
This paper is a comparison of experimental investigation of modal properties of two different methods - experimental modal analysis and acoustic holography (SoNAH method). Comparison is made for a simple system. Good agreement between both methods has been found.
The purpose of this article is to provide an elementary introduction to the subject of chaos in the electromechanical drive systems. In this article, we explore chaotic solutions of maps and continuous time systems. These solutions are also bounded like equilibrium, periodic and quasiperiodic solutions.