In this paper, we present a composite nonlinear feedback (CNF) control technique for linear discrete-time multivariable systems with actuator saturation. The CNF control law serves to improve the transient performance of the closed-loop system by adding an additional nonlinear feedback. The linear feedback can be designed to yield a quick response at the initial stage, then the nonlinear feedba...

This paper presents the experimental results of the investigation of the effects of the observer poles for shaping the dynamic responses of state-space systems with system poles placed by state vectors obtained from full-order observers instead of the original full state vectors, which is assumed to be unavailable. The particular parameters considered in the shaping of the dynamic responses in ...

In this paper, a theory is developed in support of parallel realizations of the distributed sample scramblers (DSS) in the cell-based ATM transmission environment. For the relevant parallel realizations of the SRG (shift register generator) engines and the SRG sequence-generating circuits, the PSRG theory is applied which is readily available for parallel FSS (frame synchronous scrambler). For ...

In cement plant, since all processes are chemical and irreversible, monitoring and control is a critical factor. If the process is not controlled at any stage, the final product can be damaged or lost. Thus, in such environments, considering the quality of the product at each state is essential. Also, to control the process, communication among different parts of production line is essential. T...

Many marine populations exhibit high variability in the recruitment of young into the population. While environmental cycles and oceanography explain some patterns of replenishment, the role of other growth-related processes in influencing settlement and recruitment is less clear. Examination of a 65-mo. time series of recruitment of a common coral reef fish, Stegastes partitus, to the reefs of...

The element settling due to the combined effects of gravity, thermal gradient, radiative acceleration and concentration gradient may lead to important abundance variations inside the stars, which cannot be neglected in the computations of stellar structure. These processes where first introduced to account for abundance anomalies in “peculiar stars”, but their importance in the so-called “norma...

Most of control systems in vogue are Linear Time Invariant (LTI) systems and are characterized by several parameters such as settling time, over shoot and rise time etc. Optimization of these parameters is required to meet the desired system response and smooth operation of the system. In this paper, an optimization based compensator is designed and implemented for a closed loop LTI system and ...

This study presents a mathematical model based on Fourier decomposition of a sequence of internal signals generated in a complex system by a sequence of external pulses time series for characterizing suddenly emerging phenomena as nonlinear transitions. Newly created temporal patterns extracted from internal signal flow mathematically represented as oscillations with long period interact as new...

This paper presents a comparative analysis of two intelligent reference learning techniques to achieve better performance of pitch control of an aircraft. Fuzzy Model Reference Learning Controller (FMRLC) and Radial Basic Function Neural Controller (RBFNC) are designed for pitch control of a FOXTROT fighter aircraft. These controllers utilize a learning mechanism, which observes the plant outpu...

In this article is proposed the Direct Torque Control (DTC) with Space Vector Modulation (SVM) based on Self-Tuning PI-Type Fuzzy (STPIF) controller. This controller determines dynamically the load angle between stator and rotor flux vectors and in consequence the electromagnetic torque necessary to supply the motor load. The rule base for STPIF controller is defined in function of the error an...