Wyniki wyszukiwania - BazTech

1

LoRaWAN networks in automotive applications

Śmieja M., Duda K., Mamala J.

Journal of KONES

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2018

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Vol. 25, No. 3

431--435

EN

Development of IoT is tightly coupled with the use of the wireless communication solutions. Nowadays there are several standard wireless protocols, which are responsible for carrying information. The increase of the communication traffic tends to specialize the kind of used data interchange methods for the sake of demanded size of data packet, frequency of connections, meaning of the data, security and safety of the transmission as well as many others. One of the intensively spreading wireless networks is LoRaWAN. Because of its low energy consumption, long distance range, and high flexibility, it seems to be very effective solution to apply in the field of road traffic. The article presented the base features of LoRaWAN as well as the conception of virtual local traffic system based on the data yield from the board systems of cars. Accessed from OBD information about f. e.g. temporary cars speed or accelerations associated with their current position can be significant factor in creating the real image of the traffic situation.

2

ZigBee phase shift measurement approach to mobile inspection robot indoor positioning techniques

Śmieja M.

Diagnostyka

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2018

|

Vol. 19, No. 3

101--107

EN

This paper presents the new approach to ZigBee ranging against the background of currently using techniques. This new approach involves a phase shift measurement instead of standard time of arrival or radio signal strength approaches. The ZigBee device used in this study and preliminary tests of ranging and positioning performed using phase shift measurements are presented. The positioning results encourages for further research on the performance verification and algorithms for processing of ranging results.

PL

W artykule przedstawiono zmodyfikowane w stosunku do najczęściej obecnie stosowanych podejście do określania położenia obiektów wykorzystujące propagacje sygnały w protokole ZigBee. Typowe rozwiązania stosowane aktualnie w systemach lokalizacji opartych o bezprzewodowe sieci wymiany danych bazują na pomiarach czasu propagacji lub mocy sygnału. Opisane w artykule podejście odwołuje się do pomiaru przesunięcia fazowego sygnału wynikającego z wykorzystania do transmisji różnych częstotliwości. Przedstawione w artykule wstępne wyniki eksperymentów uzasadniają dalsze prace nad wykorzystaniem przedstawionej metody w zakresie opracowania algorytmów obliczeniowych pozycjonowania oraz weryfikacji efektów w warunkach rzeczywistych.

3

Assessment of usefulness of the mems-based integrated navigation unit in car navigation

Uradziński M., Rapiński J., Tomaszewski D., Śmieja M., Guo H., Yu S., Jian X.

Technical Sciences / University of Warmia and Mazury in Olsztyn

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2017

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nr 20(4)

321--331

EN

Due to the development of MEMS, there is an opportunity to build a low-cost integrated navigation systems, operating independently of horizon visibility. This paper presents the proposal of an integrated GPS/IMU platform using MEMS technology. In order to verify the performance of a system built at the University of Warmia and Mazury, an experiment was conducted. In this experiment a precise Javad GNSS receiver, commercial grade GPS/IMU XW – ADU5660 and own-built system were used. The experiment was conducted to compare the results obtained from self built device with the working military integrated navigation unit. During the study all three devices were mounted inside moving vehicle. The car drove route inside the Kortowo campus, during which, all equipment performed measurements. Then, the results from both integrated systems were compared with RTK (Real Time Kinematic) results from Javad receiver. Experiments prove that the performance of own device is comparable to the commercial device.

4

Regression SVM for incomplete data

Struski Ł, Śmieja M., Zieliński B., Tabor J.

Schedae Informaticae

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2017

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Vol. 26

23--35

EN

The use of machine learning methods in the case of incomplete data is an important task in many scientific fields, like medicine, biology, or face recognition. Typically, missing values are substituted with artificial values that are estimated from the known samples, and the classical machine learning algorithms are applied. Although this methodology is very common, it produces less informative data, because artificially generated values are treated in the same way as the known ones. In this paper, we consider a probabilistic representation of missing data, where each vector is identified with a Gaussian probability density function, modeling the uncertainty of absent attributes. This representation allows to construct an analogue of RBF kernel for incomplete data. We show that such a kernel can be successfully used in regression SVM. Experimental results confirm that our approach capture relevant information that is not captured by traditional imputation methods.

