In this article an adaptive decentralised sliding mode controller and observer for asynchronous nonlinear large-scale systems with backlash is proposed. In the literature, only the synchronous case for input nonlinearities such as dead-zone and saturation is found. In this article, the asynchronous case for systems with backlash is studied considering the backlash effect. Owing to the complexity

Since 1981, millions have died of HIV with no available cure until now. Therefore, researchers have always tried to study its dynamics through mathematical modeling to make it more predictable and controllable. In this chapter, the authors are concerned with two different models: the viral and epidemiological dynamics of HIV. Commonly, researchers introduce HIV dynamics using ordinary differential

Systems without equilibrium such as electromechanical models with rotation and electrical circuits with cylindrical phase space were studied a long time ago. However, chaotic systems without equilibrium have received significant attention recently after the introduction of hidden attractors. Interestingly, an attractor of a no-equilibrium system is hidden because its basin of attraction does not

The main objective of this chapter is to evaluate the performance of a fractional-order PID (FO-PID) controller for set point tracking, disturbance rejection, and model uncertainties for the highly nonlinear coupled three-link planar rigid robotic manipulator system. Generally, a three-link planar robot is used in the manufacturing industry and experiences disturbance in many forms, such as

In this chapter, a new technique has been proposed for reducing the harmonic content of a three-phase PWM rectifier connected to the networks with a unit power factor and also providing decoupled control of the active and reactive instantaneous power. This technique called direct power control (DPC) is based on artificial neural network (ANN) controller, without line voltage sensors. The control

One of the advantages of fractional order is the extra degree of freedom added by the fractional-order parameters, which enrich the analysis with more details in new dimensions. This chapter introduces factional-order conventional filters of orders α, 2α, and 3α. The general transfer functions of continuous-time filters (low-pass, high-pass, and band-pass filters) to the noninteger-order

Despite the complex nature of fractional calculus, it is still fairly possible to reduce this complexity by using integer-order approximation. Each integer-order approximation has its own trade-offs from the complexity, sensitivity, and accuracy points of view. In this chapter, two different fractional-order electronic circuits are studied: the Wien oscillator and the CCII-based KHN filter with

Chaos theory describes the dynamical systems which exhibit unpredictable, yet deterministic, behavior. Chaotic systems have a remarkable importance in both modeling and information processing in many fields. Fractional calculus has also become a powerful tool in describing the dynamics of complex systems such as fractional order (FO) chaotic systems. The FO parameter adds extra degrees of freedom

This chapter merges the fractional calculus and two-port networks in oscillator design. The fractional-order elements α and β add extra degrees of freedom that increase the design flexibility and frequency band while providing control over the phase difference. A prototype of the fractional-order two-port network oscillators is introduced. It consists of a general two-port network and three

In this paper, an automated universal verification methodology (UVM) tool for rapid functional verification is presented. Now, UVM dominates the verification process but, it is very hard and too complicated to learn. This paper introduces a lightweight UVM tool which allows the user to rapidly verify complex RTL designs and different IPs. Also, it allows the user to perform the simulation for any