This paper discusses the use of hybrid computation in the optimal design of complex hydro-mechanical systems. To illustrate the method, three systems, namely, a machine-tool hydraulic copying system, motion-compensated ship-borne crane and a novel hydrostatic urban vehicle drive are simulated....

Numerical results using two modified Crank-Nicolson time discretizations are presented for finite element approximations to the nonlinear parabolic equation in 1Rd, c(x,u) − (aij (x,u)u,j),i + bi (x,u)u,i = f(x,t,u), where the summation convection on repeated indices is assumed. Both...

The method of orthogonal collocation on finite elements is described for solution of ordinary and partial differential equations. Benefits and limitations of the method are outlined by comparison with Galerkin finite element methods. Practical difficulties are given which arise in the...

We propose a new concept suitable for performing static state estimation in large scale electric power systems. It consists in decomposing the over-all system into sub-systems and in carrying out a two-level calculation. In a lower hierarchical level, a standard state estimation is at first...

Varga, in his excellent book [4] and in a later paper of his [5], extended the SOR theory in various directions by having considered the well known Ostrowski-Reich theorem as a starting point. In this paper we extend the theory by considering three-part splittings of Varga's type, where one of...

Distributed-parameter systems have infinite dimensional states and hence, in practical observer and control design applications, the problem of approximate finite-dimensional state reconstruction arises. In this paper a useful approach for implementing such an approximation is presented, which...

The constant coefficient in the classical slotted wall boundary condition is expressed as a line integral of the slot-induced, rapidly varying velocity. Aerodynamic panel methods which employ a vector continuous loading concept in order to minimize panel leakage are used to compute the inviscid...

A simple conservative semi-discretization of hyperbolic equations is analyzed in terms of its response to time-varying boundary conditions.