Zero Average Dynamic Controller for Speed Control of DC Motor

This paper presents the use of the buck converter with Zero Average Dynamics to control the speed of a permanent magnet direct current motor. For this objective, we consider a fourth-order nonlinear model that describes the system’s dynamics and tests different scenarios to determine how the direct current motor responds. The results show a robust speed tracking performance of the direct current motor under the reference signal and controller parameter changes and disturbances in the load torque. A non-saturated duty cycle with fixed commutation frequency is obtained in the power supply of the DC motor, and a low steady-state value of the speed tracking error is achieved in both experimental and simulation results. In summary, the effectiveness of the Zero Average Dynamics control strategy for high order systems was experimentally proved.

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Adaptive sliding tracking control for nonlinear uncertain robotic systems with unknown actuator nonlinearities

Robotica ◽

10.1017/s0263574721001776 ◽

2021 ◽

pp. 1-20

Author(s):

Shubo Liu ◽

Guoquan Liu ◽

Shengbiao Wu

Keyword(s):

Control Problem ◽

Prior Knowledge ◽

Control Strategy ◽

Tracking Control ◽

Disturbance Observer ◽

Tracking Error ◽

Small Neighborhood ◽

Robotic Systems ◽

Actuator Nonlinearities ◽

Simulation Results

Abstract This study is concerned with the tracking control problem for nonlinear uncertain robotic systems in the presence of unknown actuator nonlinearities. A novel adaptive sliding controller is designed based on a robust disturbance observer without any prior knowledge of actuator nonlinearities and system dynamics. The proposed control strategy can guarantee that the tracking error eventually converges to an arbitrarily small neighborhood of zero. Simulation results are included to demonstrate the effectiveness and superiority of the proposed strategy.

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Satellite formation keeping using differential lift and drag under J2 perturbation

Aircraft Engineering and Aerospace Technology ◽

10.1108/aeat-06-2015-0168 ◽

2017 ◽

Vol 89 (1) ◽

pp. 11-19 ◽

Cited By ~ 5

Author(s):

Xiaowei Shao ◽

Mingxuan Song ◽

Jihe Wang ◽

Dexin Zhang ◽

Junli Chen

Keyword(s):

Control Strategy ◽

Tracking Error ◽

Flat Plates ◽

Satellite Formation ◽

Content Type ◽

Small Satellites ◽

J2 Perturbation ◽

Simulation Results ◽

Lift And Drag ◽

Formation Keeping

Purpose The purpose of this paper is to present a method to achieve small satellite formation keeping operations by using the differential lift and drag to control the drift caused by J2 perturbation in circular or near-circular low earth orbits (LEOs). Design/methodology/approach Each spacecraft is equipped with five large flat plates, which can be controlled to generate differential accelerations. The aerodynamic lift and drag acting on a flat plate is calculated by the kinetic theory. To maintain the formation within tracking error bounds in the presence of J2 perturbation, a nonlinear Lyapunov-based feedback control law is designed. Findings Simulation results demonstrate that the proposed method is efficient for the satellite formation keeping and better accuracy advantage in comparison with classical approaches via the fixed maximum differential aerodynamic acceleration. Research limitations/implications Because the aerodynamic force will reduce drastically as the orbital altitude increases, the formation keeping control strategy for small satellites presented in this paper should be limited to the scenarios when satellites are in LEO. Practical implications The formation keeping control method in this paper can be applied to solve satellite formation keeping problem for small satellites in LEO. Originality/value This paper proposes a Lyapunov control strategy for satellite formation keeping considering both lift and drag forces, and simulation results show better performance with high accuracy under J2 perturbation.

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Bat Algorithm Based an Adaptive PID Controller Design for Buck Converter Model

Journal of Engineering ◽

10.31026/j.eng.2020.07.05 ◽

2020 ◽

Vol 26 (7) ◽

pp. 62-82

Author(s):

Luay Thamir Rasheed

Keyword(s):

Control System ◽

Optimization Algorithm ◽

Pid Controller ◽

Tracking Error ◽

Bat Algorithm ◽

Input Voltage ◽

Buck Converter ◽

Control Action ◽

On Line ◽

Simulation Results

The aim of this paper is to design a PID controller based on an on-line tuning bat optimization algorithm for the step-down DC/DC buck converter system which is used in the battery operation of the mobile applications. In this paper, the bat optimization algorithm has been utilized to obtain the optimal parameters of the PID controller as a simple and fast on-line tuning technique to get the best control action for the system. The simulation results using (Matlab Package) show the robustness and the effectiveness of the proposed control system in terms of obtaining a suitable voltage control action as a smooth and unsaturated state of the buck converter input voltage of ( ) volt that will stabilize the buck converter system performance. The simulation results show also that the proposed control system when compared with the other controllers results has the capability of minimizing the rising time to ( sec) and the settling time to ( sec) in the transient response and minimizing the voltage tracking error of the system output to ( ) volt at the steady state response. Furthermore, the number of fitness evaluations is decreased.

