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input-output linearization and decoupling of mechanical control systems

INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL 2024年第13期34卷 8644-8660页

作者： Nowicki, Marcin Respondek, Witold Poznan Univ Tech Inst Automat Control & Robot Piotrowo 3a PL-61138 Poznan Poland Lodz Univ Technol Inst Automat Control Lodz Poland Normandie Univ INSA Rouen St Etienne Du Rouvray France

In this article, we present the problem of simultaneous input-output feedback linearization and decoupling (noninteracting) for mechanical control systems with outputs. We show that the natural requirement of preserving mechanical structure of the system and of transformations imposes supplementary conditions when compared to the classical solution of the same problem for general control systems. These conditions can be expressed using objects on the configuration space only. We illustrate our results with several examples of mechanical control systems.

关键词： decoupling matrix input-output decoupling input-output linearization mechanical control systems noninteracting control

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input-output linearization of a Thermoelectric Cooler for an Ice Clamping System Using a Dual Extended Kalman Filter 27

Input-Output Linearization of a Thermoelectric Cooler for an...

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27th International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： van Rossum, Felix Haus, Benedikt Mercorelli, Paolo Aschemann, Harald Leuphana Univ Luneburg Inst Prod Technol & Syst IPTS Univ Allee 1 D-21335 Luneburg Germany Univ Rostock Chair Mech D-18051 Rostock Germany

ISBN: (纸本)9798350311075

This paper deals with an input-output linearization for a nonlinear ice clamping system based on Peltier cells used in an innovative manufacturing system. For this model-based design, a third-order state-space model based on physical principles is derived. Unknown states as well as disturbances are estimated by a dual extended Kalman filter. Based on the estimated states and disturbances, an input-output linearization of the nonlinear system can be performed, with an asymptotically stable internal dynamics. Accordingly, an accurate tracking control is designed to follow a desired cold-side temperature even in the presence of disturbances. Meaningful simulation results are shown that point out the effectiveness of the proposed control approach.

关键词： Thermal systems input-output linearization dual extended Kalman filter manufacturing systems

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pH Control of Yeast Fed-Batch Fermentation Process by Improved input-output linearization Method

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THEORETICAL FOUNDATIONS OF CHEMICAL ENGINEERING 2023年第6期57卷 1403-1413页

作者： Ju, Hyok-Chol Ri, Kuk-Chol Jon, Ji-Song Kim, Chol-Jin Kim Il Sung Univ Fac Elect & Automat Pyongyang North Korea

In general, there are many influencing factors in the cultivation of microorganisms, including yeast, among which pH control is of great importance. Since the pH characteristics of yeast fermentation processes are nonlinearity and the production of acid during yeast fermentation is typically nonlinearity, the process pH values cannot be adjusted rapidly and accurately by conventional linear control techniques. Hence, the intrinsic nonlinear characteristics of the pH control system are approximated by several nonlinear models including Hammerstein-Wiener model, and a controller is designed based on the models. To increase the yield in yeast cultures, fed-batch fermentation method should be used more than batch cultivation method. In brief, fed-batch fermentation is a method of continuous addition of the nutrient solution(glucose fluid) following the number of yeast cells present inside the yeast fermentation tank. In this paper, a mathematical model based on chemical equilibrium is proposed to control the pH of an industrial yeast fermentation tank with only inflow, no outflow, and relatively large internal volume, and a controller is designed using the input-output linearization method. The performance of the designed controller is verified by numerical simulation and field experiments.