5

The conception of modular monitor of car exploitation parameters

Śmieja M., Ziejewski K., Wierzbicki S., Mamala J.

Journal of KONES

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2017

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Vol. 24, No. 4

321--326

EN

Current tendencies in electronics and informatics development going towards Internet of Things (IoT), Big Data or Data Cloud technologies create new possibilities in acquiring and utilizing data. The article presents the concept of modular monitoring of vehicles operating parameters. Presented device registers data from the OBD system and a set of independent, configurable sensor modules. Data from the OBD system is acquired via protocol. CAN Bus with a DLC connector. The signal from sensor modules is transferred via a Bluetooth wireless network. The registered data can be storage on board as CD card memory or alternatively on a typical user interface such as laptop, tablet, cell phone etc. The communication with the user interface is realised with USB. Moving vehicles modular monitoring system presented in the article can be used to attain a fuller representation of the vehicles state in relation to its environment. The base assumption of the device is maximal flexibility in term of sensors versality as well as possibilities of assembly on board. In connection with the concept, a prototype of the device was made and tested with an inertial measurement unit (IMU) module and a pressure sensor. Appliances modules are based on Cortex M4 and M0 processing units. A users interface in LabVIEW and examples of registered signals are showed at the end of the article.

6

CAN network in real time on board systems

Śmieja M., Wierzbicki S., Mamala J.

Combustion Engines

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2017

|

R. 56, nr 4

211--214

EN

The network system of data exchange between the various components is an inherent element of every car. Because of the specific and different requirements for data transfer between specific devices, currently used communication protocols have different properties of performance, security, and degree of determinism. The paper presents the increasing complexity of the data exchange system based on the example of the latest requirements for digital tachographs. The article describes also the data transmission initialization methods in the context of network data exchange organization. The hybrid use of time triggering and event triggering mechanisms has been presented in relation to the operation of the CAN network under increased real-time conditions requirements implemented as TTCAN (time triggered CAN).

7

The new data exchange facilities with CAN-FD

Śmieja M., Duda K., Mamala J.

Journal of KONES

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2016

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Vol. 23, No. 4

527--533

EN

The modern vehicles demand more and more data exchange to coordinate, control and monitor functions of on board system. The variety of networks applied in these systems is featured mainly by the bandwidth and time determinism. The development electronic information and network sciences find its reflection in the new and new automotive implementations. The last significant step towards the increase the throughout put of the on board network channels are works on CAN-FD. CAN is now the most common network present on board. It helps to manage the maintenance with the numerous subassemblies of the modern car. Next to the many features making CAN so useful and popular, there is a bandwidth limitation, which slows down further implementation of it. The new CAN-FD specification adds new properties that extend the possibilities of CAN as automotive network protocol. These are: different speed transmission in the arbitration phase and in the data phase during the message transmission as well as the extending the maximum size of data filed of the frame from 8 (CAN) to 64 (CAN-FD). In the paper there have been presented the limitations of existing CAN protocol usage, the explanation of the basics of the arbitration mechanisms and the response of the scientist and engineers to cope with it, as well as the formal result outlined in the CAN-FD specification.

8

The impact of the share of CNG on the combustion process in a dual-fuel compression-ignition engine with the common rail system

Wierzbicki S., Śmieja M., Mikulski M.

