Distributed Finite-Time Coordination Control system for Economical Operation of Islanded DC Microgrids

Base on the mathematical model of a common coordinated control system in field of thermal, by analyzing characteristics of the controlled object supercritical once-through boiler coordinated control system, the article puts forward suggestions for improvement, and verifies the results of the analysis by test.

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Research on coordination control system in greenhouse with multi-agent technology

2016 Chinese Control and Decision Conference (CCDC) ◽

10.1109/ccdc.2016.7531296 ◽

2016 ◽

Author(s):

Qi Li ◽

Yifei Chen ◽

Manling Wu ◽

Shangfeng Du ◽

Qiaoxue Dong ◽

...

Keyword(s):

Control System ◽

Agent Technology ◽

Coordination Control ◽

Multi Agent

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A New Control Method for Second-Order Multiple Models Control System Based on Global Sliding Mode

Mathematical Problems in Engineering ◽

10.1155/2018/5709162 ◽

2018 ◽

Vol 2018 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Dan-xu Zhang ◽

Yang-wang Fang ◽

Peng-fei Yang ◽

You-li Wu ◽

Tong-xin Liu

Keyword(s):

Control System ◽

Sliding Mode Control ◽

Finite Time ◽

Sliding Mode ◽

Second Order ◽

Multiple Models ◽

Finite Time Convergence ◽

Mode Control ◽

Global Sliding Mode Control ◽

Control Scheme

This paper proposed a finite time convergence global sliding mode control scheme for the second-order multiple models control system. Firstly, the global sliding surface without reaching law for a single model control system is designed and the tracking error finite time convergence and global stability are proved. Secondly, we generalize the above scheme to the second-order multimodel control system and obtain the global sliding mode control law. Then, the convergent and stable performances of the closed-loop control system with multimodel controllers are proved. Finally, a simulation example shows that the proposed control scheme is more effective and useful compared with the traditional sliding mode control scheme.

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Multidimensional Optimal Droop Control for DC Microgrids in Military Applications

Applied Sciences ◽

10.3390/app8101966 ◽

2018 ◽

Vol 8 (10) ◽

pp. 1966 ◽

Cited By ~ 2

Author(s):

Kaitlyn Bunker ◽

Michael Cook ◽

Wayne Weaver ◽

Gordon Parker

Keyword(s):

Control System ◽

Control Strategy ◽

System Reliability ◽

Droop Control ◽

Hardware In The Loop ◽

Dc Microgrids ◽

Military Applications ◽

Bus Voltage ◽

Solar Resource

Reliability is a key consideration when microgrid technology is implemented in military applications. Droop control provides a simple option without requiring communication between microgrid components, increasing the control system reliability. However, traditional droop control does not allow the microgrid to utilize much of the power available from a solar resource. This paper applies an optimal multidimensional droop control strategy for a solar resource connected in a microgrid at a military patrol base. Simulation and hardware-in-the-loop experiments of a sample microgrid show that much more power from the solar resource can be utilized, while maintaining the system’s bus voltage around a nominal value, and still avoiding the need for communication between the various components.

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The Research on the Visual Obstacle-Avoidance Optimization in Robots Control

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.756-759.372 ◽

2013 ◽

Vol 756-759 ◽

pp. 372-375

Author(s):

Hong Bin Tian

Keyword(s):

Mathematical Model ◽

Control System ◽

Obstacle Avoidance ◽

Visual Information ◽

Structural Model ◽

Three Dimension ◽

Coordination Control ◽

Dimension Space ◽

The Mathematical Model ◽

Very High

In order to increase the movement capability of the robotic visual system in three-dimension space, the paper designs an obstacle-avoidance algorithm based on robotic movement visual by effectively processing the visual information colleted by the robotics. This paper establishes a structural model of coordination control system. The obstacles can be effectively identified and avoided by the obstacle-avoidance theory in the robotics coordination operation. The mathematical model of the obstacle-avoidance algorithm can predict the locations of the obstacles. The experiment proves the proposed algorithm can avoid the obstacles in three-dimension space and the accuracy is very high.

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Decentralized Voltage Regulation in Islanded DC Microgrids Based on a Modified Droop Control using Superimposed AC Voltage

10.36227/techrxiv.16641184.v1 ◽

2021 ◽

Author(s):

Mohammadreza Nabatirad ◽

Reza Razzaghi ◽

Behrooz Bahrani

Keyword(s):

Control System ◽

Load Sharing ◽

Voltage Regulation ◽

Control Technique ◽

Droop Control ◽

Dc Microgrids ◽

Distributed Generator ◽

Voltage Compensation ◽

Terminal Voltage ◽

Unit Output

The conventional droop control is a widely-used technique in load sharing among Distributed Generator (DG) units in islanded DC Microgrids (MGs). This method provides Plug-and-Play (PnP) capability for DG units; however, poor load sharing accuracy and unregulated voltage are two shortcomings of that. This article proposes a novel control system in islanded DC MGs to provide simultaneous regulated voltage and accurate load sharing. The method utilizes a modified droop control technique in a decentralized manner. The proposed control system injects a superimposed AC voltage to the network that carries a frequency proportional to the master DG unit output current. The injected voltage adjusts an added a term to the conventional droop control named as the voltage compensation term in order to cancel voltage changes. This term adjusts terminal voltage of DG units proportional to the frequency of the superimposed AC voltage. The performance of the proposed control system is validated via a set of simulation studies using PLECS, and the experimental results confirm the viability and feasibility of the proposed control system.

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Immersion and invariance adaptive finite-time control of air-breathing hypersonic vehicles

Proceedings of the Institution of Mechanical Engineers Part G Journal of Aerospace Engineering ◽

10.1177/0954410018785491 ◽

2018 ◽

Vol 233 (7) ◽

pp. 2626-2641 ◽

Cited By ~ 1

Author(s):

Chao Han ◽

Zhen Liu ◽

Jianqiang Yi

Keyword(s):

Control System ◽

Finite Time ◽

Control Method ◽

Sliding Mode ◽

Second Order ◽

Hypersonic Vehicles ◽

Terminal Sliding Mode ◽

Air Breathing ◽

Immersion And Invariance ◽

Time Control

In this paper, a novel adaptive finite-time control of air-breathing hypersonic vehicles is proposed. Based on the immersion and invariance theory, an adaptive finite-time control method for general second-order systems is first derived, using nonsingular terminal sliding mode scheme. Then the method is applied to the control system design of a flexible air-breathing vehicle model, whose dynamics can be decoupled into first-order and second-order subsystems by time-scale separation principle. The main features of this hypersonic vehicle control system lie in the design flexibility of the parameter adaptive laws and the rapid convergence to the equilibrium point. Finally, simulations are conducted, which demonstrate that the control system has the features of fast and accurate tracking to command trajectories and strong robustness to parametric and non-parametric uncertainties.

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Finite-Time Nonlinear Observer Design for Uncertain DC Microgrids Feeding Constant Power Loads

10.1109/eeeic/icpseurope51590.2021.9584484 ◽

2021 ◽

Author(s):

Shekoufeh Neisarian ◽

Mohammad Mehdi Arefi ◽

Navid Vafamand ◽

Mohammad S. Javadi ◽

P. S. Joao Catalao

Keyword(s):

Finite Time ◽

Observer Design ◽

Nonlinear Observer ◽

Constant Power ◽

Dc Microgrids ◽

Constant Power Loads

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