this paper provides a comparison of the maximum inter-story drifts and tip acceleration of both a 16 and 30 stories building each with different structural systems; hybrid r.c moment frame with shear walls and hybrid steel frame with shear walls and x bracing which are equipped by passive dampers. each of the building models were analyzed as fully non-linear structures for variety of dampers pl...

In this paper, passive uncertainties are introduced and we deal with the robust passive observer-based control problem for a class of singular systems, and then provide the sufficient conditions of the passive control for the closed-loop systems of this kind of systems, whose controller is based on observer. Finally two numerical examples are provided to show the usefulness and the feasibility ...

We study a class of non-autonomous linear boundary control and observation systems that are governed by multiplicative perturbations. This is motivated fundamental partial differential equations, such as controlled wave equations Timoshenko beams. Our main results give sufficient condition for well-posedness, existence uniqueness classical mild solutions.

in this study, a robust controller is designed for fuzzy network control systems (ncss) using the static output feedback. delay and data packet dropout affect on the stability of network control systems, and therefore, the asymptotic stability condition is established considering delay and data packet dropout. delay is time-varying while the lower and upper bounds for delay is defined, and the ...

Passive systems have the beneficial property that their interconnections with other passive systems result in necessarily stable systems. This vmue of passive systems can be exploited with hydraulic systems to build owerful machines that are safe and human friendly. A digculty in a plying the passivity concept to electrohydraulic systems is i a t they are not intnnsically passive. In a previous...

in recent years, need to increase the convenience of trips in railway vehicles causes that train operators and manufacturers focus on reducing the noise level which is sensed by passengers. in this paper, first the state of modeling acoustic noise in cab train is discussed and natural frequencies and acoustic mode shapes are derived and then formulation of acoustic pressure in the cab will be o...