Journal of KONES

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2016

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Vol. 23, No. 2

415--422

EN

The struggle against global warming necessitates the search for new sources of energy, which limit the emission of carbon dioxide into the atmosphere. Among various fuels used to supply energy nowadays, the importance of natural gas is constantly growing. This is caused by the fact that this fuel is characterised by the lowest share of coal among all fossil fuels. Because of its properties, natural gas can be used directly to power spark-ignition engines. The use of this fuel for compression-ignition engines on the other hand is limited due to the high autoignition temperature of methane. Currently, research is being conducted in numerous centres on the possibility of using fuel gases to power CI engines operating in a dual-fuel system. The present article discusses the impact of the share of CNG in the supply dose on the operation of a CI engine. An engine with the Common Rail injection system programmed for mono-fuel operation was used in the research. Based on the conducted tests it has been proved that supplying this type of engine with fuel gas considerably changes the course of the combustion process, which is caused by the fact that the gas and air mixture present in the combustion chamber starts burning now of the autoignition of the first portion of liquid fuel. The obtained test results confirm the necessity to change the injection parameters of the pilot dose of diesel fuel (the timing angle of injection and the pressure of fuel) in cases when this type of engine operates in a dual-fuel system.

9

The correctness function of intelligent device recording in aspect used and their safety

Rychter M., Sułek P., Śmieja M.

Journal of KONES

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2016

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Vol. 23, No. 3

419--426

EN

The duty of applying recorders in the road transport was implemented in states of the European Union on regulations (EWG) no. 3820 / 85 on harmonisations of some social welfare legislation referring to the transport, which was changing with regulation (EWG) no. 3821 / 85 on recorders applied in the road transport. The preamble unequivocally that in order to ensure effective control of the recording devices used in road transport, they must be reliable, easy to use and constructed to minimize any possibility of fraud. The duty of implementation of the digital tachograph is also considered in the context of improving road safety. Through the analysis of the records of the registering devices can be defined in each specific case of speeding by more than the allowable value in the area. Technical requirements for your device recorded in the resolution, which defines the main parameters, are measured, among things other, the traversed path length of the car, speed, time driving, other periods of work, politeness of the driver and the correct operation of the check authorized for those authorities. The duty of States-members of the European Union is identify organizations that will conduct research and verification of the recording equipment together will also introduce solutions that improve their security. This article contains responsibilities after part rest on the drivers of vehicles takes the issues of system security and optimum performance of recording devices and consequences may arise from non-compliance with regulations and them subjecting to tachograph manipulation.

10

Experimental tests on a dual fuel compression-ignition engine powered by biogas with a varying chemical composition

Wierzbicki S., Śmieja M., Kozłowski M., Nieoczym A., Krzysiak Z.

Journal of KONES

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2016

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Vol. 23, No. 3

549--554

EN

Biogas is among the fuels whose significance in the general energy balance will increase. These results from the fact that it may be produced from various kinds of waste materials, and it is therefore considered a renewable fuel of the second generation. Because of its properties, biogas may be used directly to power spark-ignition engines. Nonetheless, numerous tests are underway involving the possibility of using biogas to power compression-ignition engines. In order to use biogas, whose main combustible component is methane, in compression-ignition engines, it is necessary to use a dual fuel power supply system. With such a system supplying power to the engine, the gas and air mixture in the cylinder is ignited by a small dose of liquid fuel. This paper presents a fragment of the research on the use of biogas with a varying chemical composition for powering compression-ignition engines. The described tests were conducted using a one-cylinder compressionignition engine mounted on an engine test stand. The fuel gas consisted of a mixture of natural gas and carbon dioxide; the share of each individual component was regulated from the station, which controlled the operation of the whole test stand. The developed control system also enabled the adjustment of the operating parameters of the engine test stand and the parameters of the injection of liquid fuel, such as the injection pressure, the timing angle of injection and the size of the dose. The results presented in the paper show the impact of the individual control parameters of the engine on the value of the engine’s torque and the amount of toxic compounds in the exhaust fumes.

11

Data exchange in a tachograph system as the element of the cybersecurity of the modern car

Śmieja M., Rychter M., Sułek P.

