Sunit Kumar Sen

Published: Mar 22, 2013 by International Journal of Advanced Computer Research
Authors: Aritra Sinha, Sunit Kumar Sen
Subjects: Engineering - Electrical

ABS: A novel method of generating a pseudorandom binary sequence (PRBS) test signal generator is presented. A traditional PRBS generator uses a linear feedback shift register which generates a single maximum length sequence pattern having a fixed period. In this paper, three shift registers with feedback connections are employed in which the preset inputs of the shift registers are changed only on completion of their length sequences. These preset inputs are changed by employing a counter, cont.

Published: Jun 01, 2011 by Measurement
Authors: S.K. Sen, T.K. Pan, P. Ghosal
Subjects: Engineering - Electrical

ABSTRUCT: A new lead wire compensation technique is presented for conventional four wire resistance temperature detectors (RTDs). Existing four wire resistance temperature detectors generally use bridge balance technique to achieve balance and unbalance bridge output is calibrated in terms of unknown temperature. Out of the four leads, two leads are connected to one arm of the bridge while the other two leads are connected to the opposite arm of the bridge, normally known as ratio arms. Cont...

Published: Jun 20, 2006 by Measurement
Authors: Sunit Kumar Sen
Subjects: Engineering - Electrical

ABS: A new lead wire compensation technique is presented for conventional two wire resistance temperature detectors (RTDs). Existing two wire resistance temperature detectors generally use bridge balance methods, where the two lead resistances introduce appreciable error in measurements due to environment temperature variations. The presented technique considerably reduces the effects of such lead resistances and can accommodate temperature variations that the lead wires may be subjected to...

Published: Aug 12, 2005 by Indian J. of Engg. and Materials Sciences
Authors: S K Sen
Subjects: Engineering - Electrical

ABSTRUCT: A novel psychrometric method for measurement of humidity of a process is proposed. The design of a psychrometer is a complex one due to simultaneous introduction of two variables at the same time, viz., the meter current is dependent on both the relative humidity and ambient temperature. The circuit design has been so made that the said current would depend only on the relative humidity of air and independent of temperature variations at the place of measurement. Cont...

Published: Dec 01, 1999 by Indian Journal of Engineering & Materials Sciences
Authors: A Deb, G Sarkar, S K Sen and A K Datta
Subjects: Engineering - Electrical

A new method of analysis of chopper fed DC series motor is presented using Walsh/block pulse domain operation transfer function technique. Output response of average speed and average current is obtained having no restriction on the variations of width, frequency and amplitude of the input wave.

Published: Feb 01, 1999 by Indian Journal of Engineering & Materials Sciences
Authors: A Deb, G Sarkar, M Bhattacharjee and S K Sen
Subjects: Engineering - Electrical

ABS: An operational technique using block pulse functions (BPF) for the analysis of control systems with sample-and-hold(S/H) is proposed. Using this technique, the output in the BPF domain is obtained by means of simple matrix multiplication. Thus, laborious algebraic manipulations associated with the z-transform technique are avoided. Also, the method needs no inverse transformation, generally associated with Laplace or z-transformation. The BPF operational matrix for differentiation D cont..

Published: Mar 01, 1998 by Journal of the Franklin Institute
Authors: A Deb, G Sarkar, Manabrata Bhattacharjee and S K Sen
Subjects: Engineering - Electrical

Abstruct: The present work searches for a suitable set of orthogonal functions for the analysis of control systems with (S/H). The search starts with the applicability of the well known block pulse function (BPF) set and uses an operational technique by defining a block pulse operational transfer function (BPOTF) to analyse a few control systems. The results obtained are found to be fairly accurate. But this method failed to distinguish between an input sampled system and (Cont..)

Published: Jan 01, 1997 by Journal of the Franklin Institute
Authors: A Deb, G Sarkar, M Bhattachatjee and S K Sen
Subjects: Engineering - Electrical

Abs : The present work makes use of the block pulse domain operational matrix for differentiation D1(m) to find out an operational transfer function. Analysis of simple control systems using this Block Pulse Operational Transfer Function (BPOTF) shows that the results are not so accurate when compared with the direct expansion of the exact solution in the BPF domain. To remove this defect, one shot operational matrices for repeated integration (OSOMRI) are obtained and these (cont...)

Published: Jan 01, 1996 by IETE Technical Review
Authors: G Sarkar, A Deb and S K Sen
Subjects: Engineering - Electrical

Abs: Microprocessor based sequence identifier for balanced multiphase systems

Published: Nov 01, 1995 by Proceedings IEE – Control Theory & Applications, vol. 143
Authors: A Deb, G Sarkar, M. Bhattacharjee and S K Sen
Subjects: Engineering - Electrical

Abs: The paper presents a computational technique through operational matrices using a set of mutually disjoint delta functions (DF) for the analysis of linear discrete control systems. Following a brief review of the well known block pulse functions (BPF), a new set of delta functions is viewed in the same light. This set is used to develop operational transfer functions in the delta function domain (DOTF) and employed for discrete system analysis which results in the same accuracy .. cont...