Abstract In this paper, first, the stability margin and stabilizability margin of multidimensional (nD) systems are considered. In particular, the concept of stabilizability margin is introduced for the first time and it is defined to be the largest stability margin that a closed-loop feedback system can reach by menas of any stabilizing compensator. The investigation of stabilizability margin ...

Using H∞ control, the design problem is formulated in terms of user defined weighting polynomials on the process closed-loop Sensitivity functions to achieve desired closed-loop performance and robust stability in the presence of process modelling error. In this paper stability conditions , in terms of the process sensitivity functions, are derived for processes containing a pure time delay for...

This talk reports on an analytic derivation of the complete stability region of the Proportional Integral (PI) Active Queue Management (AQM). The stability region represents the entire set of the feasible design parameters, i.e., the proportional and the integral gains, that stabilize the closed-loop TCP-AQM system. AQM controls congestion by proactively marking or dropping packets before the i...

in this paper, a new analytical method to find a near-optimal high gain controller for the non-minimum phase affine nonlinear systems is introduced. this controller is derived based on the closed form solution of the hamilton-jacobi-bellman (hjb) equation associated with the cheap control problem. this methodology employs an algebraic equation with parametric coefficients for the systems with s...

in the recent decade, special attention is paid to reverse logistic due to economic benefits of recovery and recycling of used products as well as environmental legislation and social concerns. on the other hand، many researches claim that separately and sequential planning of forward and reverse logistic causes sub-optimality. effective transport activities are also one of the most important c...

In this paper, we introduce a hybridization-based feedback control synthesis method for potentially unstable nonlinear continuous-time systems. We construct discretization and that ensures dissipation form of incremental input-to-state stability property number abstraction-based methods rely on or benefit from. This enables the use these also case systems, to achieve reachability temporal logic...

In this article, control oriented uncertainty modeling of an uncommon quadrotor in hover is discussed. This consists two counter-rotating big rotors on longitudinal axis and small tilt lateral axis. Firstly, approximate linear model vehicle around obtained by using Newton--Euler formulation. Secondly, specific assigned to each parameter. Resulting uncertain converted into a fractional transform...

In this paper, a low dropout (LDO) circuit based on curvature compensation benchmark and closed-loop stability is designed. This compensates for the higher order term of VBE in BJT through subthreshold characteristic MOSFET achieves effect compensation. The bandgap reference provides stable input voltage LDO circuit, while source follower adaptive bias improve response speed circuit. temperatur...

This contribution is focused on graphical investigation of robust stability for a feedback control loop containing the parametrically uncertain second order time-delay model of a main irrigation canal pool and a fractional order PI controller. The robust stability of the family of fractional order closed-loop characteristic quasipolynomials is analyzed by means of the sampled value sets and app...