Dissertations / Theses on the topic 'Commande automatique – Régulateurs PID'
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Bariani, Jean-Paul. "Conception et réalisation d'un logiciel de CAO en automatique : identification structurelle et commande PID." Nice, 1988. http://www.theses.fr/1988NICE4175.
Full textAlzoni, Yarub. "Conception et réalisation d'un régulateur auto-adaptatif industrialisable." Nancy 1, 1989. http://www.theses.fr/1989NAN10269.
Full textAntonioli, Jean-Charles. "Spécification de lois de commande pour hélicoptères orientée Qualités de Vol." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4333/document.
Full textThis study is in the field of designing helicopter control laws. Designers must tune the gains of these laws in order to meet as much as possible Handling Qualities requirements from ADS-33. This standard translates these requirements in terms of Flying Qualities requirements. Then, we can evaluate the quality of the stability, of the quickness, and of the ability of the machine to follow the inputs from the pilot. Apart from an interactive optimization technique developed at NASA and US Army over the last 40 years, no appropriate method exists to solve this problem. Then, empirical iterative tunings are led. ONERA addresses this issue through a structured methodological approach. The aim of the thesis is to develop this methodology, taking into account two additional constraints compared with the capabilities of usual synthesis methods used in automatics: the capability to deal with the constraints from the control law structures and with the Handling Qualities requirements from the ADS-33 standards. A technique is developed to improve the Flying Qualities using sensitivity studies between gains and criteria. Then, a methodology to initialize the gains is developed, through the creation and the efficient usage of new Flying Qualities-based charts for equivalent simplified models. In order to improve the efficiency of the initial tuning, two additional constraints are taken into account (uncoupling and energy). Thus, a complete full procedure of tuning is proposed: initialization, linear adjustment and non linear adjustment
Mboup, Alioune Badara. "Commande d'un système de production d'énergie électrique multi-sources : application aux sites isolés." Le Havre, 2011. http://www.theses.fr/2011LEHA0022.
Full textThis thesis concerning integration and control of renewable energy sources in systems of power generation and energy storage. The hybrid system studied consists of a wind generator, a diesel generator, photovoltaic panels and lead acid batteries for supplying continuous loads. All these sources are interfaced with the power electronics in aims to maintain the DC bus voltage to a reference value for supplying correctly the load demand. In this study we have done the model of the multisource system by using a hybrid nonlinear state space representation that uses discrete and continuous variables. Discrete variables are the contacts used to connect power converters on the DC bus. Continuous variables represent voltage and current to satisfy the load. We then developed a hierarchical control strategy which is used to regulate the voltage of the DC bus, to adjust the power rate extracted from the sources and to connect or disconnect the converter associated with sources according to criteria of energy availability. The control laws of power converters and the energy transfer management methods are developed from a study of the technological characteristics of different components of the system on one hand and information of the duty cycle value on the other. The duty cycle is a correlation measure between the source and the load. Its variations depend on the power extracted of the source. We showed that it was a priority decision variable in optimization energy of multi-source systems and operations can reduce the necessary instrumentation to control the installation. Following the methodological work, we are realized the power electronic converters and the acquiring system (and measuring). We are also validated our approach with experimental results that show the effectiveness of the strategy proposed for the energy management and the control of power converters
Guichaoua, Philippe. "Etude théorique, optimisation et simulation numérique d'un procédé de régulation thermique." Saint-Etienne, 1986. http://www.theses.fr/1986STET4006.
Full textBarros, Jean-Camille de. "Application de la logique floue à la commande optimale du moteur asynchrone." Aix-Marseille 3, 2003. http://www.theses.fr/2003AIX30006.