关键词： yeast culture modeling input-output linearization

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Fault Tolerant Control via input-output linearization Method for LED-Driver Using a Boost Converter

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IEEE ACCESS 2023年 11卷 10390-10397页

作者： Torres, Gerardo Ortiz Rumbo-Morales, Jesse Y. Sanchez, Rene Osorio Martinez-Garcia, Mario Blanco, Marco Antonio Rodriguez Univ Guadalajara Ctr Univ Valles Ameca 46600 Jalisco Mexico Univ Autonoma Carmen Fac Ingn Campeche 24180 Mexico

This paper proposes a method based on an input-output linearization controller with a nonlinear adaptive observer, in order to achieve both an effective light-emitting diode (LED) current tracking and an actuator fault tolerant controller strategy for a LED-driver, using a boost converter. The partial fault is presented as a Loss of Effectiveness (LoE) in the embedded control target by considering that it generates a faulty Pulse-Width Modulation (PWM) signal. Also, faults of energy storage components in the power system are considered as actuator partial faults. An internal stability analysis is presented to ensure the feasibility of the nonlinear controller design. The nominal feedback controller is able to compensate for the nonlinearity of the system exactly, thus yielding a linear control loop. Furthermore, a nonlinear adaptive observer is considered for fault estimation. When the actuator fault is detected and estimated correctly, fault accommodation and reconfiguration strategies are performed to reduce the fault's effect. The controller and observer gains are tuned using genetic algorithm techniques to have a desired closed-loop and fault estimation error response. Finally, simulations results are done in order to illustrate the effectiveness of the proposed methodology.

关键词： Light emitting diodes Circuit faults Nonlinear dynamical systems Actuators Stability analysis Observers Mathematical models Boost converter fault tolerant control genetic algorithm input-output linearization LED-driver

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Mechanical input-output linearization and decoupling of mechanical control systems 28

Mechanical input-output linearization and decoupling of mech...

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28th International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Nowicki, Marcin Respondek, Witold Poznan Univ Tech Inst Automat Control & Robot Poznan Poland Lodz Univ Technol Inst Automat Control Lodz Poland Normandie Univ INSA Rouen St Etienne Du Rouvray France

ISBN: (纸本)9798350362350;9798350362343

In this paper, we present a mechanical counterpart of the problem of simultaneous input-output feedback linearization and decoupling that is designed for control systems that possess a mechanical structure. We show how our problem differs from the classical one and what are the supplementary conditions for preserving the mechanical structure of the system. Unlike our previous works, here we treat a mechanical control system (MSO) as a control system on TQ with a special structure of the drift and control vector fields.

关键词： mechanical control systems input-output linearization input-output decoupling

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input-output linearization of non-linear time-varying delay systems: the single-input single-output case

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IMA JOURNAL OF MATHEMATICAL CONTROL AND INFORMATION 2020年第3期37卷 831-854页

作者： Haidar, Ihab Nicolau, Florentina Barbot, Jean-Pierre Aggoune, Woihida ENSEA Quartz EA 7393 6 Ave Ponceau F-95014 Cergy Pontoise 95014 France

This paper deals with the input-output linearization of non-linear time-varying delay systems. We introduce an extension of the Lie derivative for time-varying delay systems and derive sufficient conditions for the existence of a causal and bounded non-linear feedback linearizing the input-output behaviour of the system. Sufficient conditions ensuring the internal stability after output stabilization are also presented. Finally, several examples illustrating our main results are discussed.

关键词： non-linear control systems delay systems input-output linearization Lie derivative

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Antiwindup input-output linearization Strategy for the Control of a Multistage Continuous Fermenter With input Constraints

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IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY 2020年第3期28卷 766-775页

作者： Casenave, Celine Perez, Marc Dochain, Denis Harmand, Jerome Rapaport, Alain Sablayrolles, Jean-Marie Univ Montpellier French Natl Inst Agr Res INRA Montpellier SupAgro Res Unit Math Informat & STat Environm & Agron MI F-34060 Montpellier France Univ Montpellier French Natl Inst Agr Res INRA Montpellier SupAgro Res Unit Sci Oenol SPO F-34060 Montpellier France UCL Inst Informat & Commun Technol Elect & Appl Math B-1348 Ottignies Belgium Univ Montpellier French Natl Inst Agr Res INRA LBE F-11100 Narbonne France

This paper deals with the control of a multistage continuous fermenter (MSCF) used for the study of wine fermentation. The control design is facing three main difficulties: 1) system nonlinearity;2) lack of online measurement of the controlled variable (sugar concentration);and 3) positive constraints on the control inputs (inlet flow rates of each tank) coming from the cascade structure of the system. A control strategy has been proposed, which accounts for these specificities. It is based on an input-output linearization control law coupled with an antiwindup technique and a state observer (the Kalman filter). The strategy has been tested and validated first on numerical simulations and then applied to the real process. The experiments gave satisfactory results that open up new perspectives on the use of the MSCF.

