Fa
  • Ph.D. (2011)

    Control engineering

    , Tarbiat Modares University,

  • M.Sc. (2005)

    Control engineering

    , Tarbiat Modares University,

  • B.Sc. (2002)

    Electrical Engineering - Electronics

    , Urmia University,

  • IoT & IoH
  • Regenerative medicine and personal medicine
  • Systems Biology
  • Robust Control
  • Convex Optimization
  • Process Control
  • Linear Matrix Inequalities
  • Systems Identification
  • IoH Tele med Lab

    Research field: From Sensor Signals to Health-related Data, From Health-related Data to Advanced Diagnosis Insights

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  • Advanced Control Lab

    Research field: Optimization and classic control: Robust methods, convex optimization, Complex Systems, ...

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  • Geneocell and Control

    Research field: Designing and producing diagnostic and research kits based on AI and systems Biology

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Mahdi Sojoodi received the B.Sc. degree in electrical engineering from Urmia University in 2002, and the M.Sc. and Ph.D. degrees in electrical engineering from Tarbiat Modares University, Tehran, Iran in 2005 and 2010 respectively. He joined Tarbiat Modares University in 2011 where he is teaching control theory and optimization courses. His research interests are in classic control and optimization applied to multi-agent and complex systems, systems biology, health control, syber-physical systems, and emerging multidisciplinary areas.

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Curriculum Vitae (CV)

Constrained multivariable dynamic matrix control for a class of fractional-order system

Mohammad Amin Rabiei, Mahdi Sojoodi, Pouya Badri
Conference Paper2021 7th International Conference on Control, Instrumentation and Automation (ICCIA) , 2021 February 23, {Pages 06-Jan }

Abstract

The aim of this paper is to control a fractional-order system with model predictive controller by using numerical calculations. In this article, we propose a numerical method based on the Mittag-Leffler function for obtaining the step response of the fractional-order system, then a dynamic matrix controller (DMC) is designed for a multivariate fractional-order system, which is a two-input and two-output system to show the effect of the controller. To perform better tracking and small overshoot the constrained DMC is used. Constraints are based on limiting the outputs and control efforts. The numerical calculations and the controllers design are developed using MATLAB tool. Finally, it is shown that a fractional-order system can be controlle

Numerical Study on the Complete Separation of Blood Cells using the Integrated Dielectrophoretic-Photophoretic Method in a New Microchannel

O Zahedi Siani, M Zabetian Toroghi, M Sojoodi, M Movahedin
Journal Paper , , {Pages }

Abstract

Blood Particle Separation Using Dielectrophoresis in A Novel Microchannel: A Numerical Study.

O Siani Zahedi, Mahdi Sojoodi, M Targhi Zabetian, MANSOUREH Movahedin
Journal PaperCell journal , Volume 22 , Issue 2, 2020 July , {Pages 218-226 }

Abstract

Objective: We present a four-branch model of the dielectrophoresis (DEP) method that takes into consideration the inherent properties of particles, including size, electrical conductivity, and permittivity coefficient. By using this model, bioparticles can be continuously separated by the application of only a one-stage separation process. Materials and Methods: In this numerical study, we based the separation process on the differences in the particle sizes. We used the various negative DEP forces on the particles caused by the electrodes to separate them with a high efficiency. The particle separator could separate blood cells because of their different sizes. Results: Blood cells greater than 12 μm were guided to a special branch, which

Dielectrophoretic separation of monocytes from cancer cells in a microfluidic chip using electrode pitch optimization

Omid Zahedi Siani, Mohammad Zabetian Targhi, Mahdi Sojoodi, Mansoureh Movahedin
Journal PaperBioprocess and Biosystems Engineering , 2020 April 23, {Pages 14-Jan }

Abstract

This study proposes a microfluidic device capable of separating monocytes from a type of cancer cell that is called T-cell acute lymphoblastic leukemia (RPMI-8402) in a continuous flow using negative and positive dielectrophoretic forces. The use of both the hydrodynamic and dielectrophoretic forces allows the separation of RPMI-8402 from monocytes based on differences in their intrinsic electrical properties and sizes. The specific crossover frequencies of monocytes and RPMI-8402 cells have been obtained experimentally. The optimum ranges of electrode pitch-to-channel height ratio at the cross sections with different electrode widths have been generally calculated by numerical simulations of the gradients of the electric field intensities

A novel LMI-based Method for Robust Stabilization of Fractional-order Interval Systems with

Pouya Badri, Mahdi Sojoodi
Journal PaperarXiv preprint arXiv:2004.00392 , 2020 March 30, {Pages }

