Showing papers on "Reciprocal published in 1971"

Equivalent Nonlinear Reciprocal Networks

Abstract: Necessary and sufficient conditions are derived for two nonlinear reciprocal locally controllable networks to be equivalent. The controllability definition is borrowed from a classical work of Caratheodory, whereas the representation of reciprocal networks is due to Brayton and M\bar{o}ser.

Reciprocal relationships in the linear optimal-control problem

Abstract: Concepts of generalised flux and thermodynamic forces, and particularly the Onsager?Casimir reciprocal relationships characterising the phenomenological equations for general irreversible-flow processes, are shown to exist analogously in the formulation of the linear optimal-control and estimation problems. Characteristics of the energy function used in the Lagrange and Hamiltonian representation of a system reacting with an environment are discussed, and the condition of zero dissipation in the formulation of the optimal-control problem defining the combined solution of the state and adjoint variables is illustrated.

Realisation of impedances Kpn

Abstract: This letter describes a single-loop feedback circuit presenting a driving-point impedance of the form Kpn over a frequency range ω < <0, where ω0 is chosen in the design. The stability of the circuit is discussed in terms of rate of closure of the Bode plots of open-loop voltage gain and the reciprocal of the feedback factor.