Journal of KONES

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2016

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Vol. 23, No. 4

535--540

EN

A numerous flows of data in the modern vehicle are necessary to maintain the complexity of systems included on-board. Unfortunately, along with the increase of the road security and many useful facilities there are arising vulnerabilities coming from cyberattacks and reliability of the communication systems. Because many components are based on highly advanced E/E technology, the security measures known from IT are more and more important. The data encryption mechanisms, used in IT for memory content and data transfer protection, are getting important in automotive. In the paper there are presented considerations connected with the cybersecurity of the vehicle, as a part of the transportation system, as well as the effect of the process of the production. In the article authors focused on the encryption of the communication between the tachograph device and the motion sensor. The normal operation of the interface tachograph-sensor follows the operation of pairing based on authentication and identification services. The pairing operation takes place in an authorized workshop and its goal is to check the legality of devices paired, and the so-called establishment of the session key, which contains encryption keys used for 3DES encryption. The description of data encryption for the motion sensor, presented in the article, is the example of the bunch of solutions required for the modern vehicle.

12

Mixture of Metrics Optimization for Machine Learning Problems

Wiercioch M., Śmieja M.

Schedae Informaticae

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2015

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Vol. 24

83--92

EN

The selection of data representation and metric for a given data set is one of the most crucial problems in machine learning since it affects the results of classification and clustering methods. In this paper we investigate how to combine a various data representations and metrics into a single function which better reflects the relationships between data set elements than a single representation-metric pair. Our approach relies on optimizing a linear combination of selected distance measures with use of least square approximation. The application of our method for classification and clustering of chemical compounds seems to increase the accuracy of these methods.

13

Wykorzystanie współczynników rozmycia precyzji przy nawigacji wewnątrz budynków

Rapiński J., Śmieja M., Turski A.

Logistyka

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2015

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nr 3

4123--4129, CD 1

PL

Artykuł przedstawia rozważania na temat możliwości zaadaptowania współczynników DOP znanych z pomiarów GNSS do nawigacji wewnątrz budynków. W sposób graficzny przedstawiony jest przykład obrazujący, jaki wpływ ma zmienna geometria węzłów służących jako punkty odniesienia na współczynniki DOP a co za tym idzie na dokładność wyznaczenia pozycji. Zaproponowany został również algorytm służący do weryfikacji czy dołączenie dodatkowego węzła do obliczeń da wymierną poprawę współczynników DOP.

EN

This paper presents some considerations about the possibility to adapt DOP factors (known from GNSS surveys) to indor navigation. It depicts the impact of geometrical distribution of nodes on DOP factors, which can be translated to positioning accuracy. The algorithm of verification if new node improves significantly DOP factors is also presented.

14

Układy jezdno-napędowe kombajnów zbożowych na podstawie wybranych modeli maszyn

Mazurek K., Turski A., Rapiński J., Śmieja M.

Logistyka

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2015

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nr 3

3136--3140, CD1

PL

W pracy podjęto próbę zebrania i usystematyzowania wiedzy dotyczącej układów napędowych kombajnów zbożowych. Opisano podstawowe wymagania stawiane kombajnom zbożowym oraz istotę działania mechanizmów jezdno-napędowych. Przedstawiono stosowane uprzednio i obecnie technologie konstrukcji tychże układów, ich budowę oraz podstawowe wady i zalety występujące w każdym z przedstawionych rodzajach układu. Na podstawie dwóch wybranych modeli maszyn przedstawiono schematycznie budowę układu napędowego hydraulicznego oraz hydraulicznego uproszczonego. Ponadto przedstawiono ekonomiczne oraz eksploatacyjne różnice pomiędzy przedstawionymi konstrukcjami. Podsumowując stwierdzono, iż najszersze możliwości rozwoju mają układy w pełni hydrauliczne.

