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Semantic Runtime Interface Description Based on engineering Knowledge

IFAC Proceedings Volumes 2012年第6期45卷 805-810页

作者： Petr Novák Martin Melik-Merkumians Michael Steinegger Thomas Moser Radek Ŝindelář Alois Zoitl Christian Doppler Laboratory for Software Engineering Integration for Flexible Automation Systems Vienna University of Technology AT-1040 Vienna Austria Department of Cybernetics Faculty of Electrical Engineering Czech Technical University in Prague 121 35 Prague Czech Republic Automation and Control Institute Vienna University of Technology AT-1040 Vienna Austria

Design and integration of industrial automation systems require cooperation of different engineering disciplines and various engineering tools during both design and run time. The scope of this paper is to bridge the gap between design-time description and runtime integration in a semi-automated way. Furthermore, we address the problem of integrating legacy systems with no access to original engineering data. It is assumed that an interface between a real industrial system and software automation tools is OPC Unified Architecture (UA) and we propose to derive the plant knowledge from the OPC UA tag list. Since it is not possible to solve this task in general, we require the tag list to adopt the naming convention of IEC 81346, which is widespread in large-scale systems. This tag list is parsed and the engineering knowledge is derived and stored in the engineering Knowledge Base. Consequently, the plant knowledge is mapped to knowledge related to software automation tools, such as simulators. The proposed methodology is evaluated on a real-life example dealing with a laboratory tank model.

关键词： automation Integration Knowledge-based systems Data acquisition OPC UA IEC 81346 Computer Simulation Software tools

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A stochastic state prediction in AFM based nanomanipulation

A stochastic state prediction in AFM based nanomanipulation

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2012 9th IEEE International Conference on Mechatronics and automation, ICMA 2012

作者： Wang, Zhiyu Liu, Lianqing Wang, Zhidong Dong, Zaili Yuan, Shuai Hou, Jing State Key Laboratory of Robotics Shenyang Institute of Automation CAS Shenyang 110016 China Faculty of Electrical and Control Engineering Liaoning Technical University Huludao 125105 China Dept. of Advanced Robotics Chiba Institute of Technology Chiba Japan Graduate School Chinese Academy of Sciences Beijing 100001 China

ISBN: (纸本)9781467312776

The reliability of AFM based nanomanipulation is one of the prerequisites for nano fabricating, thus uncertainties of the target nano-particle position need to be controlled within a pointed limits, which lead to two problem to be solved: one is how to describe state uncertainties at every different sample times;the other is how to deduce the next state uncertainty according to the current one. This paper provides a method to construct a stochastic predictive model to covering those problems. In the concrete, the predictive model uses Gaussian and Beta distribution as well as Mont Carlo Method to describe and deduce the state uncertainties respectively. The method is also applied to the process of pushing a nano-particle using AFM. © 2012 IEEE.

关键词： Stochastic systems

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A ring for description and control of time-delay systems

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WSEAS Transactions on Systems 2012年第10期11卷 571-585页

作者： Pekar, Libor Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlin nam. T. G. Masaryka 5555 76001 Zlin Czech Republic

This contribution aims a revision and extension of the ring of retarded quasipolynomial meromorphic functions (RMS) for description and control of time-delay systems (TDS). The original definition has some significant drawbacks - especially, it does not constitute a ring. Our new definition extends the usability to neutral TDS and to those with distributed delays. As first, basic algebraic notions useful for this paper are introduced. A concise overview of algebraic methods for TDS follows. The original and the revised definitions of the ring together with some its properties finish the contribution. There are many illustrative examples that explain introduced terms and findings throughout the paper.

关键词： Delay control systems

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An introduction to the special issue on time delay systems: Modelling, identification, stability, control and applications

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WSEAS Transactions on Systems 2012年第10期11卷 539-540页

作者： Pekař, Libor Neri, Filippo Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Zlín Czech Republic Department of Computer Science University of Naples Federico II Naples Italy

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Approximate feedback linearization of the Acrobot tracking error dynamics with application to its walking-like trajectory tracking

Approximate feedback linearization of the Acrobot tracking e...

