Linearization of Nonlinear Components in Instruments

Real instruments, devices, and components are found to be nonlinear and are represented by nonlinear analytical models. Accordingly, linear systems (or models) have idealized representations. However, it is realized far more convenient to analyze, simulate, design, and implement nonlinear devices through the use of linear models. Also, regarding some devices, the degree of nonlinearity may not be significant. In such cases, nonlinear devices are often “approximated” by linear models. Against that background, this paper explores several important methods of linearization of nonlinear physical devices with practical examples. KEYWORDS: Nonlinear instruments, linearization methods, linearization using the local slope, linearization using energy equivalence