The application of control devices in coupled building system has been recently recognized as an effective alternative for seismic protection. In consideration of passive control approach, most of previous studies focused on application of fluid dampers, and the buildings in the coupled systems were in similar structural configuration. By recognizing the potential merits, such as simple in desi...

The paper discusses the design and performance of a novel type of passive control system used for suppressing unwanted vibrations in civil engineering structures subjected to both lateral and base excitation. The new control system is inspired by the traditional tuned mass damper (TMD) with the modification that the mass is replaced by an inerter. An inerter has a two-terminal flywheel device c...

This thesis demonstrates the successful application of Virtual Model Control (VMC) to a simulated sevenlink planar biped for walking dynamically and steadily over sloped terrain with unknown slope gradients and transition locations. The slope gradients were assumed to be between ± 200; and it had maximum transitional gradient change of less than 200 per step. The developed algorithm for sloped ...

Abstract In this paper, a hybrid mass damper (HMD) and its hyperstability thanks to power flow approach are studied. The HMD proposed combines an active control system with optimal passive device. initial is electromagnetic Tuned Mass Damper (TMD) the law modified velocity feedback phase compensator. resulting controller theoretically hyperstable ensures fail-safe behavior. Experiments performe...

A suspension system is one of the integral parts a hyperloop capsule train, which used to isolate car-body from bogie vibration provide safer and comfortable service. semi-active best candidates for its advantageous features. The performance relies greatly on control strategy applied. In this article, Skyhook (SH) mixed Skyhook-Acceleration Driven Damper (SH-ADD) controlling algorithms are adop...

In this research, the effect of shape parameters such as number of magnet wire turns, spools, thickness of the gap, and pole length in a Magneto-rheological (MR) fluid damper is analytically investigated and the optimization of these parameters is done with response surface method (RSM) which is combined Neuro-Fuzzy method and Particle Swarm Optimization (PSO) algorithm. Since the electro-magne...

In this paper, optimal design of hybrid low damping base isolation and magnetorheological (MR) damper has been studied. Optimal hybrid base isolation system has been designed to minimize the maximum base drift of low damping base isolation system where for solving the optimization problem, genetic algorithm (GA) has been used. In design procedure the maximum acceleration of the structure has ...

Free vibration of a simply-supported magneto-electro-elastic doubly-curved nano-shell is studied based on the first-order shear deformation theory in the presence of the rotary inertia effect. To model the electric and magnetic behaviors of the nano-shell, Gauss’s laws for electrostatics and magneto statics are used. By using Navier’s method, the partial differential equations of motion are red...

There 's nothing like an ugly loss to put a damper one of the biggest wins of the year. The top-ranked baseball team exploded for five runs in the eighth inning Tuesday to beat No. 7 Baylor University 6-1 at Cameron Field. But the Owls followed the win with a stinker at the Universitv of Houston the very next day. The Cougars, behind a three-run homer off senior starter Stephen Bess, put up sev...