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9th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, SAFEPROCESS 2015

作者： Gáspár, Péter Bokor, József Mihály, András Szabó, Zoltán Fülep, Timea Szauter, Ferenc Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Budapest Hungary Institute for Computer Science and Control Hungarian Academy of Sciences Budapest Hungary Research Center of Vehicle Industry Széchenyi István University Gyór Hungary

The paper presents a fault tolerant reconfigurable control method for vehicles driven by four in-wheel electric motors and a steering system. The aim of the design is to realize robust velocity and road trajectory tracking even under challenging driving conditions or actuator failures. The vehicle is operated solely with the in-wheel motors, thus steering intervention is only applied in case of skidding or a failure of an electric motor. The reconfigurable control is realized based on Linear Parameter Varying (LPV) framework, using the specific characteristics of the in-wheel motors of fast and accurate torque control. The operation of the designed control system is demonstrated in a CarSim simulation environment. © 2015, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Robust control

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Fault-tolerant Internal Model control with application to a diesel engine

Fault-tolerant Internal Model Control with application to a ...

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作者： Hilsch, Michael Jan, Lunze Nitsche, Rainer Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661463

The paper proposes a new structure for fault-tolerant control of nonlinear systems subject to persistent faults. The principle of Internal Model control (IMC) is extended to ensure fault tolerance with respect to faults that do not affect the plant stability. The method is based on a representation of sensor, actuator and plant faults as parameter changes of the plant model, which is part of the IMC control law. It is proved that the IMC control loop, which is extended by a diagnostic unit, tolerates substantial faults and ensures the nominal loop performance unless the fault changes the structure of the nonlinear plant. These results are illustrated for the air path of a Diesel engine. © 2009 IFAC.

关键词： Diesel engines

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Design of Experiments for Battery Aging Estimation

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IFAC-PapersOnLine 2018年第28期51卷 386-391页

作者： Pózna, Anna I. Hangos, Katalin M. Magyar, Attila Department of Electrical Engineering and Information Systems Faculty of Information Technology University of Pannonia Egyetem str. 10. VeszprémH-8200 Hungary Process Control Research Group HAS Research Institute for Computer Science and Control Kende str. 13-17. BudapestH-1111 Hungary

Li-ion batteries are widely used in EV applications and are imposed to several aging effects during their lifetime. Since battery health cannot be measured directly, information about its health can be obtained by iteratively re-estimating the parameters of the model describing its dynamical behavior. The optimal design of experiments is investigated in this paper. The proposed method applies families of input signals (PRBS current and constant current-constant voltage (CC-CV) signals) to the batteries to estimate the key aging factors. Simulation experiments have been used to analyze the statistical properties of the estimators as a function of the design parameters of the input signal families. The results show that the CC-CV charging-discharging cycle has the possibility to gain the most information out of the battery model parameter estimation. © 2018

关键词： Parameter estimation Battery management systems Design of experiments Electric excitation Iterative methods Lithium ion batteries Planning Electric Experiment design Input Model formulation Storage operations

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Nonlinear multivariable robust internal model control of a two-stage turbocharged diesel engine

Nonlinear multivariable robust internal model control of a t...

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作者： Schwarzmann, Dieter Nitsche, Rainer Lunze, Jan Schmidt, Marco Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661265

This paper proposes a new approach to the design of Internal Model controllers (IMC) for nonlinear systems with emphasis on robustness issues. A nonlinear IMC controller is used which is based on the right inverse of the plant model. As the right inverse is, in general, not realisable, it is combined with a linear filter. The right inverse is constructed using nonlinear geometric control methods for input-affine systems. Robust stability of the closed-loop is investigated for unstructured (multivariable) output uncertainties. The industrial feasibility of the controller and the robustness analysis is shown for the nonlinear IMC control loop of a two-stage turbocharged diesel engine.

关键词： controllers

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Model-based test signal generation for service diagnosis of automotive systems

Model-based test signal generation for service diagnosis of ...

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作者： Ungermann, Michael Jan, Lunze Schwarzmann, Dieter Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661722

A main step in service diagnosis is the selection of dedicated tests for a faulty automotive system in order to decide in which component a fault has occurred. This paper develops a test selection approach that is based on structural models of the system. A structure graph represents the physical couplings of the input, state, and output signals. The test selection method aims at finding operating points in which faults distinguish with respect to their physical input-state-output paths through the components and, thus, can be isolated by steering the system into these operating points. The main ideas are illustrated by a spark ignition engine with the faults of a leakage in the intake manifold and damaged intake valves to be distinguished. © 2010 IFAC.