EN

This paper attempts to collect and systematize knowledge regarding drive systems of combine harvesters. The article describes the basic requirements for combine harvesters and the essence of the mechanisms of drive systems. Modern and previously used technologies of structure of these systems, their construction as well as basic advantages and disadvantages existing in each of the presented types of the system are presented. On the basis of the two selected models of machines is schematically shown the construction of a hydraulic drive system and a simplified hydraulic system. Furthermore, the paper shows economical and maintenance differences of the presented structures. In conclusion, it was found out that the widest development opportunities have the fully hydraulic systems.

15

Przepływ materiałów w magazynach przedsiębiorstwa przemysłu wydobywczego

Nieoczym A., Krzywonos L., Madleňák R., Rapiński J., Śmieja M.

Logistyka

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2015

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nr 3

3504--3511, CD 1

PL

Procedury zamówień materiałów w firmie wydobywczej podlegają wielostronnej kontroli. Każde zamówienie przechodzi przez szczeble struktury decyzyjnej, które są zróżnicowane w zależności od oddziału zamawiającego. W strukturze tej ważne miejsce zajmuje branżysta, który ma wyłączność zamawiania towaru z określonej grupy towarów. Prace działu zamówień i zaopatrzenia są zinformatyzowane. Zapytania ofertowe oraz zakupy opierają się o platformę „Logintrade” zaś działania magazynu wspiera program „Edinet” oraz „Magazyn”.

EN

Materials procurement procedures in mining enterprises are subject to multilateral control. Each order goes through levels of decision-making structures, which vary depending on the branch of the customer. In this structure occupies an important place “brancher”, which has exclusive rights to order goods from the ranges of products. Work orders and supply department are computerized. Inquiries and purchases are based on the platform of "Logintrade" magazine activities supporting the "Edinet" and "Storage".

16

Projekt oraz pierwsze testy zintegrowanej platformy ewaluacyjnej GPS/INS

Tomaszewski D., Rapiński J., Śmieja M.

Logistyka

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2015

|

nr 3

46--49

PL

W artykule przedstawiono wyniki pierwszych testów platformy ewaluacyjnej, składającej się z odbiornika GPS oraz zintegrowanego modułu IMU, zbudowanej w instytucie geodezji Uniwersytetu Warmińsko - Mazurskiego. Opisano budowę oraz zasadę działania skonstruowanego urządzenia. Szczegółowo przedstawiono wszystkie główne elementy konstrukcji (tj. odbiornik GPS LEA-6T, moduł 9 Degrees of Freedom - Razor IMU, mikro-kontroler ATMEL AT90CAN128) oraz uzasadniono ich wykorzystanie. Przedstawiono dokładny opis elementów zamontowanych składających sie na moduł IMU. Następnie opisano i przeprowadzono szereg doświadczeń mających na celu sprawdzenie funkcjonalności zaproponowanych rozwiązań. Do tych doświadczeń należało: określenie trajektorii ruchu odbiornika oraz sprawdzenie zgodności obserwacji GPS z odczytami modułu IMU. Z przeprowadzonych analiz wynika, iż skonstruowane urządzenie może być wykorzystywane do nawigacji. Przedstawiona platforma ewaluacyjna pozwoli na zbudowanie funkcjonalnego odbiornika GPS/IMU.

EN

This paper presents the results of preliminary tests of evaluation platform consisting of the following units, i.e. a GPS receiver and integrated IMU module, constucted at the University of Warmia and Mazury, Institute of Geodesy. The article provides some details about the structure and principles for running of the constructed device. The module consists of several major units (i.e. GPS receiver LEA - 6T , module 9 Degrees of Freedom – Razor IMU, the micro - controller ATMEL AT- 90CAN128 ). There is a thorough description of the elements that make up the mounted IMU module. For the purpose of evaluating the functionality of the proposed solutions, several tests were performed and decribed. Among these experiments one can count designation of autonomous position of the receiver, defining the receiver trajectory, calculation of static session and evaluation of compatibility of GPS with the readings of the IMU module. The results obtained during the project show that this device can be used not only for navigation, but also for surveying. The presented evaluation platform will allow to build a functional GPS/IMU receiver.

