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Des.gn of Robus. Power s.s.em s.abilizer Bas.d on Particle s.arm Optimization

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Circuits.and s.s.ems 2012年第1期3卷 82-89页

作者： magdi s. mahmoud His.am M. s.liman 不详

In this.paper, we examine the problem of des.gning power s.s.em s.abilizer (Ps.). A new technique is.developed us.ng particle s.arm optimization (Ps.) combined with linear matrix inequality (LMI). The main feature of Ps., not s.icking into a local minimum, is.us.d to eliminate the cons.rvativenes. of des.gning a s.atic output feedback (s.F) s.abilizer within an iterative s.lution of LMIs. The technique is.further extended to guarantee robus.nes. agains. uncertainties.wherein power s.s.ems.operation is.changing continuous.y due to load changes. Numerical s.mulation ahs.illus.rated the utility of the developed technique.

关键词： Dynamic s.ability Power s.s.em s.abilizer s.atic Output Feedback Particle s.arm Optimization Linear Matrix Inequality

Optimal Control of Wind Turbines.under Is.anded Operation

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Intelligent Control and Automation 2017年第1期8卷 1-14页

作者： magdi s. mahmoud Mojeed O. Oyedeji s.s.ems.Engineering Department King Fahd University of Petroleum and Minerals Dhahran KSA

In this.paper, an optimal control s.heme for wind turbine output torque and power regulation under the influence of wind dis.urbances.is.pres.nted. The s.s.em cons.dered is.a dynamic mechanical-bas.d model with pitch and generator torque actuators.for controlling the pitch and generator torque. The performance of linear matrix inequality (LMI) formalis. of linear quadratic regulator (LQR);linear quadratic regulator with integral action (LQRI) and model predictive control (MPC) were compared in res.ons. to a s.ep change in wind dis.urbance. It is.s.own by Matlab s.mulation that the LQRI outperformed both LQR and MPC controllers.

关键词： Wind Turbine Linear Quadratic Regulator Linear Quadratic Regulator with Integral Action Model Predictive Control Output Torque Power Regulation

s.lf-Tuning Control for MIMO Network s.s.ems

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Journal of s.gnal and Information Proces.ing 2012年第2期3卷 154-160页

作者： magdi s. mahmoud Matas. M. Has.an Hamid s.s.ems.Engineering Department King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia

The advances.in MIMO s.s.ems.and networking technologies.introduced a revolution in recent times. es.ecially in wireles. and wired multi-cas. (multi-point-to-multi-point) trans.is.ion field. In this.work, the dis.ributed vers.ons.of s.lf-tuning proportional integral plus.derivative (s.ID) controller and s.lf-tuning proportional plus.integral (s.I) controller are des.ribed. An explicit rate feedback mechanis. is.us.d to des.gn a controller for regulating the s.urce rates.in wireles. and wired multi-cas. networks. The control parameters.of the s.ID and s.I controllers.are determined to ens.re the s.ability of the control loop. s.mulations.are carried out with wireles. and wired multi-cas. models. to evaluate the performance of the s.ID and s.I controllers.and the ens.ing res.lts.s.ow that s.ID s.heme yields.better performance than s.I s.heme;however, it requires.more computing time and central proces.ing unit (CPU) res.urces.

关键词： MIMO s.s.ems Wireles. Networks s.lf-Tuning Control Multi-Cas. Networks

Fundamental Is.ues.in Networked Control s.s.ems

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IEEE/CAA Journal of Automatica s.nica 2018年第5期5卷 902-922页

作者： magdi s.mahmoud a Mutaz M.Hamdan the s.s.ems.engineering department king fahd university of petroleum and minerals

Abs.ract--This.paper provides.a s.rvey on modeling and theories.of networked control s.s.ems.（NCs.. In the firs. part, modeling of the different types.of imperfections.that affect NCs.is.dis.us.ed. Thes. imperfections.are quantization errors. packet dropouts. variable s.mpling/trans.is.ion intervals. vari- able trans.is.ion delays. and communication cons.raints. Then follows.in the s.cond part a pres.ntation of s.veral theories.that have been applied for controlling networked s.s.ems. Thes. theories.include： input delay s.s.em approach, Markovian s.s.em approach, s.itched s.s.em approach, s.ochas.ic s.s.em approach, impuls.ve s.s.em approach, and predictive control approach. In the las. part, s.me advanced is.ues.in NCs.including decentral- ized and dis.ributed NCs. cloud control s.s.em, and co-des.gn of NCs.are reviewed. Index Terms.-Decentralized networked control s.s.ems.（NCs., dis.ributed networked control s.s.ems. network cons.raints. net- worked control s.s.em, quantization, time delays.

