Non-linear aspects and selection of microprocessor controllers†
Edgar Maymon, Daniel Tabak · International Journal of Systems Science · 1978
Stability aspects of non-linearities introduced by using a microprocessor digital controller in a feedback loop are investigated, using the describing function analysis. In particular, 8- and 16-bit types of equipment are compared. The conclusion reached is that from the practical standpoint, there is no difference between the two types as far as stability is concerned. A system selection procedure, proposed in a previous paper, is implemented in the selection of microprocessor equipment to satisfy specified design criteria. The procedure is composed of stages involving curve-fitting and minimization. A particular example, illustrating the implementation of the procedure, along with final recommendations, is presented.