Background: Experiments have shown that opioid drugs abuse during pregnancy can cause a delay in the development of the placenta. In mammals, the placenta is the most important channel for the exchange of Materialss between the maternal and fetal bloods. The present study investigates the time-dependent effect of the addiction duration of maternal morphine consumption during pregnancy. Material...

This paper presents H∞ control problem for input-delayed systems. A neutral system approach is considered to the design of PD controller for input delay systems in presence of uncertain time-invariant delay. Using this approach, the resulting closed-loop system turns into a specific time-delay system of neutral type. The significant specification of this neutral system is that its delayed coeff...

in this paper, a new t-s fuzzy hyperbolic delay model for a class of nonlinear systems with time-varying delay, is presented to address the problems of stability analysis and feedback control. fuzzy controller is designed based on the parallel distributed compensation (pdc), and with a new lyapunov function, delay dependent asymptotic stability conditions of the closed-loop system are derived v...