Kalman filtering is applied to the problem of System Identification by interchanging the roles of the state variables and the unknown parameters. It is assumed that simultaneous operating records of the controls applied and the measured outputs of the plant are available, and that the records of...

A discussion of various approaches to modelling the bulk load as seen at a high voltage bus of an electric power system leads to a mathematical model and an analogue representation suitable for an Electronic Power System Simulator. The load is represented as real and reactive power as a...

The analog computer simulation of the electrical operation for a Servoed Altimeter with Automatic Mechanical Standby is described. The objective of this simulation is to obtain the optimum servomechanism performance by varying the loop gain and the system damping factor. The loop gain is varied...

La boucle de commande optimale d'un système doit se compléter par une boucle de correction. Une structure de la boucle de correction des systèmes optimaux en temps réel est proposée. Une réalisation pratique sur une calculatrice hybride est exposée et les résultats sont donnés.

The accuracy of computer results is determined by three important factors:1the error causes of the computing elements;2the problem characteristics (e.g. open and closed computing diagrams);3the way the problem is programmed on the computer.

Catastrophe theory has been developed as a new branch of applied mathematics by various workers. This paper presents the possibility of using an analogue computer for manipulating the bimodal and higher functions of catastrophe theory.

The author suggests a method by which a function generator for an integer order Bessel function o f the first kind could be constructed, by making use o f a defining integral for these functions which involves the common trigonometric functions.

In the article new problems dealing with the use of analog computer in hybrid loops are discussed, among them a review of the methods concerning optimal determination of scale factors and transfer coefficients. New approach is introduced based on the notion of optimal scales vector.

A finite element method is presented for solving boundary value problems for ordinary differential equations in which the general solution of the differential equation is computed first, followed by a selection procedure for the particular solution of the boundary value problem from the general...