关键词： Inductors Process control Sugar Control design Analytical models Numerical models Antiwindup cascade of reactors control design input-output linearization varying input constraints wine fermentation

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Engine-Based input-output linearization for Traction Control Systems 21st

Engine-Based Input-Output Linearization for Traction Control...

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21st IFAC World Congress on Automatic Control - Meeting Societal Challenges

作者： Reichensdoerfer, Elias Odenthal, Dirk Wollherr, Dirk Tech Univ Munich Chair Automat Control Engn D-80333 Munich Germany BMW Grp D-80788 Munich Germany BMW M GmbH D-85748 Garching Germany

Engine-based traction control marks a paradigm shift for electronic stability systems in the automotive industry. It enables traction control systems with higher bandwidth and performance by an architectural change. As a new approach, only few work exists that considers analytic control design for engine-based traction control. This paper extends our recent work on input-output linearization for engine-based traction control. Global, exponential stability for arbitrary vehicle parameters and time-varying road adhesion coefficients is shown for the first time. Experiments in a test vehicle compare the proposed design with different traction control systems. It is shown that on the considered maneuver, the control design achieves superior tracking performance, disturbance attenutItion and damping of drivetrain oscillations. Copyright (C) 2020 The Authors.

关键词： Traction control system input-output linearization passivity zero dynamics

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Engine-Based input-output linearization for Traction Control Systems ⁎

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IFAC-PapersOnLine 2020年第2期53卷 14055-14060页

作者： Elias Reichensdörfer Dirk Odenthal Dirk Wollherr Technical University of Munich Chair of Automatic Control Engineering 80333 Munich Germany and BMW Group 80788 Munich Germany BMW M GmbH 85748 Garching near Munich Germany Technical University of Munich Chair of Automatic Control Engineering 80333 Munich Germany

关键词： Traction control system input-output linearization passivity zero dynamics

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An input-output linearization-based control strategy for wind energy conversion system to enhance stability

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WIND ENERGY 2018年第3期21卷 151-162页

作者： Liao, Kai Wang, Yao He, Zhengyou Nanyang Technol Univ 50 Nanyang Ave Singapore Singapore Southwest Minzu Univ Chengdu Sichuan Peoples R China Southwest Jiaotong Univ Chengdu Sichuan Peoples R China

This paper proposes a novel control strategy for doubly fed induction generator (DFIG)-based wind energy conversion system to investigate the potential of enhancing the stability of wind energy transmission system, a synchronous generator weakly integrated to a power system with a DFIG-based wind farm. The proposed approach uses state feedback to exactly linearize the nonlinear wind energy transmission system from control actions (active power and reactive power control order of DFIG) to selected outputs (power angle and voltage behind transient resistance of synchronous generator) at first. Then, on account of the linearized subsystem, the stability enhancement controller is designed based on linear quadratic regulator algorithm to contribute adequate damping characteristics to oscillations of the synchronous generator system under various operation points. The proposed control strategy successfully deals with the nonlinear behaviors exist from the inputs to outputs and improve the robustness with respect to the variation of system operation points. Furthermore, not only the rotor angle stability but also the voltage stability is enhanced by using the proposed control strategy. The simulation results carried on the studied system verify the effectiveness of the proposed control strategy of wind energy conversion system for system stability enhancement and the robustness against various system operation points.

关键词： doubly fed induction generator (DFIG) input-output linearization stability enhancement state feedback control wind energy conversion system

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