July 18, 2018

18th International EUSPEN Conference 2018, Venice, Italy

Employees of the Precision Engineering Laboratory actively participated at the 18th EUSPEN International conference, held from June 4th to June 8th 2018 in Venice, Italy.

In the session Advances in Precision Engineering, our team presented three papers:

Characterisation of positioning performances of a mechatronics device actuated via a frictionless voice-coil actuator.‘ by authors E. Kamenar and S. Zelenika;

Experimental approach to establishing a model of nanoscale friction‘ by authors M. Perčić, S. Zelenika, I. Mezić, R. Peter and N. Krstulović;

Koopman-based model predictive control of a nanometric positioning system‘ by authors E. Kamenar, M. Korda, S. Zelenika, I. Mezić and S. Maćešić.

  

Projekt predstavljen u Jutarnjem listu

Projekt razvoja rehabilitacijskog uređaja koji se uspješno provodi na Tehničkom fakultetu je predstavljen na mrežnim stranicama Jutarnjeg lista:

http://native.jutarnji.hr/hrvatskistvaratelji/

http://native.jutarnji.hr/hrvatskistvaratelji/tehnicki.html

“Center for gifted children” has visited CMNST

On February 15, 2018, gifted children age 4 to 8 of the city of Rijeka, their parents and their teachers from the NGO “Center for gifted children” visited the CMNST, i.e. the Laboratory for Precision Engineering and Micro- and Nanosystems Technologies as well as the Laboratory for Quantum and Nonlinear Optics. The staff of the CMNST introduced them to demonstrative examples and applications of micro- and nanotechnological instrumentation, devices and scientific work in general.

Activities of the Precision Engineering research group presented in the La voce del popolo daily

The daily newspaper La voce del popolo published in Rijeka presented on January 18, 2018, the activities of the Precision Engineering research group, especially in the field of the micro- and nanotechnologies, through an interview with the group leader Prof. D. Sc. Saša Zelenika.

Students of the High-school from Pazin visit the CMNST of the University of Rijeka

On November 9th 2017 the junior students of the High-school Jurla Dobrile Pazin, visited the laboratories of the Centre for Micro- and Nanosciences and Technologies (CMNST) and the Bura supercomputer at the campus of the University of Rijeka – where they had occasion to get acquainted with the state-of-the-art laboratory equipment and the scientific work carried on this equipment. The students learned thus about various micro- and nanosystems developed within the CMNST and the characterisation of their properties from the physics, engineering and bio-chemical standpoint, expressing their enthusiasm for the chance they have been given as well as the wish to pursue their future university studies at the University of Rijeka – and hence to use professionally the devices they have seen.

Students of High-school in Italian language in Rijeka visit the CMNST of the University of Rijeka

On November 2nd 2017 the junior and senior high-school students of the High-school in Italian language in Rijeka, following a sciences and mathematics study program, visited the laboratories of the Centre for Micro- and Nanosciences and Technologies (CMNST) and the Bura supercomputerat the campus of the University of Rijeka – where they had occasion to get acquainted with the state-of-the-art laboratory equipment and the scientific work carried on this equipment. The students learned thus about various micro- and nanosystems developed within the CMNST and the characterisation of their properties from the physics, engineering and bio-chemical standpoint, expressing their enthusiasm for the chance they have been given as well as the wish to pursue their future university studies at the University of Rijeka – and hence to use professionally the devices they have seen.

   

Projekt Tehničkog fakulteta dobitnik nagrade Moj ZABA Start natječaja

Projekt “Razvoj mehatroničkog uređaja za rehabilitaciju pacijenata sa smanjenom funkcionalnošću gornjih ekstremiteta” istraživačke skupine s Tehničkog fakulteta u Rijeci, u suradnji s KBC-om te Medicinskim fakultetom u Rijeci, prijavljen na natječaj Zagrebačke banke “Moj ZABA Start“, odabran je kao dobitnik treće nagrade i 80.000 kuna u kategoriji “Kultura i znanost“. U predmetnoj kategoriji prijavljeno je bilo ukupno 209 projektnih prijava, dok je u svim kategorijama ukupno bilo 680 projektnih prijava od kojih je samo njih 11 na kraju osvojilo donacije.

U nagrađenom projektu sudjeluju prof. dr. sc. Saša Zelenika, izv. prof. dr. sc. Kristijan Lenac, dr. sc. Ervin Kamenar, asistenti Petar Gljušćić i Tea Arrigoni s Tehničkog fakulteta u Rijeci i Centra za mikro- i nanoznanosti i tehnologije Sveučilišta, te prof. dr. sc. Tea Schnurrer Luke Vrbanić s Medicinskog fakulteta i KBC-a Rijeka.

