Linear time-invariant systems with matched perturbations are exactly stabilized in finite time by means of dynamic output-feedback control under the assumptions of a permanent complete vector relative degree and bounded perturbations. The approach makes use of global high-order sliding-mode controllers and differentiators. A criterion of the differentiator convergence is developed for the detec...

In this paper, we investigate few memristor-based analog circuits namely the phase shift oscillator, integrator, and differentiator which have been explored numerously using the traditional lumped components. We use LTspice-IV platform for simulation of the abovesaid circuits. The investigation resorts to the nonlinear dopant drift model of memristor and the window function portrayed in the lit...

Discrimination between texture edges and geometrical edges is very difficult in low contrast images. Satellite images are low contrast images. It is important to extract the edges that are not clearly visible in case of Satellite images. The present work encompasses a new edge detection algorithm using newly constructed differentiator. Chebyshev polynomial based fractional order differentiator ...

In this paper we propose a new robust scheme of nonpeaking nonlinear observers. The observation strategy is issued from differential algebra where the unmeasured states are given as outputs of a time-varying linear differentiator that guarantees robustness against measurement errors. We show that for a certain initial condition, the n-dimensional differentiator does not exhibit the peaking phen...

Semi-global finite-time exact stabilization of linear time-invariant systems with matched disturbances is attained using dynamic output feedback, provided the system is controllable, strongly observable and the disturbance has a bound affine in the state norm. The novel non-homogeneous high-order sliding-mode control strategy is based on the gain adaptation of both the controller and the differ...

Some new active Voltage Controlled RC integrator and differentiator circuit realizations, with both single and differential input capabilities, using a few passive components and a current feedback amplifier (CFA) device, are proposed. A multiplier (ICL 8013) element has been appropriately utilized in the feed forward / feedback connection to obtain electronic tuning of the time constant (τo) b...

In this paper, a simple approach is proposed to design recursive digital differentiators and integrators by applying the concept of time-constant analysis. The time-constant combined with the magnitude response describes the system behavior of a digital differentiator and an integrator. Further, new recursive digital differentiator and integrator designs of first-order systems are also obtained...

In this study, an active microvibration isolation system is developed for precision space payload. Vibrational environment affects the performance and reliability of measuring instruments. To improve measurement accuracy payload, vibration based on eight modules, which are applied satellite, designed. A suppression control strategy multiple degrees freedom studied. hybrid method involving a fee...

Constructive inter-track interference (CITI) codes based on readback level have been investigated not to have the transitions which give readback pulses of opposite polarity from adjacent tracks in the perpendicular magnetic recording (PMR) channel with a differentiator [1]. Because it is however impossible to design such CITI codes for the PMR channel without a differentiator, CITI codes based...