scholarly journals Sliding Mode Output Regulation for a Boost Power Converter

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 879
Author(s):  
Jorge Rivera ◽  
Susana Ortega-Cisneros ◽  
Florentino Chavira
Keyword(s):  
Sliding Mode ◽  
Reference Signal ◽  
Input Voltage ◽  
Power Converter ◽  
Electrical Circuit ◽  
Output Regulation ◽  
Regulation Theory ◽  
Output Tracking ◽  
Régulation Theory ◽  
Capacitor Voltage

This work deals with the novel application of the sliding mode (discontinuous) output regulation theory to a nonlinear electrical circuit, the so-called boost power converter. This theory has excelled due to the fact that trajectory tracking plays a central role. The control of a boost power converter for the output tracking of a DC biased sinusoidal signal is a challenging problem for control engineers. The main difficulties are the computation of a proper reference signal for the inductor current, and the stabilization of the inductor current dynamics or to guarantee the correct output tracking of the capacitor voltage. With the application of the discontinuous output regulation these problems are solved in this work. Simulations and real time experiments were carried out with an unknown variation of the DC input voltage, where the good output tracking of the capacitor voltage was verified along with the stabilization of the inductor current. The discontinuous output regulation theory has proven to be a suitable tool in the output tracking for the boost power converter.

Non-linear optimal fuzzy control synthesis for robust output tracking of uncertain micro-electro-mechanical systems

2016 ◽  
Vol 39 (8) ◽  
pp. 1146-1160 ◽  
Author(s):  
Alireza Modirrousta ◽  
Mostafa Shokrian Zeini ◽  
Tahereh Binazadeh
Keyword(s):  
Fuzzy Control ◽  
Sliding Mode ◽  
Reference Signal ◽  
Mechanical Systems ◽  
Control Synthesis ◽  
Sliding Mode Controller ◽  
Micro Electro Mechanical Systems ◽  
Output Tracking ◽  
Non Linear ◽  
Variable Universe Fuzzy Control

This paper considers the output tracking problem for micro-electro-mechanical systems (MEMS) under uncertainties and external disturbances. The robust non-linear controllers are designed by two methods. The first method consists of a backstepping strategy combined with a first-order sliding mode controller. Also, in order to reduce the chattering effect and to improve the robustness of the proposed scheme, a new variable universe fuzzy control action with an adaptive coefficient is used instead of the signum function in the switching control law. In the proposed fuzzy scheme, the centres of the output membership functions are optimized via three heuristic optimization algorithms including the artificial bee colony (ABC) algorithm, ant colony optimization (ACO) and particle swarm optimization (PSO). In the second method, a class of second-order sliding mode controller is combined with the backstepping strategy. The second controller includes the proposed optimal fuzzy controllers of the first method. The stability of the closed-loop systems in both approaches are proved via the Lyapunov stability criterion and the conditions of stabilization are provided by linear matrix inequalities (LMIs). Numerical simulations are carried out to verify the theoretical results and to demonstrate the robust performance of the proposed controller in output tracking of the time-varying reference signal.

Finite-Time Tracker Design for Uncertain Nonlinear Fractional-Order Systems

2016 ◽  
Vol 11 (4) ◽  
Author(s):  
Tahereh Binazadeh
Keyword(s):  
Fractional Order ◽  
Finite Time ◽  
Sliding Mode ◽  
Reference Signal ◽  
Convergence Time ◽  
Time Varying ◽  
Terminal Sliding Mode ◽  
Output Tracking ◽  
Time Control ◽  
Sliding Manifold

This paper considers the problem of finite-time output tracking for a class of nonautonomous nonlinear fractional-order (FO) systems in the presence of model uncertainties and external disturbances. The finite-time control methods indicate better properties in terms of robustness, disturbance rejection, and settling time. Thus, design of a robust nonsingular controller for finite-time output tracking of a time-varying reference signal is considered in this paper, and a novel FO nonsingular terminal sliding mode controller (TSMC) is designed, which can conquer the uncertainties and guarantees the finite-time convergence of the system output toward the desired time-varying reference signal. For this purpose, an appropriate nonsingular terminal sliding manifold is designed, where maintaining the system's states on this manifold leads to finite-time vanishing of error signal (i.e., ensures the finite-time occurrence of both reaching and sliding phases). Moreover, by tacking the fractional derivative of the sliding manifold, the convergence of system's trajectories into the terminal sliding manifold in a finite time is proven, and the convergence time is estimated. Finally, in order to verify the theoretical results, the proposed method is applied to an FO model of a horizontal platform system (FO-HPS), and the computer simulations show the efficiency of the proposed method in finite-time output tracking.