 

http://www.mojzabastart.hr/home/tko-su-dobitnici

http://novilist.hr/Promo-sadrzaji/Zaba-proglasila-pobjednike-natjecaja-Moj-Zaba-Start

https://www.vecernji.hr/biznis/za-inovativne-projekte-milijun-kn-1203699

http://www.jutarnji.hr/Promo/zaba-proglasila-pobjednike-natjecaja-moj-zaba-start/6690393/

http://www.uniri.hr/index.php?option=com_content&view=article&id=6604%3Atrea-nagrada-projektu-riteh-a&catid=1%3Avijesti&lang=hr

http://www.riteh.uniri.hr/novosti/projekt-tehnickog-fakulteta-dobitnik-nagrade-moj-zaba-start/

https://www.tkokaze.hr/novosti/proglaseni-pobjednici-natjecaja-moj-zaba-start/

https://cropix.hr/index.php?menuid=gallery_cropix&gid=111811

http://www.bug.hr/vijesti/zaba-proglasila-pobjednike-natjecaja-moj-zaba-star/162839.aspx

https://lider.media/ukratko/foto-proglaseni-pobjednici-natjecaja-moj-zaba-start/

https://www.vecernji.hr/kultura/deset-kulturnih-i-znanstvenih-projekata-u-finalu-nagrade-moj-zaba-start-1199234

PrecEng team members presented their work at the My First Conference held on RiTeh

Our team members M. Sc. Tea Arrigoni, M. Sc. Petar Gljuščić and M. Sc. Marko Perčić presented the results of their recent work at the “My first Conference” event organized by the Faculty of Engineering, the Faculty of Civil Engineering and the Faculty of Maritime Studies of the University of Rijeka. The conference was held at the Faculty of Engineering itself and organized exclusively for the doctoral students whose research is undergoing.

The presented papers, in the form of extended abstracts, are:

Arrigoni, S. Zelenika, E. Kamenar, T. Schnurrer Luke Vrbanić, K. Lenac “Issues in the mechatronics design of a full arm rehabilitation device” – Paper

P. Gljušćić & S. Zelenika: “Modelling, optimization and application of piezoelectric vibration energy harvesting devices” – Paper

M. Perčić & S. Zelenika: “Issues in characterizing parameters influencing nanometric friction” – Paper

PrecEng istraživačka skupina s Tehničkog fakulteta u Rijeci u finalu natječaja Moj ZABA start

Projekt “Razvoj mehatroničkog uređaja za rehabilitaciju pacijenata sa smanjenom funkcionalnošću gornjih ekstremiteta” istraživačke skupine s Tehničkog fakulteta u Rijeci, u suradnji s Kliničkim bolničkim centrom te Medicinskim fakultetom u Rijeci, prijavljen na natječaj Zagrebačke bankeMoj ZABA Start“, odabran je od strane stručnog povjerenstva kao jedan od 10 finalista u kategoriji “Kultura i znanost“. U predmetnoj kategoriji prijavljeno je ukupno 209 projektnih prijava, dok je u svim kategorijama ukupno bilo 680 projektnih prijava od kojih je 30 ušlo u finale.

U projektnoj prijavi sudjeluju prof. dr. sc. Saša Zelenika, izv. prof. dr. sc. Kristijan Lenac, dr. sc. Ervin Kamenar, asistent Petar Gljušćić, i Tea Arrigoni s Tehničkog fakulteta u Rijeci te prof. dr. sc. Tea Schnurrer Luke Vrbanić sa Zavoda za fizikalnu i rehabilitacijsku medicinu KBC-a Rijeka i Medicinskog fakulteta u Rijeci.

Ukupni fond potpora za kategoriju Kultura i znanost iznosi ukupno 330.000 kn odnosno 120.000 kn za prvu, 100.000 kn za drugu i 80.000 kn za treću nagradu prema odluci Komisije. Četvrta nagrada od 30.000 kn bit će dodijeljena prema odabiru javnosti putem javnog glasovanja na www.mojzabastart.hr.

“Moj Zaba Start kroz različite natječaje podupire najinovativnije i tržišno utemeljene ideje s pozitivnim utjecajem na gospodarstvo i društvo. Pokrenut je 2013. godine te je do sada podržao ukupno 29 najboljih održivih projekata iz različitih područja po ocjeni stručne komisije i prema odabiru javnosti. Dobitnici su inovativni start up-ovi, društveno odgovorne inicijative, projekti iz područja zelenog poduzetništva i kreativne industrije te izrade aplikacija i informatičkih rješenja.”

http://www.mojzabastart.hr/home/

http://www.mojzabastart.hr/home/moj-zaba-start/o-projektu

http://www.mojzabastart.hr/home/tko-su-finalisti-ovogodisnjeg-natjecaja-moj-zaba-start4

Calibration of CNC milling machine tools by laser interferometer

In a collaboration with prof. Zoran Jurković and asist. Graciela Šterpin Valić from the Department of industrial engineering and managment positioning accuracy and repeatability of the X,Y and Z axes of the CNC milling machine were experimentally assessed.