Full textThis work concerns the definition of fuzzy systems and the synthesis of fuzzy controllers. The introduced matrix notation unifies in the same formalism, in order to facilitate its computer's implementation, all the stages to design fuzzy system. A systematic and rigorous study of standard fuzzy PID led us to propose two new architectures of fuzzy regulators : Fuzzy-PI, and Fuzzy-PID which present an excellent dynamic behaviour. Tuning parameters is the principal difficulty encountered during fuzzy PID implementation. Basic knowledge of controlled system, and the use of methodology we have defined to synthesis fuzzy regulators allows to autotune the proposed fuzzy regulators. All the developed tools, associated to a fuzzy estimator, are applied in the Fuzzy Vectorial Control by Indirect Rotor Flux Orientation of asynchronous machine. The results obtained show the interest of our approach
Wu, Wei. "Synthèse d'un contrôleur flou par algorithme génétique : application au réglage dynamique des paramètres d'un système." Lille 1, 1998. https://pepite-depot.univ-lille.fr/LIBRE/Th_Num/1998/50376-1998-255.pdf.
Full textCregut, Samuel. "Modélisation et commande du réchauffage de fluides par échangeurs électriques." Ecully, Ecole centrale de Lyon, 1996. http://www.theses.fr/1996ECDL0023.
Full textBariani, Jean-Paul. "Conception et réalisation d'un logiciel de C.A.O. en automatique identification structurelle et commande PID /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376115157.
Full textSola, Yoann. "Contributions to the development of deep reinforcement learning-based controllers for AUV." Thesis, Brest, École nationale supérieure de techniques avancées Bretagne, 2021. http://www.theses.fr/2021ENTA0015.
Full textThe marine environment is a very hostile setting for robotics. It is strongly unstructured, very uncertain and includes a lot of external disturbances which cannot be easily predicted or modelled. In this work, we will try to control an autonomous underwater vehicle (AUV) in order to perform a waypoint tracking task, using a machine learning-based controller. Machine learning allowed to make impressive progress in a lot of different domain in the recent years, and the subfield of deep reinforcement learning managed to design several algorithms very suitable for the continuous control of dynamical systems. We chose to implement the Soft Actor-Critic (SAC) algorithm, an entropy-regularized deep reinforcement learning algorithm allowing to fulfill a learning task and to encourage the exploration of the environment simultaneously. We compared a SAC-based controller with a Proportional-Integral-Derivative (PID) controller on a waypoint tracking task and using specific performance metrics. All the tests were performed in simulation thanks to the use of the UUV Simulator. We decided to apply these two controllers to the RexROV 2, a six degrees of freedom cube-shaped remotely operated underwater vehicle (ROV) converted in an AUV. Thanks to these tests, we managed to propose several interesting contributions such as making the SAC achieve an end-to-end control of the AUV, outperforming the PID controller in terms of energy saving, and reducing the amount of information needed by the SAC algorithm. Moreover we propose a methodology for the training of deep reinforcement learning algorithms on control tasks, as well as a discussion about the absence of guidance algorithms for our end-to-end AUV controller
El, Afou Youssef. "Contribution au contrôle des paramètres climatiques sous serre." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10038/document.
Full textThe principal aim of this thesis is to present the experimental results for controllingtemperature under greenhouse. The PID and LQG controllers are inevitably adjusted by theidentification and the model free control also was implemented to the complex system in orderto regulate the climatic parameters under greenhouse. The obtained results shows the goodperformances for monitoring these parameters. The greenhouse environment is automated withseveral actuators and sensors that are connected to an acquisition and control system basedon a personal computer . This later is associated with electronic circuits allows to protectthe acquisition card against overvoltages and perform the acquisition, treatment and storageof climate data (temperature, relative humidity of the air, and content of CO2). It permitsfurthermore to obtain a good adaptation power given to the actuators that installed in thegreenhouse. Graphical interfaces have been developed using the Simulink/Matlab software.these later bring together both speed foncionnement, ease of use and interactivity and powerof processing the data in real-time
Ferreira, de Sousa Marcus Alexandre. "Contribution à la conception de lois de commande à caractère robuste pour une machine synchrone entraînant une charge élastique à inertie variable." Phd thesis, Toulouse, INPT, 2007. http://oatao.univ-toulouse.fr/7601/1/ferreira.pdf.
