Contactor servomechanisms employing sampled data

This paper introduces a sinusoidal response method of analysis and synthesis of a contactor servomechanism employing sampled data. Because of the presence of sampler, clamper, and contactor, the system is discontinuous in time as well as being nonlinear. The sinusoidal method provides a useful guide in analysis and synthesis. It enables one to determine the conditions of occurrence of self-sustained oscillations and their amplitudes and frequencies; and to evaluate critical values of certain system parameters. Electronic analogue computer techniques are employed to check the accuracy of the sinusoidal response method.