Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014最新文献

{"title":"Geometric accuracy of CNC machine tools","authors":"Michal Holub, J. Knobloch","doi":"10.1109/MECHATRONIKA.2014.7018268","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018268","url":null,"abstract":"The present article is dedicated to the identification and interpretation of geometric errors of CNC machine tools. Identification of geometric errors plays a large role in the construction of the so-called “Error maps”. These maps can be used to describe the behaviour of the machine in the workspace without load or under conditions of finishing operations. Interpreting the error maps represents a tool to check the state of the machine for the user and to offer the important information for the machine manufacturer. From this information it is possible to identify “weak” points of the machine. Simultaneously, the information on the geometrical errors is used to compensate for machine tools. When constructing the maps, a selection of the measuring device and ambient conditions plays an important role. The paper focuses on the use of measuring equipment LaserTRACER and construction of the error map for the workspace of horizontal three-axis milling machine. It also describes the options of how to monitor the workspace of the machine and their mutual evaluation.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"359 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128516640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Speech recognition via STT API for autonomous mobile robot","authors":"P. Masek, M. Ruzicka","doi":"10.1109/MECHATRONIKA.2014.7018326","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018326","url":null,"abstract":"This paper deals with speech recognition system based on STT API (Speech To Text Application Programming Interface), which was mainly designed for mobile robots Human-Machine interface. This paper is based on preliminary work where one word commands were used. The solution presented in this paper uses the pre-learned database with Bayesian approach. This solution increases the success rate in command recognition against to use plain STT API itself. The major extension of previous work is recognition of whole sentences instead of one single word command. Experimental results with complete sentences are presented in this paper.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125545562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electromechanical analysis of textile structures designed for wearable sensors","authors":"V. Safarova, Kveta Malachova, J. Militký","doi":"10.1109/MECHATRONIKA.2014.7018294","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018294","url":null,"abstract":"This paper reports electromechanical analysis of basic conductive textile structures designed for wearable sensors. Conductive textile structures usually exhibit two types of resistance: length resistance and contact resistance. Firstly electrical and mechanical properties of unstressed conductive yarn were investigated under practical use conditions. After that three experiments were conducted to examine resistance of single conductive yarn, two overlapped yarns and chain under unidirectional extensile forces.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124243125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Building a scaled model of autonomous convoy powered by ARM mbed microcontrollers","authors":"S. Vechet, J. Krejsa, M. Ruzicka, P. Masek","doi":"10.1109/MECHATRONIKA.2014.7018349","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018349","url":null,"abstract":"Presented paper presents ARM mbed microcontroller usage as a control unit in student's autonomous convoy project. The ARM mbed devices are based on 32-bit ARM Cortex-M microcontrollers and are widely used for a number of students and science projects. Proper selection of appropriate HW platform is typical issue, especially nowadays when students can choose from many different and low-cost platforms such as Raspberry PI, Beagle Bone, Arduino or TI Launchpad. In presented paper we would like to show the working solution of control unit for autonomous vehicle based on ARM mbed and show why we chose this platform from mentioned HW competition. The scaled model of an autonomous convoy project is made, consisting of a number of vehicles and it is necessary to have a powerful control unit to handle all calculations.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117152658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improvement of active hinge of the car bonnet","authors":"Bohuslav Bušov, M. Bartlová","doi":"10.1109/MECHATRONIKA.2014.7018323","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018323","url":null,"abstract":"The article presents a partial use of TRIZ methodology and Goldfire Innovator® for improving the active hinge of the car bonnet. The hinge is one of many components of complex measures of EU for an increase the active pedestrian protection. The measures result from the EuroNCAP regulation which has to be observed within testing the safety of vehicles in a collision with pedestrians, especially in city traffic, in pedestrian crossings, where the most accidents are occurred [1]. The article introduces a significant improvement in product design system - the active hinge of the car bonnet. The active hinge must lift up the rear part of the bonnet in appropriate short time to extend the deformation space between the bonnet and the rigid parts of the engine compartment. Fast and controlled lifting of the bonnet mitigates the consequences of collision between pedestrian and a vehicle. VA-Value analysis of the existing hinge design has revealed the least valuable components and complete one “weak” subsystem. Trimming procedure has brought the possibility to delegate functions of the “weak” subsystem into new redesigned element - the actuator. The new system of active hinge to obtain dynamicity (and function of the bonnet “to lift-up”) as well as solidity (and function of the bonnet “to fix” the bonnet basic position), uses for both contradictory functions a very fast linear actuator with ball lock application. The simplicity of a new active bonnet hinge has led to fast and cheap preparation of the experiment, prototype testing and introduction of new solution of the active hinge in automotive company.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125004645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of PMSM-based electric motor test stand","authors":"J. Hrbáček, V. Singule, P. Houška","doi":"10.1109/MECHATRONIKA.2014.7018327","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018327","url":null,"abstract":"A part of the CAAEEC project is focused to create a modern test stand working on the principle of an electric brake and intended for testing of electric drive systems up to ca. 1 kW. The main difference and advantage of this test device compared to traditional dynamometers is its electronic controllability with a low latency - the requested instantaneous brake torque can be dynamically set based on measured quantities of the system under test; Field-Oriented control is employed. In this paper, a proof-of-concept implementation of the test system is described which is not expected to achieve full load power.