Hybrid geno-fuzzy controller for seismic vibration control

Abstract

This paper evaluates the possibility of applying a geno-fuzzy control strategy to a magnetorheological semi-active damper for seismic vibration control. The proposed control starategy is designed and then tested and validated in a simulated environment. The control strategy is validated by considering a more destructive seismic disturbance as input for the damperstructure system. The proposed geno-fuzzy hybrid controller offers improved performance and implementability for real-time applications.

Seismic Protection of an Over-Ground Parking Lot over the Dambovita River Using the Basic Insulation Method

“…The following conclusions are drawn: a) The correct assessment of the seismic action on a structure must take into account the following factors: the type of earthquake and its intensity (fast-slow, magnitude), the type of soil of the site, the structural characteristics (type of structure, materials used, structural system). Taking into account only the peak value of land acceleration without considering the type of earthquake possible is not sufficient [14]; b) The technologies that use the principle of isolation of structures base have proven the most effective and viable for the types of structures envisaged. Thus, a number of anti-seismic compliance requirements are noted, such as: the own period of vibration of the isolation system must be chosen in such a way as to overcome the vibration periods induced by the most probable seismic movement; for the structures with an isolated base, a depreciation coefficient of at least 10% shall be ensured in order to achieve the most appropriate depreciation yield; compared to the TMD systems, in the case of base insulation, the amortized structures have a relatively constant behaviour during the seismic application; c) The Romanian Norm P100/2011 -Seismic Design Code does not provide that the characteristics for the amortized seismic design DESI would be useful; d) Not knowing the technologies use the principle of isolation of the base or the malfunctioning that can lead to real disasters -progressive or generalized collapse, because most of these systems exert structural control forces that can be much worse than the earthquakes; e) The technologies that use the principle of insulation of the base of structures are among the most effective technologies of depreciation and dissipation of seismic energy, the degree of reduction of seismic action largely dependent on the structural system amortized and the expected seismic movement to be depreciated by dissipative systems; f) Ensuring the anti-seismic protection of structures through the use of special dissipative and depreciation technologies is continuously expanding in recent years.…”

“…10 Operation of a depreciation system based on base insulation technology [13] Fig. 11 Diagram of movements at the top floor -comparative analysis (non-amortised vs. amortised system [14] The comparative analysis non-amortised vs. amortised system is presented in fig. 11.…”

Genetically enhanced modal controller design for seismic vibration in nonlinear multi-damper configuration

“…A hydraulic-class actuator, 21 the MR damper (Figure 5) uses as inputs a command current and the velocity of the story on which it is mounted, in order to generate the necessary control forces. The damper is a hydraulic cylinder filled with MR fluid-a magnetically polarizable micron-sized suspension in oil or other fluids.…”

Development of an Advanced Semi-Active Damper Using Smart Fluid

“…In [2] for controlling the nonlinear vibrations of the semi-active suspension system, fuzzy control rules and self-adapt fuzzy control strategy are applied. In [3]- [5], fuzzy-PID based MR damper is used for mitigating unwanted vibration. But here they suffered badly in their experiment for the sedimentation problem of the MR fluid.…”