Modification of Ordinary Differential Equations MATLAB Solver

Abstract

Various linear or nonlinear electronic circuits can be described by the set of ordinary differential equations (ODEs). The ordinary differential equations can be solved in the MATLAB environment in analytical (symbolic toolbox) or numerical way. The set of nonlinear ODEs with high complexity can be usually solved only by use of numerical integrator (solver). The modification of ode23 MATLAB numerical solver has been suggested in this article for the application in solution of some special cases of ODEs. The main feature of this modification is that the solution is found at every prescribed point, in which the special behavior of system is anticipated. The extrapolation of solution is not allowed in those points.