关键词： Decentralized networked control s.s.ems.NCs. dis.ributed networked control s.s.ems network cons.raints networked control s.s.em quantization time delays

Dis.ributed H2/H∞ Filter Des.gn for Dis.rete-Time s.itched s.s.ems

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IEEE/CAA Journal of Automatica s.nica 2020年第1期7卷 158-168页

作者： Nezar M.Alyazidi magdi s.mahmoud s.s.ems.Engineering Department King Fahd University for Petroleum and Minerals

This.paper addres.es.an infinite horizon dis.ributed H2/H∞ filtering for dis.rete-time s.s.ems.under conditions.of bounded power and white s.ochas.ic s.gnals. The filter algorithm is.des.gned by computing a pair of gains.namely the es.imator and the coupling. Herein, we implement a filter to es.imate unknown parameters.s.ch that the clos.d-loop multi-s.ns.r accomplis.es.the des.red performances.of the propos.d H2 and H∞ s.hemes.over a finite horizon. A s.itched s.rategy is.implemented to s.itch between the s.ates.once the operation conditions.have changed due to dis.urbances. It is.s.own that the s.ability of the overall filtering-error s.s.em with H2/H∞ performance can be es.ablis.ed if a piecewis.-quadratic Lyapunov function is.properly cons.ructed. A s.mulation example is.given to s.ow the effectivenes. of the propos.d approach.

关键词： Bounded power s.ochas.ic dis.urbance dis.retetime s.s.ems H2/H∞ filtering infinite horizon multi-s.ns.r s.itched s.s.ems

The Interaction between Control and Computing Theories.New Approaches

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International Journal of Automation and computing 2017年第3期14卷 254-274页

作者： magdi s.mahmoud Yuanqing Xia s.s.ems.Engineering Department KFUPM s.hool of Automation Beijing Institute of Technology

Day by day, networked control s.s.em（NCs. methods.have been promoted for dis.ributed clos.d-loop control ***, the integration of control and computing theories.enhanced the development of networked control s.s.ems.through remote control for wide applications.employing the internet. Two further directions.to networked control technology are LeaderFollower s.s.ems.and model predictive control s.s.ems. Cloud control s.s.em is.looked at an extens.on of networked control s.s.ems.NCs. us.ng internet of things.IOT） methodologies. In this.paper, a comprehens.ve literature s.rvey of the new technology of control s.s.ems.application performed on cloud computing is.pres.nted.

关键词： Networked control s.s.em(NCs. cloud control s.s.em network cons.raints.leader-follower s.s.em model predictive control

Robus. Control Des.gn of Wheeled Inverted Pendulum As.is.ant Robot

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IEEE/CAA Journal of Automatica s.nica 2017年第4期4卷 628-638页

作者： magdi s.mahmoud Mohammad T.Nas.r s.s.ems.Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

This.paper examines.the des.gn concept and mobile control s.rategy of the human as.is.ant robot I-PENTAR(inverted pendulum type as.is.ant robot). The motion equation is.derived cons.dering the non-holonomic cons.raint of the twowheeled mobile robot. Different optimal control approaches.are applied to a linearized model of I-PENTAR. Thes. include linear quadratic regulator(LQR), linear quadratic Gaus.ian control(LQG), H_2 control and H_∞ control. s.mulation is.performed for all the approaches.yielding good performance res.lts.

关键词： I-PENTAR robot linear quadratic regulator(LQR) control des.gn model predictive control(MPC) obs.rverbas.d feedback control robus. H_∞ control

Networked Control Approach for Dis.ributed Generation s.s.ems

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IEEE/CAA Journal of Automatica s.nica 2018年第4期5卷 836-851页

作者： magdi s.mahmoud Mohamed s.if Ur Rahman s.s.ems.Engineering Department King Fahd University of Petroleum and MineralsP.O.Box 5067Dhahran 31261Saudi Arabia

Microgrid has.emerged as.an ans.er to growing demand for dis.ributed generation(DG) in power s.s.ems. It contains.s.veral DG units.including microalternator, photovoltaic s.s.em and wind generation. It turns.out that s.s.ained operation relies.on the s.ability of thes. cons.ituent s.s.ems. In this.paper, a microgrid cons.s.ing of microalternator and photovoltaic s.s.em is.modeled as.a networked control s.s.em of s.s.ems.s. s.s.bjected to packet dropouts.and delays. Next, an obs.rverbas.d controller is.des.gned to s.abilize the s.s.em in pres.nce of the aforementioned communication cons.raints.and s.mulation res.lts.are provided to s.pport the control des.gn methodology.

关键词： Microalternator microgrid s.s.ems networked control obs.rver-bas.d controller photovoltaic s.s.ems

LMI Cons.ns.s.Condition for Dis.rete-time Multi-agent s.s.ems

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IEEE/CAA Journal of Automatica s.nica 2018年第2期5卷 509-513页

作者： magdi s.mahmoud Gulam Das.agir Khan s.s.ems.Engineering Department KFUPM E O. Box 5067 Dhahran 31261 Saudi Arabia

This.paper examines.a cons.ns.s.problem in multiagent dis.rete-time s.s.ems. where each agent can exchange information only from its.neighbor agents. A decentralized protocol is.des.gned for each agent to s.eer all agents.to the s.me vector. The des.gn condition is.expres.ed in the form of a linear matrix inequality. Finally, a s.mulation example is.pres.nted and a comparis.n is.made to demons.rate the effectivenes. of the developed methodology.

关键词： Index Terms.Cons.ns.s.algorithms dis.rete-time s.s.ems linear matrix inequalities multi-agent s.s.ems.