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Mediterranean Conference on control and automation (MED)

作者： Milan Anderle Sergej Čelikovský Faculty of Electrical Engineering Department of Control Engineering Czech Technical University Prague Czech Republic Institute of Information Theory and Automation Academy of Sciences슠of the슠Czech Republic Prague Czech Republic

The purpose of this paper is to provide theoretical framework enabling to design tracking feedback for a general Acrobot trajectory which allows rigorous convergence proof. It is based on the partial exact feedback linearization of the Acrobot model followed by further approximate feedback linearization of the tracking error dynamics for arbitrary target trajectory. The approach presented here enables to prove the convergence in a rigorous way at least for small initial tracking errors. The slight novelty here is that neglecting is made with respect to tracking error along any general trajectory to be tracked, not just in some neighborhood of fixed working point. To demonstrate viability of this approach, simulations of a tracking of a walking-like cyclic trajectory are presented. The walking includes several steps including impacts between them. As a matter of fact, the exponentially stable tracking during the swing phase only is capable to stabilize overall walking, including the effect of the impacts.

关键词： Trajectory Legged locomotion Target tracking Convergence Equations Mathematical model Mechanical systems

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Real-time safety circuit based on combined MEMS sensor data for Rehabilitation device

Real-time safety circuit based on combined MEMS sensor data ...

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International Carpathian control Conference (ICCC)

作者： Kamil Židek Alexander Hošovský Vladislav Maxim Department of Mathematics Informatics and Cybernetics Faculty of Manufacturing Technologies a seat in Presov TU Kosice Presov Slovakia Department of Automation Control and Human Machine Interaction Faculty of Mechanical Engineering TU Kosice Kosice Slovakia

The article deals with implementation of MEMS sensors to real-time safety circuit for automated rehabilitation device. It is necessary to acquire information about some dangerous situation during the rehabilitation process as fast as possible. We need a real-time response from sensors, because there is additional time needed to stop a device of several milliseconds. There is designed solution the angle, velocity, acceleration and vibration of each joints of rehabilitation arm are monitored. The Device works independently of the control system, detects critical states, stops rehabilitation process and store critical data. Two accelerometers (analog and digital) and one gyroscope sensor are used in the device. The main information is acquired from combination of MEMS accelerometer values. Gyroscope provides a check data for operation reliability. The designed solution can be used in other automated devices too, where some unpredictable error during the operation can cause a human injury.

关键词： Accelerometers Gyroscopes Real time systems Acceleration Safety Micromechanical devices Testing

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Expansion of the available use classes in IEEE 802.15.4 networks for usage in the industrial environment

Expansion of the available use classes in IEEE 802.15.4 netw...

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International Symposium on Wireless Communication Systems (ISWCS)

作者： Odilson T. Valle Carlos Montez Paulo Portugal Francisco Vasques Daniel G. Costa ISRIIDMEC Faculty of Engineering University of Porta Portugal Department of Control and Automation Federal University of Santa Catarina Brazil Department of Technology State University of Feira de Santana Brazil

The usage of Wireless Sensor Networks (WSNs) in industrial environments has been steadily increasing, due to the reduced deployment and maintenance costs, when compared to the use of wired networks for connecting single I/O points in industrial applications. The most promising WSN standard is the one defined by the IEEE 802.15.4 standard. However, it does not support the adequate mechanisms to deal with the unreliable nature of an industrial communication environment. In this paper, we propose an extension of the use classes available for this standard, together with the proposal of adequate message retransmission schemes, in order to increase the reliability of message exchanges in industrial environments. To demonstrate the effectiveness of the proposed schemes, we present a simulation assessment of both the proposed message retransmission schemes and the Guaranteed Time Slots (GTS) mechanism, as defined by the standard.