All measurements were made using linear positioning metods. For more accurate repeatability of taking the same position, measurements of axes were performed in 3 cycles. X-axis experimental positioning were performed with 20 mm step for the 500 mm measuring range of the X-axis. Y-axis experimental positioning were performed with 20 mm step for the 320 mm measuring range of the Y-axis. Z-axis experimental positioning were performed with 5 mm step for the 95 mm measuring range of the Z-axis.

The team is currently working on the analysis of the obtained results.

 

Prof. Saša Zelenika become an expert evaluator of the European Commission!

Our member prof. Saša Zelenika was selected as an Expert evaluator of the European Commission (EC) of research infrastructure proposals submitted to the Horizon 2020 EU framework programme calls! Evaluation was held in Bruxelles, Belgimum from June 12th to June 16th 2017.

 

17th International EUSPEN Conference 2017, Hannover, Germany

Employees of the Precision Engineering Laboratory visited the 17th International conference EUSPEN 2017, held from 29.05. to 02.06.2017. in Hannover, Germany.

In the session Applications of Precision Engineering in Biomedical Sciences, our team presented a poster:

In the session Advances in Precision Engineering and Nanotechnologies, our team presented a poster:

 

Our member prof. Saša Zelenika was a member of the International Scientific Committee as well as the Chair of the session “Advances in Precision Engineering and Nanotechnology”.

Science Festival in Rijeka 2017

This year’s Science festival in Rijeka was held from April 24th to April 29th, 2017. The 15th festival was held in 22 Croatian cities at the same time. The theme of this year’s festival was weather/time.

Opening ceremony of this event was held at City Hall Korzo on Monday, April 24th, 2017 at 11:00.

As a part of the Science festival Precision engineering laboratory team members Prof. D. Sc. Saša Zelenika, D. Sc. Ervin Kamenar and M. Sc. Petar Gljušćić organized an open laboratory day for broader public on April 27th, 2017.

   

16th International EUSPEN Conference 2016, Nottingham, UK

Employees of the Precision Engineering Laboratory visited the 17th International conference EUSPEN 2016, held from 30.05. to 00.06.2017. in Nottingham, UK.

In the session Mechatronics and Control, our team presented three papers:

In the session Precision Engineering in Biomedical Sciences, our team presented a paper written together with the coleagues from School of medicine in Rijeka:

     

Doctoral thesis defence – E. Kamenar

Our member D. Sc. Ervin Kamenar defended his doctoral thesis entitled “Ultra-high precision positioning via a mechatronics approach” on May 19th, 2016.

Doctoral thesis supervisor vas Prof. D. Sc. Saša Zelenika.

Committee for the defense of the doctoral thesis:
  1. Prof. D. Sc. Nenad D. Pavlović, University of Niš, Serbia, Faculty of Mechanical Engineering (Mašinski fakultet Univerziteta u Nišu) – Committee Chair
  2. Prof. D. Sc. Saša Zelenika, University of Rijeka, Croatia, Faculty of Engineering (Sveučilište u Rijeci, Tehnički fakultet)
  3. Prof. D. Sc. Francesco De Bona, University of Udine, Italy, Department of Electrical, Management and Mechanical Engineering (Università di Udine, Dipartimento di Ingegneria Elettrica, Gestionale e Meccanica)

Thesis abstract:

Ultra-high precision mechatronics positioning systems are critical devices in current precision engineering and micro- and nano-systems’ technologies, as they allow repeatability and accuracy in the nanometric domain to be achieved. The doctoral thesis deals thoroughly with nonlinear stochastic frictional effects that limit the performances of ultra-high precision devices based on sliding and rolling elements. The state-of-the-art related to the frictional behavior in the pre-sliding and sliding motion regimes is considered and different friction models are validated. Due to its comprehensiveness and simplicity, the generalized Maxwell-slip (GMS) friction model is adopted to characterize frictional disturbances of a translational axis of an actual multi-degrees-of-freedom point-to-point mechatronics positioning system aimed at handling and positioning of microparts. The parameters of the GMS model are identified via innovative experimental set-ups, separately for the actuator-gearhead assembly and for the linear guideways, and included in the overall MATLAB/SIMULINK model of the used device. With the aim of compensating frictional effects, the modeled responses of the system are compared to experimental results when the system is controlled by means of a conventional proportional-integral-derivative (PID) controller, when the PID controller is complemented with an additional feed-forward model-based friction compensator and, finally, when the system is controlled via a self-tuning adaptive regulator. The adaptive regulator, implemented within the real-time field programmable gate array based control system, is proven to be the most efficient and is hence used in the final repetitive point-to-point positioning tests. Nanometric-range precision and accuracy (better than 250 nm), both in the case of short-range (micrometric) and long-range (millimeter) travels, are achieved. Different sensors, actuators and other design components, along with other control typologies, are experimentally validated in ultra-high precision positioning applications as well.