Abstract

This paper deals with the problem of robust dynamic output feedback stabilization of interval fractional-order linear time invariant (FO-LTI) systems with the fractional order . In this study, a new formulation based on the null-space analysis of the system matrices is proposed using linear matrix inequalities (LMIs). The applied uncertain model is the most complete model of linear interval systems, in which all of the systems matrices are interval matrices. A robust dynamic output feedback controller is designed that asymptotically stabilizes the interval FO-LTI system, where no limiting constraint is assumed on the state space matrices of the uncertain system. Eventually, a numerical example with simulations is presented to demonstrate th

Blood Particle Separation Using Dielectrophoresis in A Novel Microchannel: A Numerical Study.

Omid Zahedi Siani, Mahdi Sojoodi, Mohammad Zabetian Targhi, Mansoureh Movahedin
Journal PaperCell Journal (Yakhteh) , Volume 22 , Issue 2, 2020 July 1, {Pages }

Abstract

Objective: We present a four-branch model of the dielectrophoresis (DEP) method that takes into consideration the inherent properties of particles, including size, electrical conductivity, and permittivity coefficient. By using this model, bioparticles can be continuously separated by the application of only a one-stage separation process.Materials and Methods: In this numerical study, we based the separation process on the differences in the particle sizes. We used the various negative DEP forces on the particles caused by the electrodes to separate them with a high efficiency. The particle separator could separate blood cells because of their different sizes.Results: Blood cells greater than 12 μm were guided to a special branch, which i

Blood Particle Separation Using Dielectrophoresis in A Novel Microchannel: A Numerical Study

OZ Siani, M Sojoodi, MZ Targhi, M Movahedin
Journal Paper , , {Pages }

Abstract

LMI-based robust stability and stabilization analysis of fractional-order interval systems with time-varying delay

Pouya Badri, Mahdi Sojoodi
Journal PaperarXiv preprint arXiv:1909.08415 , 2019 September 17, {Pages }

Abstract

This paper investigates the robust stability and stabilization analysis of interval fractional-order systems with time-varying delay. The stability problem of such systems is solved first, and then using the proposed results a stabilization theorem is also included, where sufficient conditions are obtained for designing a stabilizing controller with a predetermined order, which can be chosen to be as low as possible. Utilizing efficient lemmas, the stability and stabilization theorems are proposed in the form of LMIs, which is more suitable to check due to various existing efficient convex optimization parsers and solvers. Finally, two numerical examples have shown the effectiveness of our results.

Resilient fixed-order distributed dynamic output feedback load frequency control design for interconnected multi-area power systems

Ali Azarbahram, Amir Amini, Mahdi Sojoodi
Journal PaperIEEE/CAA Journal of Automatica Sinica , Volume 6 , Issue 5, 2019 September 3, {Pages 1139-1151 }

Abstract

The paper proposes a novel H-∞ load frequency control ( LFC ) design method for multi-area power systems based on an integral-based non-fragile distributed fixed-order dynamic output feedback ( DOF ) tracking-regulator control scheme. To this end, we consider a nonlinear interconnected model for multi-area power systems which also include uncertainties and time-varying communication delays. The design procedure is formulated using semi-definite programming and linear matrix inequality ( LMI ) method. The solution of the proposed LMIs returns necessary parameters for the tracking controllers such that the impact of model uncertainty and load disturbances are minimized. The proposed controllers are capable of receiving all or part of subsys

Stability and stabilization of fractional‐order systems with different derivative orders: An LMI approach

Pouya Badri, Mahdi Sojoodi
Journal PaperAsian Journal of Control , 2019 September , {Pages }

Abstract

Stability and stabilization analysis of fractional‐order linear time‐invariant (FO‐LTI) systems with different derivative orders is studied in this paper. First, by using an appropriate linear matrix function, a single‐order equivalent system for the given different‐order system is introduced by which a new stability condition is obtained that is easier to check in practice than the conditions known up to now. Then the stabilization problem of fractional‐order linear systems with different fractional orders via a dynamic output feedback controller with a predetermined order is investigated, utilizing the proposed stability criterion. The proposed stability and stabilization theorems are applicable to FO‐LTI systems with diffe

Robust stabilisation of fractional-order interval systems via dynamic output feedback: an LMI approach

Pouya Badri, Mahdi Sojoodi
Journal PaperInternational Journal of Systems Science , 2019 June 6, {Pages 13-Jan }

