Nonlinear Discrete-Time Integral Sliding Mode Control of an Induction Motor: Real-Time Implementation

This paper presents a discrete-time integral sliding mode control with anti-windup for single-input single-output linear systems with external disturbances whose upper bound is not required to be known. The proposed scheme is designed by using a linear quadratic regulator approach in order to ensure the stability of the closed-loop system in the quasi-sliding mode. The robustness with respect to external disturbances, the follow-up of a reference model and the elimination of the reaching phase are guaranteed. The chattering phenomenon is avoided using the saturation function in the controller design. Furthermore, the anti-windup method is used in order to improve system performance and to reduce the control input values in the initial phase. Simulation results show that the developed controller achieves better results than the conventional discrete-time sliding mode controller and the discrete-time integral sliding mode controller.

Section: Discrete-time Integral Sliding Mode Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Discrete-time Integral Sliding Mode Control with Anti-windup

Jedda¹,

Douik²

2018

“…Discrete time integral sliding mode control was implemented on an induction motor in (Chihi et al, 2017). In this paper, an integral switching surface was developed so as to decrease the settling time and steady state error of the system.…”

Section: Sliding Mode Control (Smc) Is a Nonlinear Control Design Tecmentioning

confidence: 99%

Real Time Implementation of Adaptive Sliding Mode Controller for a Nonlinear System

Kanthalakshmi¹,

Annal²

2018

The objective of this work is to design a controller that may maintain the level of a conical tank which has nonlinear dynamics. Because of the nonlinearity present in the dynamics of the plant, the controller parameters have to be dynamic as well, so that the performance of the system may be enhanced. Hence sliding mode controller which is robust is designed with an adaptive mechanism, so that it could cope up with the varying dynamics of the system. In this paper, three different algorithms were used to study the system behaviour by using simulation. These algorithms were also implemented in real time. When its performance was observed in real time, the adaptive sliding mode controller proved to outperform when compared to reaching law and super twisting algorithm based sliding mode controllers.

“…Therefore, in the past decades, the reaching phase free sliding mode control strategy development was the key focus of several researchers. In order to reject the matched uncertainties, an integral sliding mode-based strategies were proposed in [9,13,21], whereas the mismatched uncertainties were suppressed via synergic strategies of an integral sliding mode and an H ∞ control [4,5,18]. Similarly, the other sliding-mode-based consensus and synchronization strategies provided robustness consensus or multi-robot systems.…”

Section: Introductionmentioning

confidence: 99%

An Integral Sliding Mode-Based Robust Consensus Control Protocol Design for Electro-Mechanical Systems

Khan¹,

Akmeliawati²,

Khan³

2019

This paper proposes a consensus tracking control for a class of second-order multi-agent nonlinear systems and generalizes the concept of integral sliding mode for networked systems. This design relies upon an integral manifold which is defined as a function of the consensus error variables. The designed integral manifold helps in the establishment of sliding mode without reaching phase. Consequently, the robustness against uncertainties is guaranteed from the very start. The continuous control components, of the control laws, governs the dynamics of the nonlinear system in sliding mode and the discontinuous terms handle the disturbances. The stability analysis is given to show the sliding mode establishment and an example is considered to demonstrate the benefits of the proposed strategy.