Parameter Estimation in Linear Electromagnetic Devices

Dülk, Ivor; Kovácsházy, Tamás

doi:10.1109/tie.2014.2374573

Cited by 19 publications

(5 citation statements)

References 33 publications

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“…The Embedded Systems Group maintains the traditional research activities of the Department in signal processing: acoustic research [109], power spectrum estimation in the presence of data loss [108], ADC testing [106,107], compensation of linear and non-linear distortion of sensors and measurement systems [111], non-invasive blood pressure measurement with increased reliability [110]. Recently the group has acquired competencies in the field of observer based surveillance systems, industrial and automotive applications of real-time embedded networking (CAN, CAN FD, FlexRay, Ethernet, IEEE 1588 precision clock synchronization, AVB, and Time Sensitive Networks), testing and verification of embedded systems, wired and wireless sensor networks, large-scale sensor integration.…”

Section: Main Research Fieldsmentioning

confidence: 99%

BME VIK Annual Research Report on Electrical Engineering and Computer Science 2015

Vajk¹,

Harsányi

Poppe

et al. 2016

Period. Polytech. Elec. Eng. Comp. Sci.

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PrefaceThroughout László Vajta, Dean of BME VIK János Levendovszky, Deputy Dean of BME VIK Department of Automation and Applied InformaticsDepartment of Automation and Applied Informatics (AUT) is one of the largest and dynamically developing departments at BME with diverse scope competences such as control theory, embedded systems, software modelling, applied software development, Internet of Things, power electronics, mechatronics, and many others. The department's main activities are education, research and development. Training versatile electrical and software engineers with solid practical knowledge is our top priority. Our profile also includes developing high quality software and hardware solutions for industry partners. All of our activities are backed by strong research background.In 2015, the department has organized the 21 st European Wireless (EW) Conference. The EW 2015 conference hosted more than 140 participants from 30 different countries. The 2015 edition of EW was aimed at addressing a key theme on "5G and beyond."The next sections summarize the key research results of the department in year 2015. IoT and Smart CityThe Internet of Things (IoT) is transforming the surrounding physical objects into an ecosystem of information that enriches our everyday life. The IoT represents the convergence of advances in miniaturization, wireless connectivity, and increased data storage, and is driven by various sensors. Application and service development methods and frameworks are required to support the realization of solutions covering data collection, transmission, data processing, analysis, reporting, and advanced querying. Our SensorHUB framework URBMOBI is a mobile environmental sensor that (i) provides temporally and spatially distributed environmental data, (ii) fulfills the need for monitoring at various places without the costs for a large number of fixed measurement stations, (iii) integrates small and precise sensors in a system that can be operated on buses, trams, or other vehicles, (iv) concentrates on urban heat and thermal comfort, and (v) aims at providing climate services and integration with real-time climate models.utilizes the state-of-the-art open source technologies and provides a unified tool chain for IoT related application and ser-URBMOBI project has been worked out between 2013 and 2015 by the following consortium: RWTH Aachen University (Germany), Netherlands Organization for Applied Scientific Research TNO (Netherlands), ARIA Technologies (France), Budapest University of Technology and Economics (Hungary), and Meteorological and Environmental Earth Observation (Italy).The SOLSUN (Sustainable Outdoor Lighting & Sensory Urban Networks) project is about to demonstrate how intelligent city infrastructure can be created in a cost-effective and sustainable way by reusing existing street lighting as the communications backbone. We apply different technologies and methods to reduce energy consumption at the same time as turning streetlights into nodes on a scalable network that is al...

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Section: Main Research Fieldsmentioning

confidence: 99%

BME VIK Annual Research Report on Electrical Engineering and Computer Science 2015

Vajk¹,

Harsányi

Poppe

et al. 2016

Period. Polytech. Elec. Eng. Comp. Sci.

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“…The electromechanical conversion element composed of PTZ has a high precision and a high response speed, but due to disadvantages such as relatively big hysteresis, the need to develop the corresponding compensation power supply, a small displacement and a high cost, currently the level of commercialization is not high [20,21]. Some studies use the electromagnetic parameters to estimate the displacement without the displacement sensor [22][23][24][25] or control valve with modern control method [26][27][28]. In order to improve the dynamic response characteristics of the displacement of the electromechanical converter, this paper proposed a new type of electromechanical converter with double push rods and analyzed and studied its dynamic and static characteristics.…”

Section: Introductionmentioning

confidence: 99%

Dynamic and Static Characteristics of Double Push Rods Electromechanical Converter

Wang

Quan

Luan

et al. 2019

Chin. J. Mech. Eng.

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Due to the influence of material characteristics and winding power, single output electromagnet has limited ability to improve the dynamic characteristic of electro-hydraulic valve. Therefore, an electromechanical converter with double push rods is proposed in this paper, which can simultaneously output two electromagnetic forces, can push or pull the valve core and sleeve according to the current direction and realize rapid operation of load. According to the electromagnetic principle and the magnetic circuit analysis method, the mathematical model and equivalent circuit of the electromechanical converter with double push rods are established. Through the finite element simulation model of the electromechanical converter with double push rods with the same magnetization directions, the changing rules of its magnetic field distribution and force-displacement behaviors are studied and analyzed. According to the analysis results, the electromagnetic mechanical parameters and mechanical structure of the electromechanical converter with double push rods are determined, and the prototype is made. The test platform for the push-pull characteristics of the electromechanical converter with double push rods is built, and its static and dynamic characteristics are tested and analyzed. The results show that the thrust and pull output characteristics of the internal and external push rods are basically consistent with the simulation output, and proportional to the current density of the coil; the push-pull hysteresis of internal and external push rods output force is less than 5%; and the dynamic time response characteristics of the displacement and force are obtained. The hysteresis effect of output force is improved effectively through the H bridge drive control circuit modulated by PWM. Compared with the displacement response of a singlewinding electromagnet with a similar volume, it can effectively improve the dynamic displacement response. Followup work will further optimize the structure of the electromechanical converter and test the corresponding pilot valve. The research results provide a new theory for improving the output characteristics of electro-hydraulic pilot valve and have an extremely high engineering application value and broad application prospect.

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“…M ANY advanced control and optimization strategies have been developed to guarantee the industrial process to achieve satisfactory closed-loop system performance even when operated under the working conditions in the presence of uncertainties [1]- [3], faults [4], [5], etc. The performance of the these strategies relies heavily on the existence of an accurate and reliable mathematical model of the process [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Variational Bayesian Inference for FIR Models With Randomly Missing Measurements

Yang

Yin

2017

IEEE Trans. Ind. Electron.

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This paper is concerned with parameter and output estimation for industrial processes described by finite impulse response (FIR) model in presence of randomly missing output measurements. The statistical models for describing the estimation problems are given and the prior distributions over unknown parameters and variables are constructed. The estimation problems with incomplete data set are formulated in the variational Bayesian framework and the problems of randomly missing measurements, overfitting, and high sensitivity of parameter estimate to noise are handled simultaneously. The iterative formulas to estimate the posterior distributions of missing output data and unknown parameters based on available process data are derived. The simulation example and the hybrid tank system experiment are performed to demonstrate the effectiveness of the proposed method.

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Parameter Estimation in Linear Electromagnetic Devices

Cited by 19 publications

References 33 publications

BME VIK Annual Research Report on Electrical Engineering and Computer Science 2015

BME VIK Annual Research Report on Electrical Engineering and Computer Science 2015

Dynamic and Static Characteristics of Double Push Rods Electromechanical Converter

Variational Bayesian Inference for FIR Models With Randomly Missing Measurements

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