关键词： Fault detection

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Elimination lemma and contractive extensions

Elimination lemma and contractive extensions

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IEEE Annual Conference on Decision and control

作者： Z. Szabo Zs. Biro P. Gaspar J. Bokor Computer and Automation Research Institute Hungarian Academy of Sciences Hungary Computer and Automation Research Institute Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

ISBN: (纸本)9781467357159

The Elimination lemma provides analysis conditions that constitute a fundamental tool in obtaining state space solutions of robust control design problems. Using operator theoretical concepts, the paper provides a derivation of the Elimination lemma based on a contractive extension principle and to give a Krein space geometric interpretation of the result. In this way the statement of the lemma is related to general techniques, like interpolation and commutant lifting theory. This result is considered to be an initial step in the control relevant formulation of the lemma in an infinite dimensional setting.

关键词： Lemma design problems Interpolation derivation

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Fault-tolerant internal model control of a diesel engine air path

Fault-tolerant internal model control of a diesel engine air...

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作者： Hilsch, M. Lunze, J. Nitsche, R. Arndt, T. Robert Bosch GmbH Corporate Sector Research and Advance Engineering Stuttgart Germany Institute of Automation and Computer Control Ruhr-Universität Bochum Bochum Germany

ISBN: (纸本)9783902661722

The paper considers the fault-tolerant control of the boost pressure and the exhaust gas recirculation of a two-stage turbocharged Diesel engine air path. The aim is to recover the stability and setpoint tracking properties of the closed-loop system in case of actuator, sensor or system faults. A model of the nominal air path is extended to describe the Diesel engine under the influence of the faults and to apply the principle of Fault-Tolerant Internal Model control (FTIMC). The application study compares the FTIMC scheme with the nominal Internal Model control of the Diesel engine and shows that for several important fault cases the FTIMC principle recovers the stability of the control loop and leads to severe improvements of setpoint tracking properties. © 2010 IFAC.

关键词： Diesel engines

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Set-based analysis of the variable-geometry suspension system 19

Set-based analysis of the variable-geometry suspension syste...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Németh, Balázs Gáspár, Péter Institute for Computer Science and Control Hungarian Academy of Sciences Kende u. 13-17 BudapestH-1111 Hungary Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Hungary

ISBN: (纸本)9783902823625

The paper gives an analysis of a variable-geometry suspension system. Since the system also affects both the wheel camber angle and the additional steering angle, the coordination of steering and wheel tilting can be handled by this system. Since the nonlinear effects of the system are significant, the paper gives a detailed set-based analysis for the possibilities and constrains. A nonlinear polynomial SOS (Sum-of-Squares) programming method is applied to present the advantages of the variable-geometry suspension system. © IFAC.

关键词： Suspensions (components)

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Quadratic separators in the input-output setting

Quadratic separators in the input-output setting

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IEEE Annual Conference on Decision and control

作者： Z. Szabo Zs. Biro J. Bokor Computer and Automation Research Institute Hungarian Academy of Sciences Hungary Computer and Automation Research Institute Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

ISBN: (纸本)9781467357159

The paper provides a formulation of the quadratic separator result in a fairly general input-output operator framework and it focuses on the specific points that are different compared to the usual finite dimensional formulations. The major contribution of the paper is to emphasize the role of the causality in obtaining the stability result having a quadratic separator and the fact that the plant and the boundedness constant in the formulation of the well-posedness condition determine the robust stability domain associated to the given plant, i.e., the set of those systems {κ} that stabilizes the given plant and produce the given "disturbance rejection" level γ. Concerning the causality issue the necessity of the homotopy argument in the IQC results is also explained and its relation with a general result concerning nest algebras is pointed out.

关键词： Separators INPUT-OUTPUT Quadratic

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Design of adaptive cruise control for road vehicles using topographic and traffic information 19

Design of adaptive cruise control for road vehicles using to...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Gáspár, Péter Németh, Balázs Institute for Computer Science and Control Hungarian Academy of Sciences MTA-BME Control Engineering Research Group Hungary Institute for Computer Science and Control Hungarian Academy of Sciences Kende u. 13-17 BudapestH-1111 Hungary

ISBN: (纸本)9783902823625

The paper proposes the design of the speed of road vehicles, which minimizes control energy and fuel consumption while keeping travelling time and, moreover, considers the local traffic information to avoid conflicts in congestions. Topographic data and speed limits on the road are incorporated into the design of fuel efficient operation of the vehicle. Since the biased consideration of fuel consumption may lead to the reduction of speed, the traffic flow in the surroundings of the vehicle may be impaired. Thus, the information about the local traffic is an important factor considering the wider transportation system. In the paper the energy-efficient predicted cruise control strategy is presented, which is able to adapt to the motion of the surrounding vehicles. In this way a balance between the designed speed and the flow of the local traffic can be guaranteed. © IFAC.

关键词： Street traffic control

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