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132654465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechatronics for water injection in SI engine","authors":"Daniel Busuttil, Glenn Camilleri, M. Farrugia","doi":"10.1109/MECHATRONIKA.2014.7018276","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018276","url":null,"abstract":"Internal combustion engines are generally speaking mechanical devices but have benefitted tremendously from electronic controls. The electronic implementation of fuel injection and spark ignition on an older single-cylinder JAP engine through the use of a programmable Engine Control Unit (ECU) is discussed in this work. Furthermore the additional electronics required for water injection and boost control that were not supported by the programmable ECU are detailed. The injection of water into the Spark Ignition (SI) engine was the main objective of this study but the solution for this task through the use of electronics and LabView provided a robust and flexible system whereby the whole range of parameters could be explored. The engine was electronically controlled by the ECU through the sensing of 36 teeth that were machined in the dynamometer coupling and by having the cam sensor triggered by the maximum lift of the tappet of one of the valves. Water injection electronic circuitry was designed and built from scratch. The variable duration water injection pulse was generated by a 555 timer IC in Monostable (configuration) mode that was triggered every two engine revolutions by the fuel pulse. The duration of water injection per cycle in milliseconds was recorded by the ECU through the use of a dual potentiometer that controlled both the RC value for the 555 timer and also generated a voltage that varied linearly with water pulse duration for data logging by the ECU. Boost control of the engine from the laboratory compressed air supply was first tried to be solved by mechanical means namely manual control, an external wastegate (used as a proportional valve) and also different sized pressure regulators, however these attempts were unsuccessful. A very straightforward but ultimately functional solution was the use of an ON/OFF solenoid valve that opened compressed air (6 bar nominal) to a large (approx. 1m3) tank that fed the SI engine. The ON/OFF control was performed through LabView and a specifically built solenoid driver circuit. The control of air temperature into the SI engine was also electronically controlled through ON/OFF control from LabView which controlled the water temperature of a charge-air heat exchanger. These systems were integrated together and performed as desired to test all desired water injection durations, boost levels, air inlet temperatures, spark timing and fuel quantity.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131755843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of suitability of tracking marks for optical measurement of displacement","authors":"Luboš Kotek, Michal Holub, J. Vetiška, Kamil Subrt, Zdenek Hadaa, P. Blecha","doi":"10.1109/MECHATRONIKA.2014.7018308","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018308","url":null,"abstract":"Optical methods for measuring displacement is a key enabling technology allowing evaluate vibration of the light weighted objects. In optical evaluation of vibration of object displacement with high speed camera, systematical errors occurs in determining the displacement because of the tracking mark properties. The present article compares the results of optical tracking of four most common tracking marks (Filmmakin, Ridgeline creative, Eye fish and Blurry vision) and also own designed tracking mark (FMEIII). To verify the suitability of different tracking marks with high-speed camera, the test stand were constructed and measured data were compared to highspeed laser interferometer measurement.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126350329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integration of force sensing for robotic generic assembly","authors":"M. Farrugia","doi":"10.1109/MECHATRONIKA.2014.7018283","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018283","url":null,"abstract":"A force sensor was integrated into a robotic cell and the sensor data was made available in real-time for the robotic arm. Integration of the extra sensory data was done through an external supervisory computer system that was developed as a generic controller to the robotic arm. The supervisory computer system was implemented using transputer modules running parallel processes and programmed in C programming language. The generic assembly meant that the robot arm used, an ADEPT using Val II as a programming language, was used in a very basic form whereby the required task was split up into more fundamental operations of feed transport and mate as proposed by Selke [1]. Manipulators often have programming languages which apply to only a specific brand or type of manipulator, in fact this is the problem that has led to the need of a generic controller for assembly. The generic controller was designed to achieve the necessary assembly task irrespective of the specific manipulator programming language. Testing of the developed hardware and software was performed on both a toy car assembly system and a peg in hole setup. Both testing setups were successfully assembled using real time force data. The insertion force traces for the peg in hole tests is reported here. Further development in intelligent assembly using statistical methods is also proposed.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134304685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Implementation of SiC inverter for high frequency, medium voltage applications","authors":"O. Sivkov, M. Novak","doi":"10.1109/MECHATRONIKA.2014.7018306","DOIUrl":"https://doi.org/10.1109/MECHATRONIKA.2014.7018306","url":null,"abstract":"This paper describes the experiments with a custom build high frequency SiC inverter. The inverter uses the CCS050M12CM2 module with SiC MOSFET (1200V, 50A). A comparison of SiC MOSFET and Si IGBT modules both from datasheets and different scientific papers showed that SiC MOSFETs have higher efficiency, smaller losses and are capable to work with higher frequency than Si IGBTs. The characteristics of SiC MOSFET and Si IGBT inverter were measured in our laboratory and showed that SiC MOSFET had smaller power static losses and switching losses than Si IGBT, SiC MOSFET had higher efficiency and can operate under higher switching frequency than Si IGBT. The switching characteristics of SiC module have been measured up to a frequency of 30 kHz. The problem of gate-source voltage overshoot is considered here; it is caused by parasitic capacitances and inductances. The correct value of damping resistor is tuned to suppress overshoot.","PeriodicalId":430829,"journal":{"name":"Proceedings of the 16th International Conference on Mechatronics - Mechatronika 2014","volume":"91 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133876198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}