Abstract: In this note, a nonlinear axially moving string with the Kelvin–Voigt damping is considered. It is proved that the string is stable, i.e., its transversal displacement converges to zero when ...

Abstract: In their paper (1), the authors consider a nonlinear mechanical system represented by Display Formulamẍ+(Kd+b)ẋ+Kpx=Kdu̇+Kpu−sign(ẋ)μkN (1) In Eq. 1, m is the mass of the system, Kd is the ...

Abstract: In a recent paper, the authors consider the dynamics of an n-degree-of-freedom linear system represented by Display FormulaMÿ(t)+Dẏ(t)+Ky(t)=f(t), y(0)=y0, ẏ(0)=ẏ0,for all t≥0, where the vector ...

Abstract: In this note, a robustness issue of control laws designed by the input-shaping methodology is brought to the fore. A control law designed by this methodology consists of a sequence of step ...

Abstract: In 1, the authors consider n-degree-of-freedom non-classically damped linear systems. They write the system representation in the modal coordinates as Display FormulaẌ(t)+2CẊ(t)+Λ2X(t)=0, X(0)=X0, ...

Abstract: In this paper, the long-standing problem of designing disturbance observers for multi-input multi-output (MIMO) systems is solved. The disturbance observer presented here has a simple structure ...

Abstract: In this paper, several mathematical models that are more realistic representations of mechanical bandpass filters are studied. Such filters can be used in energy scavengers to convert energy ...

Abstract: In this paper, design of control laws for V-gimbaled control-moment-gyro (CMG) devices is studied. Such a device has two gyros that are used to control the slewing motion of space truss arms. ...

Abstract: In this paper, a methodology for designing efficient energy scavengers is proposed. The scavenger consists of a cantilever beam on which piezoelectric films and a mass are mounted. The mass ...