Full textDjaroud, Hamed. "Contribution à l'étude des conditions optimales de fonctionnement et à la conduite numérique d'une colonne Kûhni." Toulouse, INPT, 1987. http://www.theses.fr/1987INPT014G.
Full textRuiz-Sanchez, Francisco José. "Stabilité de systèmes bouclés par des contrôleurs flous du type Proportionnel-Dérivé et Proportionnel-Intégral." Compiègne, 1997. http://www.theses.fr/1997COMP1087.
Full textBorja, Rosales Luis Pablo. "Stabilization of a class of nonlinear systems with passivity properties." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS179/document.
Full textIn this thesis we address the problem of stabilization of nonlinear systems. In particular, we focus on models where the energy plays a fundamental role. This energy-based framework is suitable to capture the phenomena of several physical domains, such as mechanical systems, electrical systems, hydraulic systems, etc. The starting point in the proposed controllers are the concepts of passive system, passive outputs and energy (storage) functions. In this work we study two classes of dynamical systems, namely port-Hamiltonian (PH) and Euler-Lagrange (EL), which are suitable to represent many physical processes. A first step towards the controller design is to show the passivity of the PH systems and the characterization of their passive outputs. Thereafter, we explore the use of the different passive outputs in two well-known passivity-based control (PBC) techniques, that is control by interconnection (CbI) and energy balancing (EB), and we compare the obtained results in both approaches. In addition, we propose a novel methodology in which the controller consists in a proportional (P), an integral (I) and, possibly, a derivative (D) term of the passive output. In this approach the energy of the closed-loop system is shaped without the necessity of solving partial differential equations (PDEs). We analyze the scenario of the PID controller using the different passive outputs previously characterized. Finally, we apply a PID-PBC scheme recently proposed in the literature to a complex mechanical system, namely an ultra flexible inverted pendulum, which is represented as a constrained EL model. The controller design, the stability proof, as well as simulations and experimental results are presented to show the applicability of this technique to physical systems
Ketata, Raouf. "Méthodologies de régulation numérique incluant la logique floue." Toulouse, INSA, 1992. http://www.theses.fr/1992ISAT0025.
Full textZhao, Xiaojuan. "Contribution to the implementation of a process control system for continuous powder mixing." Phd thesis, Ecole des Mines d'Albi-Carmaux, 2013. http://tel.archives-ouvertes.fr/tel-00975251.
Full textTenoutit, Mammar. "Définition et réglage de correcteurs robustes d'ordre fractionnaire." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2268.
Full textThe application of fractional calculus in automatic control have received much attention these last years, mainly in robust control. This PhD dissertation is a contribution to the control of integer order systems using a fractional order PID controller.The classical PID, well known for its applications to industrial plants, has been adapted to the fractional case as a PInDf controller, thanks to a fractional order reference model, characterized by its robustness to static gain variations.This new controller has been generalized to time delay systems as a fractional SMITH Predictor. In standard case, these controllers are adapted to first and second order systems, with or without a time delay. For more complex systems, two design methodologies have been proposed, based on the method of moments and on output feedback approach.For systems whose model is obtained by an identification procedure, the closed loop has to be robust to estimation errors. So, a worst-case model, derived from the covariance matrix of the estimator and the frequency uncertainty domains, has been proposed for the design of the controller.The different numerical simulations demonstrate that this methodology is able to provide robustness to static gain variations and to identification uncertainties
Chumacero, Polanco Erik. "Velocity sensorless control switched reluctance motors." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112062/document.