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Improvement of the Electrical Network Stability by Using a Renewable Distributed Generator

Handbook of Research on New Solutions and Technologies in Electrical Distribution Networks - Advances in Computer and Electrical Engineering ◽

10.4018/978-1-7998-1230-2.ch005 ◽

2020 ◽

pp. 78-103

Author(s):

Youssef Krim ◽

Saber Krim ◽

Mohamed Faouzi Mimouni

Keyword(s):

Control Strategy ◽

Power Supply ◽

Storage System ◽

Electrical Network ◽

Distributed Generator ◽

Wind Generator ◽

Control Scheme ◽

Allowable Range ◽

Simulation Results ◽

Bus Voltage

In this chapter, a control strategy for a Renewable Distribution Generator (RDG) operates in grid-connected and standalone mode is suggested. This RDG is made up of a wind generator associated with a Super-Capacitors (SC) considered as a storage system. The study investigates a control scheme for RDG integrated into power electrical system to maintain the voltage and the frequency of the grid in an allowable range and to ensure the continuity of power supply in case of grid faults. The proposed control strategy has three parts: a vector control of the wind generator to extract the maximum power; the control of the DC bus voltage by inserting the SC; and a droop control loop proposed to ensure the grid stability. The simulation results demonstrate the reliability of the control system.

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Model reference signal adaptive control of industrial direct-current motor drives

[1991 Proceedings] 6th Mediterranean Electrotechnical Conference ◽

10.1109/melcon.1991.161968 ◽

2002 ◽

Cited By ~ 4

Author(s):

P. Crnosija ◽

J.A. Bortsov ◽

N.D. Polyakhov ◽

V.E. Kuznetsov ◽

Z. Kovacic ◽

...

Keyword(s):

Adaptive Control ◽

Direct Current ◽

Reference Signal ◽

Motor Drives ◽

Model Reference ◽

Direct Current Motor

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Sensorless Load Torque Estimation and Passivity Based Control of Buck Converter Fed DC Motor

The Scientific World JOURNAL ◽

10.1155/2015/132843 ◽

2015 ◽

Vol 2015 ◽

pp. 1-15 ◽

Cited By ~ 14

Author(s):

S. Ganesh Kumar ◽

S. Hosimin Thilagar

Keyword(s):

Tracking Error ◽

Output Feedback Control ◽

Algebraic Approach ◽

Dc Motor ◽

Buck Converter ◽

Load Torque ◽

Constant Type ◽

Reduced Order Observer ◽

Passivity Based Control ◽

Error Dynamics

Passivity based control of DC motor in sensorless configuration is proposed in this paper. Exact tracking error dynamics passive output feedback control is used for stabilizing the speed of Buck converter fed DC motor under various load torques such as constant type, fan type, propeller type, and unknown load torques. Under load conditions, sensorless online algebraic approach is proposed, and it is compared with sensorless reduced order observer approach. The former produces better response in estimating the load torque. Sensitivity analysis is also performed to select the appropriate control variables. Simulation and experimental results fully confirm the superiority of the proposed approach suggested in this paper.

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A torque control strategy of brushless direct current motor with current observer

2015 IEEE International Conference on Mechatronics and Automation (ICMA) ◽

10.1109/icma.2015.7237501 ◽

2015 ◽

Cited By ~ 4

Author(s):

Long Zhao ◽

Xiaobin Zhang ◽

Junhong Ji

Keyword(s):

Direct Current ◽

Control Strategy ◽

Torque Control ◽

Direct Current Motor ◽

Torque Control Strategy ◽

Brushless Direct Current Motor

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Modified PWM Technique for Harmonic Reduction

ISRN Electronics ◽

10.5402/2012/917897 ◽

2012 ◽

Vol 2012 ◽

pp. 1-8 ◽

Cited By ~ 6

Author(s):

Alireza Hoseinpour ◽

Reza Ghazi

Keyword(s):

Control Strategy ◽

Pulse Width ◽

Pulse Width Modulation ◽

Reference Signal ◽

Space Vector Modulation ◽

Shunt Active Filter ◽

Harmonic Reduction ◽

Reference Signals ◽

Simulation Results ◽

Vector Modulation

This paper presents a Shunt Active Filter (SAF) based on the Variable Index Pulse Width Modulation approach. In the proposed method of Pulse Width Modulation (PWM), the triangular wave is derived by integration of the reference signals. This method introduces two basic advantages; the first one is that the triangular signal contains the information of the signal to be obtained in output and the second advantage is that its amplitude is varied in proportion to the amplitude of the reference signal. Therefore, in this PWM method, the modulation index is varied according to the variation of the reference signal, so it is termed as Variable Index Pulse Width Modulation. In order to demonstrate the validity of the proposed method, the obtained simulation results are compared with results of the Space Vector Modulation (SVM) approach. Furthermore, it is shown that in the case of nonsinusoidal voltages, the SAF with the proposed control strategy can provide the filtering action. This method is quite easy to implement and requires lower circuitry. The results show that the proposed method can satisfy the IEEE-519 standard regarding the reduction of harmonics.

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Modelling and simulation of a series wound direct current motor using ANSYS

MATEC Web of Conferences ◽

10.1051/matecconf/201818402015 ◽

2018 ◽

Vol 184 ◽

pp. 02015

Author(s):

István Kovács ◽

Kornél Sarvajcz

Keyword(s):

Direct Current ◽

Geometric Model ◽

Dc Motor ◽

Modelling And Simulation ◽

Geometry Model ◽

Direct Current Motor

In this paper we will discuss the process of making the model of a series wound DC motor and performing simulation and analysis using the ANSYS products. The geometry model was done in RMXprt, and the electromagnetics simulation in MAXWELL. Using the data acquired from those analyses a thermodynamical simulation was also done on the geometric model.

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