Limit Cycle Prediction in Free Structured Nonlinear Systems

Abstract The paper outlines sane interesting methods for the accurate prediction of limit cycles in a large range of single-variable and multivariate nonlinear free structured systems. Free structured systems enable a greater range of systems to be analysed than the more usual situation with one nonlinear block and one linear block. The methods also enable all limit cycle predictions made to be accurately verified and refined until they are effectively exact. A CAD package is briefly discussed which implements the limit cycle prediction methods.