Synthesis of multiple loop feedback systems Part I†
A.G.J. Holt, John Ike Sewell · International Journal of Control · 1969
This paper presents a general synthesis method for multiple loop feedback systems which is applicable to the realization of all the known configurations together with others resulting from this investigation. The active device may be an amplifier of any type, gain or phase characteristics. The basic method utilizes an extended node introduction synthesis theory, which facilitates the generation of many possible realizations for a given function. Although the theory developed is used to synthesize RC multi-loop feedback structures, it is equally applicable to the synthesis of RLC multi–loop feedback systems. Rules for the numbers of active and passive node introductions are given, and a number of examples illustrate the implementation of the technique and the various transformations required. Synthesis of various functions is considered, emphasis being laid upon the realization of those which provide filter characteristics.