scispace - formally typeset
Search or ask a question
Author

Cristina I. Muresan

Other affiliations: Core Laboratories
Bio: Cristina I. Muresan is an academic researcher from Technical University of Cluj-Napoca. The author has contributed to research in topics: PID controller & Control theory. The author has an hindex of 14, co-authored 122 publications receiving 1046 citations. Previous affiliations of Cristina I. Muresan include Core Laboratories.

Papers published on a yearly basis

Papers
More filters
Journal ArticleDOI
TL;DR: In this article, a linear, constrained, multivariable predictive control strategy was proposed to obtain the carbon isotope 13C used widely in medicine and specific industries using a train of three distillation columns.

4 citations

Journal ArticleDOI
TL;DR: In this paper, the authors combine the well-known benefits of fractional calculus in biomedical applications with the intricate tasks revolving around automatic anesthesia, and propose fractional order control algorithms based on an open-source patient simulator that combines hemodynamics and anesthesia in a single customizable framework.

4 citations

Proceedings ArticleDOI
01 Jun 2016
TL;DR: A novel autotuning method for designing fractional order controllers is addressed and the proposed technique is simple and efficient, and the simulation results demonstrate the validity of the design technique.
Abstract: The preferred controller design technique in industrial applications is based on autotuning procedures that do not involve knowledge about an actual mathematical model of the process. In this paper, a novel autotuning method for designing fractional order controllers is addressed. The proposed technique is simple and efficient. Previous research with respect to autotuning methods for fractional order controllers has considered exclusively the case of a single-input-single-output process. However, in this paper, a multivariable case study is preferred. The simulation results demonstrate the validity of the design technique.

4 citations

Proceedings ArticleDOI
22 May 2014
TL;DR: In this paper, a simple control scheme based on active disturbance rejection method is proposed for isotope separation columns with large, variable time delays, which considers the gain uncertainty of the fractional-order plant model as a common disturbance.
Abstract: Isotope separation columns are known as complex, nonlinear systems with large, variable time delays. The control of such a process is a difficult task, in specific literature being proposed complex control algorithms. The main goal of the present paper is to design a simple control scheme based on active disturbance rejection method. For accurate modeling of the plant a fractional-order model is used. The active disturbance rejection control (ADRC) considers the gain uncertainty of the fractional-order plant model as a common disturbance. Using a proper observer will reject it. Simulation results are provided to demonstrate the effectiveness of the proposed method.

4 citations

Journal ArticleDOI
25 Aug 2021
TL;DR: The presented modeling and control methodologies are solidified by real-life experimental data used to validate the veracity of the presented concepts and the robustness of the control strategy is experimentally validated on both Newtonian and non-Newtonian environments.
Abstract: The present work tackles the modeling of the motion dynamics of an object submerged in a non-Newtonian environment. The mathematical model is developed starting from already known Newtonian interactions between the submersible and the fluid. The obtained model is therefore altered through optimization techniques to describe non-Newtonian interactions on the motion of the vehicle by using real-life data regarding non-Newtonian influences on submerged thrusting. For the obtained non-Newtonian fractional order process model, a fractional order control approach is employed to sway the submerged object’s position inside the viscoelastic environment. The presented modeling and control methodologies are solidified by real-life experimental data used to validate the veracity of the presented concepts. The robustness of the control strategy is experimentally validated on both Newtonian and non-Newtonian environments.

4 citations


Cited by
More filters
Journal ArticleDOI

[...]

08 Dec 2001-BMJ
TL;DR: There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.
Abstract: There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality. Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

33,785 citations

Book ChapterDOI
01 Jan 2015

3,828 citations

Journal ArticleDOI
TL;DR: This review investigates its progress since the first reported use of control systems, covering the fractional PID proposed by Podlubny in 1994, and is presenting a state-of-the-art fractionalpid controller, incorporating the latest contributions in this field.

447 citations

01 Jan 2016
TL;DR: Formulas for natural frequency and mode shape is available in the authors' book collection an online access to it is set as public so you can get it instantly.
Abstract: formulas for natural frequency and mode shape is available in our book collection an online access to it is set as public so you can get it instantly. Our book servers hosts in multiple countries, allowing you to get the most less latency time to download any of our books like this one. Kindly say, the formulas for natural frequency and mode shape is universally compatible with any devices to read.

333 citations

Journal ArticleDOI
TL;DR: An aggregate model of EV fleets and improved version of fractional order (FO) controller is provided in all the areas for robust LFC considering bilateral transactions and Numerous simulations are conducted to validate the superiority of the proposed control strategy.
Abstract: Introduction of vehicle-to-grid technology offer electric vehicles (EVs) to participate in different ancillary services under competitive electric market. EVs provide an opportunity to grow new products and services for grid management. Particularly, EVs, which is a new form of distributed energy storage, can be used to compensate the uncontracted power in the local area if the contracts between the market players are violated. This paper presents the participation of EVs for load frequency control (LFC) under deregulated environment along with other conventional sources such as hydro, thermal, and gas turbine units. An aggregate model of EV fleets and improved version of fractional order (FO) controller is provided in all the areas for robust LFC considering bilateral transactions. Flower pollination algorithm, which is one of the new proven nature inspired algorithm employed to choose the optimal parameters of the FO controllers under several scenarios. Numerous simulations are conducted to validate the superiority of the proposed control strategy.

199 citations