17

Możliwości wykorzystania naziemnych nadajników sygnału GNSS w zastosowaniach automotive

Rapiński J., Cellmer S., Śmieja M., Caban J.

Logistyka

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2015

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nr 3

4118--4122, CD 1

PL

Artykuł przedstawia sposób modyfikacji depeszy nawigacyjnej systemu GNSS w celu dołączenia do sygnału informacji o położeniu naziemnego nadajnika wspomagającego konstelację satelitów. Do tego celu wykorzystane są nieużywane słowa w depeszy nawigacyjnej. Przedstawiono również schemat przepływu i przetwarzania danych efemerydalnych w nadajniku PL.

EN

The article presents method of modifying GNSS navigation message in order to include in the signal the information about the location of the terrestrial transmitter. The main role of this transmitter is to support a constellation of satellites. For this purpose unused words in the navigation message are modified. The paper also presents a flow diagram of the ephemeris data processing, in a terrestrial transmitter.

18

Wykorzystanie protokołu Ethernet do komunikacji w systemach diagnostyki pokładowej pojazdów

Śmieja M., Wierzbicki S., Mamala J.

Combustion Engines

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2015

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R. 54, nr 3

982--987

PL

System diagnostyczny jest źródłem informacji o stanie pojazdu w postaci symptomów diagnostycznych w formie danych pozyskiwanych wprost z sensorów, przetworzonych informacji diagnostycznych lub gotowych decyzji wpływających na funkcjonowanie diagnozowanego obiektu. Mając na względzie znaczenie tych informacji dla bezpiecznej i efektywnej eksploatacji pojazdu na obsługujące je systemy komunikacji nakłada się określone wymagania dotyczące wiarygodności i przepustowości informacyjnej. Klasycznym obecnie protokołem wymiany danych w zakresie diagnostyki OBD jest sieć CAN. Wzrastająca złożoność układów napędowych pod względem ich sterowania oraz ewolucji w stronę systemów hybrydowych czy wykorzystania alternatywnych źródeł zasilania wiąże się z potrzebą zwiększenia przepustowości sieci pokładowych obsługujących te obiekty od strony systemów diagnostycznych. Jednym z najbardziej realnych scenariuszy zastąpienia CAN w systemach diagnostyki pokładowej wydaje się być zastosowanie szeroko wykorzystywanego w wielu poza motoryzacyjnych obszarach protokołu Ethernet. Liczne doświadczenia z Ethernet 802.3 znajdują swe odbicie w podejmowanych przez środowiska inżynierskie działaniach w kierunku aplikacji tego protokołu w systemach OBD.

EN

Diagnostic system is a source of informations about the state of a vehicle. The diagnostic symptoms are in the form of raw sensor data, processed diagnostic informations or decisions inflicting object being diagnosed. Taking into account the meaning of this informations for safe and efficient use of a vehicle, the requirements for the reliability and information capacity are put on the systems that support them. A standard protocol for data exchange in the area of OBD diagnostics is CAN. Increasing complexity of drive systems control and their evolution towards hybrid systems or alternate power sources envolves the increase of the onboard network transfer rate (which supports this objects diagnostics). One of the most plausible scenarios is replacing the CAN in onboard diagnostics is the application of widely used in other areas Ethernet protocol. Numerous experiences (performed by various engineers) with Ethernet 802.3 founds its reflection in application of this protocol in OBD systems.

19

Effect of CO2 content in CNG on the combustion process in a dual-fuel compression ignition engine

Wierzbicki S., Mikulski M., Śmieja M.

