This note presents an indirect adaptive control scheme applicable to nominally controllable non-necessarily inversely stable first-order continuous linear time-invariant systems with unmodelled dynamics. The control objective is to achieve a bounded tracking-error between the system output and a reference signal. A least-squares algorithm with normalization is used to estimate the plant paramet...

In this study, proportional-integral (PI) controller design with a geometric approach for first order time-delayed systems is presented. This method can be expressed as an improved version of the weighted center method. The based on calculating gravity stability triangle selected inside boundary locus (SBL). Stability determined along ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xml...

This work presents a novel control technique that combines concepts of Sliding Surface with Linear Algebra methodology for controller design. The result is an improved robustness, while the chattering effect attributed to great uncertainties avoided. A First Order Plus Dead Time (FOPDT) model process used develop based on and concept sliding surface improve its performance under uncertainties. ...

the symphypleona fauna of mazandaran province was studied in 2013. the specimens were extracted by berlese funnel from soil, leaf litter and dead woods and identified after preparing microscopic slides. in present study, the specimens are belonging to the families, sminthurididae and katiannidae. among the species of katiannidae, sminthurinus gisini gama, 1965 is recorded for the first time fro...