Full textIn this thesis dissertation we present the design, stability analysis, numerical simulations and physical experiments of different controllers designed to drive the mechanical velocity of the switched reluctance motor (SRM). In the First and Second Chapters a brief description of the physics and construction of the SRM is presented, as well as the problem of control to be aboard, that is the velocity sensorless control of motors and the state of the art of this problem. The proposed solution is introduced and a summary of the published papers as well as the contribution are also presented.In the Chapter number three is presented the velocity sensorless and adaptive control of the SRM. It is assumed, in a first stage, that only mechanical velocity is unknown, uniform exponential stability of the errors is achieved in this scenario. In a second stage, conditions are stressed and in addition to the velocity, physical parameters are also assumed unknown, uniform asymptotical stability is achieved in this case and parameters estimation is guaranteed under a persistence of excitation condition. This controller consists of two loops, an internal loop based on a PI2D–type controller which is of particular interest given it is free-model; this loop drives the mechanical variables –that is position and velocity- towards a desired reference. An external control loop takes the electrical current towards a ‘’virtual” current reference which is generated based on a torque share approach. The controller is tested on numerical simulations, which are also presented.In the fourth chapter, a new approach on the modeling of the SRM is utilized to design the controller, in this scenario is assumed that the whole state and all the physical parameters are available, however this approach is thought to be suitable to observer based controller, whose ongoing research is being performed. The controller is composed by two loops, similarly to the one mentioned previously. This controller is selected because it is suitable for certainty equivalence control, that is, to substitute the “measurements” by the “observations” coming from a virtual sensor. Numerical implementation is performed on Simulink of Matlab.Finally, in the Chapter five, the experimental results carried out to evaluate the performance of the proposed controllers are presented, these are the PI2D and the adaptive PI2D controllers for the simplified model and the $PID$ controller for the novel modeling approach. In the first part, a brief description of the construction of the utilized bench is presented as well as the some technical characteristics. Three different velocity profiles were imposed to each of the overmentioned controllers –these are the so called smooth step, the saturated ramp and the sinusoidal reference- and good results, considering that the controlled variable is the velocity, were obtained. The last chapter corresponds to the conclusions of the performed research as well as to the future work
Cisneros, Montoya Rafael. "Commande PI basée sur la passivité : application aux systèmes physiques." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS187/document.
Full textOne of the best known forms of feeding back a system is through a three-term control law called PID (Proportional-Integral-Derivative) controller. PID controllers are sufficient for many control problems, particularly when process dynamics are not highly nonlinear and the performance requirements are modest. Besides, because of its simple structure, the PID controller is the most adopted control scheme by industry and practitioners, beeing the PI the form mostly employed. Since the PI tuning methods are based on the linearization, commissioning a PI to operate around a single operating point is relatively easy, however, the performance will be below par in wide operating regimes. To overcome this drawback the current practice is to re-tune the gains of the PI controllers based on a linear model of the plant evaluated at various operating points, a procedure known as gain-scheduling. There are several disadvantages of gain-scheduling including the need to switch (or interpolate) the controller gains and the non-trivial definition of the regions in the plants state space where the switching takes place - both problems are exacerbated if the dynamics of the plant is highly nonlinear. In other common scenarios, a little information about the process dynamics or only a "good" linear approximation is taken into account when designing the control design. This impedes to analyse the global stability of the system. In this context, the current thesis work is aimed at the designing of PI controllers, based on the passivity theory, such that the stability of the closed-loop system is guarantied. One of the main advantages of passivity concepts is that they offer a physical and intuitive appeal. The primary idea in passive systems is that the power flowing into the system is not less that the increase of storage. Thus, they cannot store more energy than is supplied to it from the outside, with the difference being the dissipated energy. Thus, introducing the concept of energy, this methodology allows to recast the control problem as finding a dynamical system such that system energy function takes the desired form. Also, with this formulation, the communication between practitioners and control theorists is facilitated, incorporating prior knowledge of the system and providing physical interpretations of the control action. In this thesis, a constructive methodology for deriving PI passivity-based controllers is presented and motivated by the application to physical systems
Mallem, Badis. "Modélisation, analyse et commande des grands systèmes électriques interconnectés." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2010. http://tel.archives-ouvertes.fr/tel-00557829.
Full textGuerrini, Alexandre. "Evaluation des performances de systèmes d’assistance au contrôle pour la réanimation : Application au contrôle de la glycémie." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112105.