Abstract

This paper addresses the problem of robust dynamic output stabilisation of FO-LTI interval systems with the fractional order , in terms of linear matrix inequalities (LMIs). Our purpose is to design a robust dynamic output feedback controller that asymptotically stabilises interval fractional-order linear time-invariant (FO-LTI) systems. Sufficient conditions are obtained for designing a stabilising controller with a predetermined order, which can be chosen to be as low as possible. The LMI-based procedures of designing robust stabilising controllers are preserved in spite of the complexity of assuming the most complete model of linear controller, with direct feedthrough parameter. Finally, some numerical examples with simulations are prese

Consensus of fractional-order multi-agent systems: Matrix inequality approach

Elyar Zavary, Mahdi Sojoodi
Journal PaperarXiv preprint arXiv:1906.02139 , 2019 June 4, {Pages }

Abstract

This paper investigates the robust stabilisation of a class of fractional-order non-linear systems via fixed-order dynamic output feedback controller in terms of linear matrix inequalities (LMIs). The systematic stabilisation algorithm design for low-order controller based on direct Lyapunov approach is proposed. In the presented algorithm the conditions containing the bilinear variables are decoupled into separate conditions without imposing equality constraints or considering an iterative search of the controller parameters. There is no any limiting constraint on the state space matrices and also we assumed the most complete output feedback controller. Simulations results are given to approve the effectiveness and the straightforwardness

Leader Following Distributed Formation tracking in Nonlinear Fractional-Order Multi-Agent Systems by using Adaptive integral Sliding Mode Approach

Vahid Momeni, Mahdi Sojoodi, Davood Abbasi, Ehsan Salajegheh
Conference Paper2019 27th Iranian Conference on Electrical Engineering (ICEE) , 2019 April 30, {Pages 1170-1175 }

Abstract

The mainspring of this paper is a consensus tracking and a distributed formation in multi-agent systems of fractional order with a leader following strategy. Based on the sliding mode control method, the distributed controller is designed to access consensus and formation in multi-agent systems of fractional order with a leader following strategy. The sliding surfaces is defined as the term of the integral of the fractional error. It has been shown that, if the followering dynamics are affected by disturbances, The sliding mode controller is still valid. In the following, the controller stability is discussed and, finally, several simulations are presented to illustrate the controller's performance.

Fabrication of conductive fibrous scaffold for photoreceptor differentiation of mesenchymal stem cell

Soraya Nekouian, Mahdi Sojoodi, Samad Nadri
Journal PaperJournal of cellular physiology , 2019 February 4, {Pages }

Abstract

Conductive nanofibrous scaffolds with that can conduct electrical current have a great potential in neural tissue engineering. The purpose of this study was to survey effects of electrical stimulation and polycaprolactone/polypyrrole/multiwall carbon nanotube (PCL/PPY/MWCNTs) fibrous scaffold on photoreceptor differentiation of trabecular meshwork mesenchymal stem cells (TM‐MSCs). PCL/PPY/MWCNTs scaffold was made by electrospinning method. TM‐MSCs were seeded on PCL/PPY/MWCNTs scaffold and stimulated with a potential of 115 V/m. Scanning electron microscopy, transmission electron microscopy, and FT‐IR were used to evaluate the fabricated scaffold. Immunofluorescence and quantitative real‐time polymerase chain reaction were used t

Dynamic robust stabilization of fractional-order linear systems with nonlinear uncertain parameters: An LMI approach

Pouya Badri, Mahdi Sojoodi
Journal PaperarXiv preprint arXiv:1902.01238 , 2019 February 1, {Pages }

Abstract

This paper considers the problem of robust stability and stabilization for linear fractional-order system with nonlinear uncertain parameters, with fractional order 0< a< 2. A dynamic output feedback controller, with predetermined order, for asymptotically stabilizing such uncertain fractional-order systems is designed. The derived stabilization conditions are in LMI form. Simulation results of two numerical examples illustrate that the proposed sufficient theoretical results are applicable and effective for tackling robust stabilization problems. Keywords: Fractional-order system, nonlinear uncertain parameters, linear matrix inequality (LMI), robust stabilization, dynamic output feedback.

