This paper is about the design of a Sliding Mode Controller (SMC), with modified PI-D sliding surface, for the control of First Order Plus Dead Time (FOPDT) process. In the modified PI-D sliding surface, error is connected to the proportional and integral elements of the controller, and the derivative of the system output is connected to derivative element of the controller. The usage of PI-D s...

This study describes the direct torque control-DTC approach, based on Sliding Mode Control (SMC) technology with chattering reduction, for reducing ripple of Switched Reluctance Motor (SRM). The SRM control loop has been given SMC treatment to account low-frequency fluctuations in output. To maintain a consistent motor speed, sliding mode controller modifies value reference current. findings de...

In this study, a robust controller for voltage regulation of the POESLL converter worked in continuous conduction mode is presented. POESLL converter is a DC/DC converter with a high voltage gain. DC/DC converters are used in telecommunication systems, power sources and industrial applications. Owing to the switching operation, the structure of the POESLL converter is highly non-linear. In addi...

This paper presents a particle swarm optimization (PSO)-based neuro-sliding mode controller for the transient stability enhancement of multimachine power systems with unified power flow controller (UPFC). The UPFC is modeled as controllable loads. These controllable parameters are obtained using the sliding mode control (SMC) strategy. A PSO-based single neuron controller is used to adapt the p...

An adaptive fuzzy sliding mode controller (AFSMC) is adopted to reduce the 2D flow-induced vibration of an elastically supported square-section cylinder, free to oscillate in stream-wise andtransverse directions in both lock-in and galloping regions. The AFSMC strategy consists of a fuzzy logic inference system intended to follow a sliding-mode controller (SMC), and a robust control syste...

The dynamical model of manipulator robot is represented by equations systems which are nonlinear and strongly coupled. Furthermore, the inertial parameters of manipulator depend on the payload which is often unknown and variable. The sliding mode controller (SMC) provides an effective and robust means of controlling nonlinear plants. The performance of SMC depends on control parameter selection...

The paper by Liana, Zhao, and Dimirovskid shows one of the latest advances in switched systems by incorporating sliding mode control with a nonlinear integral switching surface. It is worthwhile comparing two types of switching mechanisms employed in this work. The first type is the system structural switching with an average dwell time. Hence, the switching frequency should be finite, and the ...

The method proposed by Rojas et al.1 for the design of sliding mode controllers (SMC) for unstable first order plus time delay systems, is extended for delay-time constant ratio (*) up to 1.8. The SMC settings obtained for various * are fitted by simple equations. Up to * = 1.2, the method is found to be more robust than that of latest PID Controller proposed by Padmasree et al.2 There is no me...

This paper proposes an automatic tuning algorithm for a sliding mode controller (SMC) based on the Ackermann's formula, that attenuates structural vibrations of seismically excited building equipped with Active Tuned Mass Damper (ATMD) mounted its top floor. The switching gain and surface SMC are designed through proposed to suppress by minimizing either floor displacement or control force appl...

The speed loop of the AC servo system used to apply PI control method, it makes the system vulnerable to the volatile motor parameters and load disturbances. Sliding mode control(SMC) has successfully overcome the above-mentioned defects of PI control method and is expected to be widely used in high-performance servo systems. The id=0 control method is adopted in this paper and a reaching law s...