Structural Vibration Suppression Using a Reduced-Order Extended State Observer-Based Nonsingular Terminal Sliding Mode Controller with an Inertial Actuator

In this paper, we mainly aimed to design a reduced-order extended state observer-based active vibration controller for structural control system with total disturbances, i.e., model uncertainties, higher harmonics, and external excitations. A observer (RESO)-based nonsingular terminal sliding mode (RESO–NTSMVC) method is proposed the suppression of an all-clamped plate structure inertial actuator. First, second-order space thin plate, actuator, was established by solving dynamic partial differential equation analyzing physical model. Second, excitations, were estimated compensated using RESO via feedforward part. Third, NTSMVC based on value designed obtain fast-tracking rate effective performance. addition, stability closed-loop proven Lyapunov criterion. Finally, semi-physical experimental instrument built MATLAB/Simulink real-time environment NI-PCIE6343 acquisition card verify strong anti-disturbance performance method. The comparison results showed that amplitudes could be reduced 11.7 dB, when traditional (ESO–NTSMVC) achieved effect only 6.5 dB. comparative possessed better