This paper shows that if one designs an LQG system by combining the reduced order controlcontroller using the conventional technique of loop transfer ler and the high order therefore, it is quite recovery (LTR), then two frequency weighted controller reduction methods, the Enns' frequency weighted balanced that in truncation (Enns, 1984a, Ph.D. Thesis, Stanford University, problems, one should ...

The problem of output regulation of affine nonlinear systems with the relative degree not well defined by modified steepest descent control is studied. The modified steepest descent control is a dynamic feedback control which is generated by the trajectory following method. By assuming the system is minimum phase, output of the system can be regulated globally asymptotically.

We study the effect of quark and nuclear matter mixed phase on the radial oscillation modes of neutron stars. For this study we have considered recent models from two classes of equations of state namely the relativistic mean field theoretical models and models based on realistic nucleon-nucleon interactions incorporating relativistic corrections and three body nuclear interactions. E–mail :vkg...

This paper studies the generation of stable tmnsfer functions for which the real or imaginary part takes prescribed values at discrete uniformly spaced points on the unit circle. Formulas bounding the error between a parIicular interpolating function and any function consistent with the data are presented, which have the desirable property that the error goes to zero exponentially fast with the...

Musical theatre singing requires the use of two vocal registers in the female voice. The voice source and subglottal pressure Ps characteristics of these registers are analysed by inverse filtering. The relationship between Ps and closed quotient Qclosed, peak-to-peak pulse amplitude Up-t-p, maximum flow declination rate MFDR and the normalised amplitude quotient NAQ were examined. Ps was typic...

In generic Hamiltonian systems with a mixed phase space chaotic transport may be directed and ballistic rather than diffusive. We investigate one particular model showing this behaviour, namely a spatially periodic billiard chain in which electrons move under the influence of a perpendicular magnetic field. We analyze the phase-space structure and derive an explicit expression for the chaotic t...

The subambient heat capacities of three (SrO),(CuO), inter-oxide samples with Y = y = I: I = 7. y=l; and u=l. y=2, were measured as a part of an investigation into the chemical thermodynamics of the high-T, superconducting system (lanthanum + strontium + copper + oxygen). No anomalous contribution to the heat capacity was observed over the experimental region. The heat capacity of the Sr,,Cu,,O...

This paper deals with a discrete time repetitive control synthesis for non minimum phase plants. Two parts can be distinguished. The main design features of the repetitive controllers are discussed in the first part. More precisely one shows that one can realize two objectives; tracking with zero error and tracking with nonzero error. In the second part, a suitable plant model identification pr...

Use of a common-acoustical-pole and zero model is proposed for modeling head-related transfer functions (HRTF’s) for various directions of sound incidence. The HRTF’s are expressed using the common acoustical poles, which do not depend on the source directions, and the zeros, which do. The common acoustical poles are estimated as they are common to HRTF’s for various source directions; the esti...