关键词： Sensors IEEE 802.15 Standards Safety Monitoring Ions

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Intelligent rehabilitation devices and user interfaces

Intelligent rehabilitation devices and user interfaces

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International Symposium on Applied Machine Intelligence and Informatics (SAMI)

作者： R. Balog L. Szerdiová D. Šimšík Alena Galajdová D. Onofrejová Mechanical Engineering Faculty Department of Automation Control and Human Machine Interactions Technical University of Košice Kosice Slovakia MEF Department of Industrial Engineering and Management MEF Technical University of Košice Slovakia

The paper presents a brief overview of the projects integrating the development of ICTs with the rehabilitation system for people with risk of fall that are solved under the Ambient Assistive Technology (AAL) programme. The paper includes description of our concept of the diagnostic and rehabilitation system with preventative features to decrease the risks of fall and its consequences in elderly. It integrates functions of two systems developed within the two research projects MonAMI (6FP) and SMILING (7FP) where we participated. The main goal is to ensure higher safety for seniors who are in risk of falls and are living alone. The first module of the integrated rehabilitation system is aimed to identification of falls and emergency communication system for the households of elderly living alone. The platform for that is system developed under the 6FP - MonAMI. The second module of the diagnostic and rehabilitation system plays a preventive role as a home rehabilitation device used for regular training of gait during daily activities. The device is based on an innovation of the motorized mechatronic shoe TUKE developed under the 7FP project SMILING. Users train their walk ability during performance of everyday tasks while solving unexpected perturbations simulating influence of external environment by surmounting the uncertainty when stepping on. The complex system is undertaking the challenge to come in market where we see an absence of preventive, diagnostic-rehabilitation centers aimed on people (elderly) with risk of fall. The end users will be rehabilitation clinics, geriatric centers, social services and condition centers, but preferably individual users, mostly seniors.

关键词： Senior citizens Footwear Monitoring Europe Legged locomotion Computers Aging

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Multiple-input cultivation model based optimization of penicillin production

Multiple-input cultivation model based optimization of penic...

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IEEE Conference on Decision and control

作者： Matej Pčolka Sergej Čelikovský Department of Control Engineering (DCE) Faculty of Electrical Engineering (FEE) Czech Technical University in Prague Praha Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Praha Czech Republic

Unlike prevailing contemporary approach considering the influx feed flow as the only crucial input influencing the final product concentration in bioprocess cultivation, the current paper considers other (non-nutritional) inputs as well. Among them, the volume withdrawal is an important option. Two types of control strategies employing this second input are considered here, each of them using it in a different way. First, the so-called quasi-double-input strategies exploit the broth withdrawal to follow a pre-determined volume profile. Second, the true-double-input strategies consider the second input as a completely independent optimization variable. Main analysis tool here is the gradient optimization numerical algorithm and its adaptations. All resulting strategies are summarized and formulated in the context of optimization, those introduced earlier (i.e., the quasi-double-input) are unified into a common general strategy. Practical complication (inadmissible volume decrease) related to withdrawal introduction is successfully addressed and the summary results show indisputable improvement gained by the non-nutrient input introduction.

关键词： Optimization Feeds Mathematical model Biomass Substrates Production Equations

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Fault tolerant adaptive estimation of nonlinear processes using redundant measurements

Fault tolerant adaptive estimation of nonlinear processes us...

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Mediterranean Conference on control and automation (MED)

作者： M. Miranda A. Edelmayer Laboratory of Unit Operations Department of Chemical Engineering Faculty of Engineering University of Los Andes Merida Venezuela Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences (ATOMKI) Budapest Hungary

This paper presents a dual layer approach for robust fault tolerant estimation of nonlinear processes using a combined adaptive extended Kalman filter and fault detection and filter reconfiguration. From the one hand, the filter is made robust in face of environment uncertainty using adaptive filtering. To this end, the filter identifies the measurement covariance by means of recursive estimation, upon which the adaptation relies, to suppress the effect of sporadic variations in the quality of measurements as well as compensates for incipient sensor faults. From the other hand, fault monitoring is continuously applied to the filter's innovation in an attempt to initiate filter reconfiguration when the adaptation mechanism alone is not able to overcome the failure situation. The discussion of the results is embedded in the application framework of state estimation of a batch distillation process.

关键词： Temperature measurement Mathematical model Estimation Technological innovation Noise Fault tolerance Fault tolerant systems

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