Stability analysis of a linear friction-induced vibration model and its prevention using active force control

摘要: This paper presents friction-induced vibration (FIV) caused by combined mode-coupling and negative damping effects in a simple FIV model. In doing so, new four-degree-of-freedom linear model which consists of slider block is proposed then simulated using MATLAB/Simulink. Stability or instability the defined convergence divergence time domain responses block. Having found critical slope friction-velocity characteristics that generate instabilities model, conventional closed loop proportional-integral-derivative (PID) controller first introduced into main order to attenuate level subsequently suppress it. Later, integrated with active force control (AFC) element effectively reject disturbance reduce vibrations. It PID-AFC scheme effective reducing compared pure PID alone. Thus, can be one potential solutions system.