Abstract
This paper deals with the tracing of the equilibium curve of a non-linear system by using the coodinate transformation. The apparent regularity of a model of a non-linear system near and at the saddle-node bifurcation point is improved locally by coordinate transformation. The global tracing including saddle-node bifurcation point is realized by revising the coodinate transformation on the way of tracing the curve. The efficiency of the method is shown in practical large scale system.