Robust time-varying output tracking control in the presence of actuator saturation

2016 ◽  
Vol 40 (1) ◽  
pp. 61-70 ◽  
Author(s):  
Tahereh Binazadeh ◽  
Majid Bahmani
Keyword(s):  
Control Method ◽  
Actuator Saturation ◽  
Sliding Mode ◽  
Reference Signal ◽  
Time Varying ◽  
Nonlinear Feedback ◽  
Composite Nonlinear Feedback ◽  
Output Tracking ◽  
Output Tracking Control ◽  
Feedback Control Method

This paper considers the problem of output tracking of a time-varying reference signal for a class of uncertain systems in the presence of actuator saturation. To achieve this capability, a new controller is proposed by robustifying the generalized composite nonlinear feedback control method with the integral sliding mode controller. Since the proposed controller may be saturated, a precise analysis is done to show its robust performance despite the presence of actuator saturation and model uncertainties. For this purpose, a theorem is given and proved that guarantees the robust output tracking via the proposed control law for three different cases of the saturation function and it is shown that even if the control signal is saturated, the proposed controller achieves output tracking of the time-varying reference signal. Also, in order to show the applicability of the proposed controller, it is applied on two practical systems, the XY-table and inertia wheel inverted pendulum. Computer simulations verify the theoretical results and also display the effective performance of the proposed controller.

scholarly journals Performance Output Tracking for a One-Dimensional Wave-Heat Cascade System with Unmatched Disturbance

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Yulong Liu
Keyword(s):  
Numerical Simulations ◽  
Reference Signal ◽  
Output Regulation ◽  
Error Signal ◽  
Cascade System ◽  
One Dimensional ◽  
Output Tracking ◽  
Control Feedback ◽  
Output Regulation Problem ◽  
Dimensional Wave

The objective of this paper is to solve the performance output regulation problem for a wave-heat cascade system with unmatched disturbance. Applying the series expansion, the auxiliary trajectory for the cascade system is constructed and the unmatched disturbance is rejected. Meanwhile, the controller and observer only based on error signal are designed, and the performance output regulation problem is solved. Under the control feedback, the performance output can track the reference signal, and the regulation error goes to zero asymptotically. Finally, some numerical simulations are presented for illustration.

scholarly journals Theoretical Design and Experimental Validation of a Nonlinear Controller for Energy Storage System Used in HEV

2020 ◽  
Vol 11 (3) ◽  
pp. 49
Author(s):  
Zakariae El Idrissi ◽  
Hassan El Fadil ◽  
Fatima Zahra Belhaj ◽  
Abdellah Lassioui ◽  
Mostapha Oulcaid ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hybrid Electric Vehicles ◽  
Sliding Mode ◽  
Formal Analysis ◽  
Storage System ◽  
Reference Signal ◽  
Energy Storage System ◽  
Power Converter ◽  
Nonlinear Controller ◽  
The Stability

This work presented a nonlinear control for a reversible power buck–boost converter (BBC) in order to control energy storage in a supercapacitor (SC) used in hybrid electric vehicles (HEV). The aim was to control a power converter in order to satisfy the following two requirements: (i) perfect tracking of SC current to its reference signal and (ii) asymptotic stability of the closed-loop system. The two objectives were achieved using an integral sliding mode control. In order to validate the proposed approach, an experimental prototype was built. The controller was integrated into dSPACE prototyping systems using the DS1202 card. It was clearly shown, using formal analysis, simulation, and experimental results, that the designed controller metall the objectives, namely, the stability of the system and the control of the current at its reference.

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