Generalized Integration on the Analog Computer

One of the major limitations of the electronic analog computer is its inability to perform directly an integration with respect to a dependent variable. This paper reviews the usual methods of overcoming this limitation, describes the results on an attempt to use Padé time-delay units in generalized integration, and presents the development of a new analog integrator based on a simple numerical integration formula. The integrator can be instrumented using standard analog computer components. The performance of the device is illustrated with several examples.