed in detail. The classical approach of manipulating speed controllers for vector control of an induction motor creates many problems like instability, rise time and settling time during load disturbances. In this paper fuzzy plus PI and self tuning of PI plus fuzzy hybrid controllers are used. To decrease rise time and settling time these controllers are designed in Matlab/Simulink and used for a 5 HP, 3 Phase cage type Induction motor. Hybrid controllers perform well and gives better response when compared with classical controller. The simulation was carried out with the help of SIMULINK & MATLAB and the results were found to be in accordance with theory.