Design of robust controllers for uncertain non-minimum phase and unstable plants with the Quantitative Feedback Theory (QFT) is addressed in this paper. Several counterexamples including non-minimum phase plants and unstable plants are given to illustrate the errors in Horowitz and Sidi method 7, 5]. It is shown that the stability requirement of the new nominal plants is misused or ignored in t...

This study deals with the vibration response of sandwich plate with nano-composite core and smart magneto-strictive face sheets. Composite core is reinforced by carbon nanotubes (CNTs) and its effective elastic properties are obtained by the rule of Mixture. Terfenol-D films are used as the face sheets of sandwich due to magneto-mechanical coupling in magneto-strictive material (MsM). In order ...

A dual-rate control system is a hybrid composed of continuous-time and discrete-time elements with two sampling frequencies. In this work, new frequency domain analysis design approach, based on the quantitative feedback theory developed, to cope robust stability tracking specifications. Tracking specifications are considered not only in but also continuous-time, that allow precise description ...

This course relies on a work in preparation with A. Gloria [2], which is a continuum version of [1]. It slightly differs from [2] because the present analysis does not rely on Green’s functions and treats the periodic case. For related work on an emerging quantitative theory of stochastic homogenization, including many references, we refer to three preprints, which are available on my web page:...

We introduce and study the very general multivariate stochastic positive linear operators induced by general multivariate positive linear operators that are acting on multivariate continuous functions. These are acting on the spaces of real differentiable multivariate time stochastic processes. Under some very mild, general and natural assumptions on the stochastic processes we produce related ...

Aims and Method To discuss the methods involved in gathering real-time feedback (RTF) by a London Home Treatment Team. We hypothesized that RTF would lead to changes in service provision and improvements in patient and carer feedback. Patients were invited to provide RTF on discharge. Quantitative and qualitative data were collected and analyzed centrally by the Trust before being disseminated ...

The objective of this Part II the paper on a novel feedback approach is that unifying all previous general models within single framework and obtaining new results. In order to pursue goal, we exploit multiple possibilities implementation generic three-terminal circuit (TTC) has be inserted in cut loop when cut-insertion theorem (CIT) applied for analysis network. We present based direct openin...