The stability of planar librational motion of an undamped, rigid satellite in eccentric orbit is first studied through an analog simulation of the governing, non-linear, non-autonomous equations of motion. The method is extended to investigate the effect of damping on stability and response of...

In this paper, the maximum principle is applied to minimum-time optimal-control problems, and an optimization algorithm is presented which can be implemented on a hybrid computer. The state and adjoint equations are set up on ASTRAC II, a high-speed analog computer capable of 1000 differential...

Combination of slow-type and repetitive analog computers through linkage and their parallel computation with interchange of signals make it possible not only to exhibit their respective advantages but also to increase their effectiveness. The linkage consists of a comparator and sample-hold...

Comment imposer une condition au contour d'un domaine quand ce contour passe par des noeuds intérieurs du réseau et qu'on ne sait y afficher que des intensités ?

Present day hybrid computers are built by combining an analog and a digital computer through a linkage. In such machines, the digital part affects the course of the analog computation by introducing functions, employing D/A converters, which are varied according to some programmed relationship....

This paper suggests procedure for automatic optimization of linear feedback control systems on an analog computer. Described procedure permits simultaneous adjustment of all available system parameters which extremize properly chosen performance index.