Nonlinear signal?based control for shake table experiments with sliding masses

This study introduces the first application of nonlinear signal-based control (NSBC) to shake table experiments with sliding masses. NSBC utilising a signal was specifically developed for system control. In steel structure, it realised seismic acceleration record on near 100% accuracy even when structure displayed characteristics due yielding its components. Regarding severity, is stronger than because rapid shifts stick and slip states. Sliding utilised structural damage mitigation in isolation systems, which are prominent devices earthquake engineering. However, occurs table, significantly jeopardises Thus, this investigates performance involving phenomenon. First, examines effectiveness via numerical simulations interface, demonstrated by Karnopp model, friction coefficient 0.2. Subsequently, linear model designed based stability analysis assess margins obtained from different models. Experiments performed placing masses weighing approximately twice weight interfaces coefficients 0.2–0.4. these experiments, reasonable design expected records sufficiently high accuracies, whereas inversion-based failed. verifies