Continuous time controllers using digital programmable devices

Stochastic logic is based on digital processing of a random pulse stream, where the information is codified as the probability of a high level in a finite sequence. The probability of the pulse stream codifies a continuous time variable. Subsequently, this pulse stream can be digitally processed to perform analog operations. In this paper we propose a stochastic approach to the digital implementation of complex controllers. This approach allows for the realization of the controllers and A/D and D/A converters within a digital programmable device, leading to simple circuit implementations. A practical realization of a nonlinear dissipative controller for the switching power series resonant converter is presented