The theory and practice of designing of invariant measurement transducers and systems based on the two-channel principle

The article presents the theoretical foundations designing of invariant measurement transducers based on the principle of two-channel, which was proposed by Academician B.N. Petrov. This method is implemented in the class of parametric measurement transducers, including the measurement bridges and voltage dividers. Questions of physical realizability of two-channel measuring transducers were considered. Measuring transducers in this case considered as the systems. Areas of possible applications of developed class of measurement transducers and the direction of future research were indicated.