A new set of orthogonal functions and its application to the analysis of dynamic systems |
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Authors: | Anish Deb Anindita Dasgupta |
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Institution: | a Department of Applied Physics, Calcutta University, 92 A P C Road, Kolkata-700 009, India b Department of Electrical Engineering, B. E. College (Deemed University), Howrah-711 103, India |
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Abstract: | The present work proposes a complementary pair of orthogonal triangular function (TF) sets derived from the well-known block pulse function (BPF) set. The operational matrices for integration in TF domain have been computed and their relation with the BPF domain integral operational matrix is shown. It has been established with illustration that the TF domain technique is more accurate than the BPF domain technique as far as integration is concerned, and it provides with a piecewise linear solution.As a further study, the newly proposed sets have been applied to the analysis of dynamic systems to prove the fact that it introduces less mean integral squared error (MISE) than the staircase solution obtained from BPF domain analysis, without any extra computational burden. Finally, a detailed study of the representational error has been made to estimate the upper bound of the MISE for the TF approximation of a function f(t) of Lebesgue measure. |
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Keywords: | Orthogonal functions Triangular functions Operational matrices Dynamic systems Error analysis |
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