Fuzzy Proportional Resonant Control of Vibration Testing System with Model Uncertainties

Abstract

This paper investigates a methodology for designing online feedback control without iteration for acceleration tracking control in mechanical vibration test. Mathematical model with 5% uncertainty of the measured structure is established by vector fitting method based on the experimental data. An improved PR controller with fuzzy control is proposed in order to improve the control performance of sinusoidal vibration system and eliminate the effect of vibration disturbance to the control performance. The controller has better control performance on multi-resonance frequency, time delay, disturbance and model uncertainty for vibration test control system. Finally, compared with the PID control, simulation results show that the designed controller has better effectiveness and superiority.