Full textThe variety of ICU patients diseases implies that technological environment of critical care is composed of many vital signs monitoring systems, allowing the medical team to determine appropriate treatment to the patient. More and more systems have a decision-making support function to reduce the mental and physical workload of nurses required for certain treatments or protocols. These computerized systems facilitate the integration of the protocol and the information available in the signals and can lead to systems of high complexity. The issue of assessing the performances and the benefit/risk balance for the patient related to the use of new support systems arises. The problem is to conduct this evaluation a priori, during the design process of the protocol or algorithm. This work provides an example of a method to support the control of blood glucose in the ICU system evaluation is conducted for the design of the control algorithm to a large-scale clinical study.The origin of the studied device comes from the fact that patients often experience hyperglycemia due to stress upon their arrival in the ICU (increased insulin resistance, administration of interacting drugs or insulin deficiency inhibit the physiological response to the blood sugar increase). A problem then is that, on the one hand, as sustained hyperglycemia is associated with an increased morbidity or mortality, controlling glycaemia reduces risks, but, on the other hand, reducing blood sugar exposes to the risk of hypoglycemia during the ICU stay. In this case, optimizing benefit/risk ratio is still an open problem.Although there are many studies on modeling the pharmacodynamics of glucose-insulin system, few works use these models to provide a functional, tested and industrialized control system. The thesis presents a glycemic control system and a generalized method of evaluation with other systems, which tests digitally technical and clinical performances of such systems on virtual patients. The results of a real clinical trial are also presented
Lemazurier, Lori. "Conception d’un système avancé de réacteur PWR flexible par les apports conjoints de l’ingénierie système et de l’automatique." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2018. http://www.theses.fr/2018IMTA0069/document.
Full textIn the event of increasing renewable energies in France, this thesis proposes to study the flexibility increase of pressurized water reactors (PWR) throughout two different engineering disciplines aiming at complementary objectives: Systems Engineering (SE) and Control theory.In a first phase, within the frame of complex systems design and Model Based Systems Engineering, this work proposes a SE method based on SE standard principles and compliant with Framatome’s practices and addressing the revealed issues. This SE contribution is twofold: formalize and ensure the path from requirements to system architectures and enhance the capabilities of models verification. The method revolves around interoperable modeling languages, covering the SE processes: from requirement engineering to system architecture design. The method is applied to the system, which performances are the most limiting in the context of flexibility increase: the Core Control. This algorithmic reactor component ensures the control of: the average coolant temperature, the axial offset and the rod bank position, three of the core main functioning parameters.In order to provide a technical contribution relying on some advanced control methodologies. It consists in designing a control system meeting the requirements defined by the SE method application. The proposed solution is in a two-layer control strategy using the synergies of multi-objective control, gain-scheduling and predictive control strategies. A simplified innovative nuclear reactor model is employed to conceive the control algorithm, simulate and verify the developed models. The results obtained from this original approach showed the ability to adapt to various specifications. Compared to conventional core control modes, the simulation results showed very promising performances, while meeting the requirements, when evaluated on a realistic reactor model
Khanchoul, Mohamed. "Contribution au développement de la partie électromécanique d’un compresseur pour climatisation de véhicule électrique." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112384/document.
Full textThis thesis is part of the project Compacite which aims to develop an electric compressor for electrical vehicles using a mechatronic approach. In this way, the LGEP contribution is to develop the electromechanical part of the compressor.The document is divided in two parts: the first one is related to the design of the motor and the second part is dedicated to the sensorless control.In the first part, the electromagnetic design is proposed to comply with the industrial constraints according to the compressor operation. The specifications require a compact motor (external diameter equal to 97 mm and an active depth less than 50 mm) and a good power/mass ratio (6 kW for a weight of 1.8 kg). At first the design is based on an analytical model in order to obtain a fast sizing. Thereafter the finite element method is used for multiphysical studies (magnetic, thermal and mechanical (in terms of strength of materials and vibration)). A prototype is built and characterized on a test bench. In the second part, some algorithmic control laws have been developed with sensor and sensorless control. In this part a particular control law (sampled data passivity based control) with a low algorithmic cost has been developed for driven the motor and has been validated on the test bench. At the end an observer based on the estimation of the electromotive force is used for sensorless control and validated on the test bench