Browsing by Author "Kar, H"

Now showing 1 - 8 of 8

Citation - WoS: 49
Citation - Scopus: 54
Elimination of Overflow Oscillations in Digital Filters Employing Saturation Arithmetic
(Academic Press inc Elsevier Science, 2005) Kar, H; Singh, V
A criterion for the nonexistence of overflow oscillations in a class of digital filters employing saturation arithmetic is presented. The criterion is based on a novel characterization of the saturation nonlinearity (namely, the 'reduced sector' characterization) and, hence, is quite distinct from previously reported criteria. (c) 2005 Elsevier Inc. All rights reserved.
Citation - WoS: 55
Elimination of Overflow Oscillations in Fixed-Point State-Space Digital Filters With Saturation Arithmetic: an Lmi Approach
(Ieee-inst Electrical Electronics Engineers inc, 2004) Kar, H; Singh, V
A novel, linear-matrix inequality (LMI) based, criterion for the nonexistence of overflow oscillations in fixed-point state-space digital filter employing saturation arithmetic is presented. The criterion is based on a unique characterization (as prevailing in the filter under consideration) of the saturation nonlinearities, namely, an "effective" reduction of the sector.
Citation - WoS: 63
Citation - Scopus: 98
Improved Routh-Pade Approximants: a Computer-Aided Approach
(Ieee-inst Electrical Electronics Engineers inc, 2004) Singh, V; Chandra, D; Kar, H
A geometric programming based computer-aided method to derive a reduced order (rth-order) approximant for a given (stable) SISO linear continuous-time system is presented. In this method, stability and the first r time moments/Markov parameters are preserved as well as the errors between a set of subsequent time moments/Markov parameters of the system and those of the model are minimized.
Citation - WoS: 14
Citation - Scopus: 18
Optimal Routh Approximants Through Integral Squared Error Minimisation: Computer-Aided Approach
(inst Engineering Technology-iet, 2004) Singh, V; Chandra, D; Kar, H
A computer-aided method for obtaining a reduced-order approximant of a given (stable) single-input single-output system based on the minimisation of integral squared error (ISE) pertaining to a unit-step input is presented. Both the numerator and denominator coefficients of the model are treated as free parameters in the process of optimisation. The method has a built-in stability-preserving feature. The problem of formulating the ISE is circumvented by introducing a set of equality constraints.
Citation - WoS: 59
Citation - Scopus: 66
Robust Stability of 2-D Discrete Systems Described by the Fornasini-Marchesini Second Model Employing Quantization/Overflow Nonlinearities
(Ieee-inst Electrical Electronics Engineers inc, 2004) Kar, H; Singh, V
New criteria for the global asymptotic stability of the uncertain two-dimensional (2-D) discrete systems described by the Fornasini-Marchesini second local state-space model under various combinations of overflow and quantization nonlinearities are established. Sufficient conditions for the uncertain 2-D discrete systems to be free of overflow oscillations under a generalized overflow arithmetic are presented.
Citation - WoS: 29
Citation - Scopus: 32
Stability Analysis of 2-D Digital Filters With Saturation Arithmetic: an Lmi Approach
(Ieee-inst Electrical Electronics Engineers inc, 2005) Kar, H; Singh, V
An improved LMI-based criterion for the nonexistence of overflow oscillations in two-dimensional (2-D) digital filters described by the Roesser model employing saturation arithmetic is presented. The criterion makes use of the structural properties (as prevailing in the system under consideration) of the saturation nonlinearities in a greater detail than the usual sector restriction [0, 1].
Citation - WoS: 34
Citation - Scopus: 42
Stability Analysis of Discrete-Time Systems in a State-Space Realisation With Partial State Saturation Nonlinearities
(Iee-inst Elec Eng, 2003) Kar, H; Singh, V
A criterion for the global asymptotic stability of discrete-time systems in a state-space realisation with partial state saturation nonlinearities is presented. The criterion is compared with a previously reported criterion.
Citation - WoS: 58
Citation - Scopus: 67
Stability of 2-D Systems Described by the Fornasini-Marchesini First Model
(Ieee-inst Electrical Electronics Engineers inc, 2003) Kar, H; Singh, V
A sufficient condition for the stability of linear two-dimensional (2-D) systems described by the Fornasini-Marchesini (FM) first model is presented. The condition is compared with previously reported conditions.