Conductive electrospun scaffolds with electrical stimulation for neural differentiation of conjunctiva mesenchymal stem cells

Ali Rahmani, Samad Nadri, Habib Sayed Kazemi, Yousef Mortazavi, Mahdi Sojoodi
Journal PaperArtificial organs , 2019 January 23, {Pages }

Abstract

An electrical stimulus is a new approach to neural differentiation of stem cells. In this work, the neural differentiation of conjunctiva mesenchymal stem cells (CJMSCs) on a new 3D conductive fibrous scaffold of silk fibroin (SF) and reduced graphene oxide (rGo) were examined. rGo (3.5% w/w) was dispersed in SF‐acid formic solution (10% w/v) and conductive nanofibrous scaffold was fabricated using the electrospinning method. SEM and TEM microscopies were used for fibrous scaffold characterization. CJMSCs were cultured on the scaffold and 2 electrical impulse models (Current 1:115?V/m, 100‐Hz frequency and current 2:115?v/m voltages, 0.1‐Hz frequency) were applied for 7?days. Also, the effect of the fibrous scaffold and electrical im

Robust Fixed-order Dynamic Output Feedback Controller Design for Delayed Vehicle Active Suspension System with Polytopic Uncertainty

Pouya Badri, Elyar Zavary, Mahdi Sojoodi
Conference Paper2019 6th International Conference on Control, Instrumentation and Automation (ICCIA) , 2019 October 30, {Pages 06-Jan }

Abstract

In this paper, a fixed-order procedure is presented utilizing convex optimization and linear matrix inequalities (LMIs) to control a quarter car uncertain active suspension system. Our purpose is to design a low-order robust controller that keeps the desired design specifications besides the simplicity of the implementation. In our model, the system is influenced by the non-linear disturbance of the road surface, and the polytopic uncertainty model for state matrices of the system is utilized to cover the uncertainties of the model and the delay caused by the dynamic of the system. In this paper, a specific form of a positive definite matrix is used to overcome the complexity of rank minimization constraints. The proposed controller is cons

Model Predictive Control for a 3D Pendulum on SO (3) Manifold Using Convex Optimization

Sara Mansourinasab, Mahdi Sojoodi, Seyed Reza Moghadasi
Journal PaperControl and Optimization in Applied Mathematics , Volume 4 , Issue 2, 2019 December 1, {Pages 69-80 }

Abstract

Conventional model predictive control (MPC) methods are usually implemented to systems with discrete-time dynamics laying on smooth vector space . In contrast, the configuration space of the majority of mechanical systems is not expressed as Euclidean space. Therefore, the MPC method in this paper has developed on a smooth manifold as the configuration space of the attitude control of a 3D pendulum. The Lie Group Variational Integrator (LGVI) equations of motion of the 3D pendulum have been considered as the discrete-time update equations since the LGVI equations preserve the group structure and conserve quantities of motion. The MPC algorithm is applied to the linearized dynamics of the 3D pendulum according to its LGVI equations around th

Formation Tracking of Fractional-Order Multi-Agent Systems by Using Robust Sliding Mode Approach

Vahid Momeni, Mahdi Sojoodi, Vahid Johari Majd
Journal PaperModares Mechanical Engineering , Volume 18 , Issue 8, 2018 December 15, {Pages 30-36 }

Abstract

The main purpose of this paper is to the distributed formation tracking for fractional order multi agent systems with the leader-follower approach. First, it discusses the Lyapunov candidate function used to check the stability of the controlled system. The introduced candidate function is based on the properties of the matrix representing the desired system graph of the system. In this phase, the Lyapunov direct method is used to determine the stability of fractional order systems. Then, using sliding mode control, a decentralized controller design for tracking in fractional multi agent systems is presented in which it introduces and verifies the introduced control inputs. In the model, the input system is also considered as a disturbance

A class of non-linear fractional-order system stabilisation via fixed-order dynamic output feedback controller

Elyar Zavary, Mahdi Sojoodi
Journal PaperarXiv preprint arXiv:1809.06365 , 2018 September 15, {Pages }

Abstract

This paper investigates the robust stabilisation of a class of fractional-order non-linear system with positive real uncertainty via fixed-order dynamic output feedback controller in terms of linear matrix inequalities (LMIs). the systematic stabilisation algorithm design for low-order controller based on direct Lyapunov approach is proposed for uncertain fractional-order systems. In the presented algorithm the conditions containing the bilinear variables are decoupled into separate conditions without imposing equality constraints or considering an iterative search of the controller parameters. There is no any limiting constraint on state space matrices and also we assumed the most complete output feedback controller. Simulations results ar

Current Teaching

  • MS.c.

    Convex Optimization

  • MS.c.

    Convex Optimization

  • MS.c.

    Building Intelligent Management Systems I

Teaching History

  • MS.c.

    Advanced Process Control

  • MS.c.

    Intelligent Buildings

  • 2020
    Abdizade, Rezvan
    Design and Construction of Robotic Router Vacuum Cleaner Connected to Smart Home Network by Adaptive Control Method
  • 2021
    Khademi, Peiman
  • 2021
    Shahpouri, Alireza
    Data not found
  • Director of incubators

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