Third-Order Superharmonic Resonance Analysis and Control in a Nonlinear Dynamical System

Abstract

The present work discusses the dynamical analysis of the superharmonic resonance in a mass-damper-spring model controlled by a cubic-position negative-velocity feedback (CPNV) controller. Thanks to the harmonic balance technique, the approximate solution of the studied model can be extracted and then checked for stability using Floquet exponents. The cubic-position control gain is adjusted in order to suppress the model’s steady oscillations. In addition, the negative-velocity control gain is adjusted in order to shrink the period of the transient oscillations. Several plots are included to relate the car’s oscillatory amplitude with the model’s different parameters pre- and post-control so that we can determine the optimum conditions for running the model safely.

Keywords

• superharmonic resonance
• cubic-position negative-velocity feedback controller
• mass-damper-spring model
• harmonic balance method
• Floquet exponents