Combustion Engines

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2015

|

R. 54, nr 3

91--101

EN

Seeking alternative sources of energy for its more effective use, reducing emissions of toxic pollutants to the atmosphere and counteracting global warming are nowadays the major areas of development in the power industry, including the design of combustion engines. Currently, the research into the use of new fuels, which may be effective sources of energy, is performed by many scientific centres. The use of biogas for production of energy in cogeneration systems is one of the ways for improvement of energy balance. In the research described herein, a dual-fuel compression ignition engine was fuelled with gaseous fuel with variable CNG and CO2 ratios. The tests were performed for engine fuelling controlled by both an original controller with the software optimised for single-fuel operation and for the injection of a pilot dose of diesel controlled by a dedicated controller enabling the adjustment and control of the injection and dose parameters. This paper presents the effect of carbon dioxide content in gaseous fuel on the combustion process and emission of toxic compounds in the engine examined.

PL

Poszukiwanie alternatywnych źródeł energii, zwiększenie efektywności jej wykorzystania, a także zmniejszenie emisji związków toksycznych do atmosfery i walka z globalnym ociepleniem są głównymi współczesnymi kierunkami rozwoju przemysłu energetycznego, w tym również silników spalinowych. Obecnie w wielu ośrodkach naukowych prowadzone są badania nad wykorzystaniem nowych paliw, które mogą być efektywnym źródłem energii. Jednym ze sposobów poprawy bilansu energetycznego jest wykorzystanie biogazu do wytwarzania energii w układach kogeneracyjnych. W opisanych w artykule badaniach dwupaliwowy silnik o zapłonie samoczynnym zasilany był paliwem gazowym o zmiennych proporcjach CNG i dwutlenku węgla. Badania przeprowadzono przy sterowaniu zasilaniem silnika zarówno przez oryginalny sterownik oprogramowany do pracy jednopaliwowej, jak i przy sterowaniu wtryskiem dawki pilotującej oleju napędowego przez dedykowany sterownik umożliwiający regulację i kontrolę parametrów wtrysku tej dawki. W artykule przedstawiono wpływ zawartości dwutlenku węgla w paliwie gazowym na przebieg procesu spalania oraz emisję związków toksycznych badanego silnika.

20

Sterowanie układem zasilania silnika o zapłonie samoczynnym w środowisku rapid-prototyping z wykorzystaniem LabView

Wierzbicki S., Śmieja M.

Pomiary Automatyka Kontrola

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2014

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R. 60, nr 11

1049--1052

PL

Układ sterujący zasilaniem to najistotniejszy element silnika spalinowego decydujący o jego osiągach. W artykule opisano budowę laboratoryjnego układu sterowania zasilaniem silnika z wykorzystaniem narzędzi naukowo-inżynierskich. Opracowany układ oparto na oprogramowaniu LabView i sterowniku rodziny CRio wykorzystujący układy FPGA i mikrokontroler rodziny PowerPc. Zawarte w artykule przykładowe wyniki sterowania potwierdzają skuteczność prezentowanego podejścia do projektowania tego typu stanowisk.

EN

Modern control systems for fuel feeding to self-ignition engines are complex, both in terms of their structure and software. Their complexity virtually prevents their use for controlling engines at test stands, where the major expected features include easy access and control of selected engine parameters. Therefore, in order to study such objects, it is necessary to develop control systems adapted to specific needs [4, 9]. In order to ensure proper operation of an engine and to reproduce the actual conditions of its operation, it is necessary to control its input parameters precisely as well as ensure the complex series of impulses which control fuel injections (Fig. 6). This paper describes the structure of a LabView-based Common Rail-type laboratory controller of a feeding system. The controller was developed based on a CompactRio programmable controller using FPGA systems and PowerPC family microcontrollers, with real-time operation capability. A Driven DI card was used as an injection control output module, which is a card dedicated for controlling this type of elements. The parameters of a PID regulator, which controls the pressure regulation valve, were also selected to ensure that the set fuel pressure is maintained regardless of the operating conditions. The structure of the controller developed in the study is open, which enables its use in different kinds of research and its expansion by additional control systems, as well as recording the operation parameters.