VILNIUS TECH PhD research could change the future of robots

December 12, 2024
Automation is an inseparable part of the modern world, which is why the accuracy of robots is becoming an increasingly important factor in the practice in various fields, anything from industrial production to medicine. This fall, VILNIUS TECH alumnus Marius Sumanas, who earned his PhD, focused his doctoral research on reducing robot positioning errors using innovative machine learning methods.

This work not only reveals the solutions proposed by science but also opens up opportunities to improve older systems.

Accuracy – the foundation of modern automation

Dr. Sumanas chose the topic "Compensating robot positioning errors using deep Q-learning algorithm" due to its novelty and practical relevance. Moreover, the researcher believes his studies will contribute to significant changes in the field of automation.

In his dissertation, Dr. Sumanas examined the problem of robot accuracy. Mechanical wear, external forces, and environmental factors often lead to positioning errors, reducing the reliability of robot movements. Such inaccuracies can cause problems in manufacturing or medicine, where micron-level precision is a critical criterion.

"We, along with my team, developed a method that uses a combination of machine learning algorithms to help correct robot movements so that they are as precise and reliable as possible," says the young scientist.

The results of the dissertation promise not only practical benefits but also a significant contribution to scientific progress. The developed method is universal and can be applied in various fields that require extremely high precision.

"This research is a great example of how innovative technologies and artificial intelligence can solve real problems, improve processes, and contribute to building a sustainable future."

Errors are as unique as the robots themselves

Each robot and its operating conditions are unique, so it is essential to accurately identify and compensate for kinematic errors. As explained by the VILNIUS TECH alumnus, the dissertation aimed to create a system that would not only identify errors but also correct them effectively.

"During the experiments, we used a robot with special experimental equipment and inertial sensors to collect data on the robot's movements and their accuracy. The data collected was then processed using the deep Q-learning algorithm, which provided corrective coordinates enabling a significant improvement of the robot's accuracy," explains Dr. Sumanas.

The results confirmed that the deep Q-learning algorithm is effective in solving positioning issues. During the study, the error rate was significantly reduced, which opens up the possibility for broader application of this method in the future.

The researcher states that the application of such a method could not only improve the accuracy of new robots but also extend the lifespan of older systems. This would undoubtedly contribute to the development of automation and the more efficient use of older equipment.

Galerija

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Student Memo: Where to park your car or bicycle, eat, and find your classrooms
Student Memo: Where to park your car or bicycle, eat, and find your classrooms
When starting your studies, it is not always clear during the first week where you can park your car or bicycle, which building your seminar will be in, or where you can eat or heat up your own food during breaks. To make settling into the academic year easier, we have prepared this memo. Student Car Parking: Students attending lectures at Saulėtekio al. 11 can park their cars in the lot located on Šatrijos Raganos Street. There is no barrier in this lot. How to find the lot: Driving from Saulėtekio al. – going up the hill past the roundabout and the university buildings. Or entering from Pragiedrulių, Mileišiškių sodų, or other streets onto Šatrijos Raganos Street – going down the hill before the roundabout and the university buildings. Students attending lectures on Plytinės Street can park in the lots located there. Students can enter the gated lot by tapping their activated student ID card at the terminal. Entrance to the lots is from Plytinės Street. Antanas Gustaitis Aviation Institute (AGAI) students, lecturers, and students or staff arriving at "Linkmenų fabrikas" can park in all lots. The barrier opens by tapping an activated student or staff ID card at the terminal. There are no dedicated parking lots for students attending lectures at the Old Town Campus (Trakų rūmai). Canteens and Cafes: Saulėtekis Campus: "Maisto imperija" (Building S2, 1st floor) – weighed food (you can build your own plate) – 1.70 € per 100 g, lunch of the day – 7.50 €, snacks, coffee, and other drinks. You can also heat up your own food here. Working hours: Monday–Thursday: 08:00–16:00; Friday: 08:00–15:00. "ARC BISTRO" (Building S3, 1st floor) – a menu consisting of a multi-course selection and daily lunch at a fixed price (up to 10 €), as well as snacks, coffee, and other drinks. Working hours: Monday–Friday: 11:00–15:00. Plytinė Campus (P2, 1st floor): "Confetti" – a menu consisting of a multi-course selection and daily lunch at a fixed price (up to 10 €), as well as snacks, coffee, and other drinks. You can also heat up your own food here. Working hours: Monday–Thursday: 09:00–16:00; Friday: 09:00–15:00. Old Town Campus (Senamiesčio rūmai): "Confetti" (Islandijos str. 3) – a menu consisting of a multi-course selection and daily lunch at a fixed price (up to 10 €), as well as snacks, coffee, and other drinks. Working hours: Monday–Friday: 07:45–15:00. Places where you can heat your own food in microwaves: When using microwaves, please maintain cleanliness, follow safety rules, and respect others: do not put in or heat items with shiny surfaces (e.g., cutlery, aluminum foil, etc.), do not slam the doors or other surfaces, wipe or clean the inside of the microwave or other surfaces (including the kitchenette) if needed, do not cut in line, and do not stop someone else's food from heating without permission, etc. Saulėtekis Campus: In the "Maisto imperija" canteen (Building S2, 1st floor), as well as in the Sustainability Centre (Building S5), and the 5th and 6th-floor kitchenettes in Building S6. Plytinė Campus: In the "Confetti" cafe (Building P2, 1st floor). Old Town Campus: In the Faculty of Architecture's 2nd and 3rd-floor kitchenettes (at the end of the corridor). AGAI: In the 2nd-floor kitchenette of the old building (near the Dean's office). It is planned that microwaves will also be available in the new building in the future. Linkmenų Campus: In the 2nd-floor kitchenette at "Linkmenų fabrikas". Library: Room 119, 1st floor. You can also make tea/coffee here. Places to leave your bicycle: Saulėtekis Campus: At special bike racks near the entrance to Building S2, and in the Central Building parking lot. Plytinė Campus: In the two designated bicycle shelters in the courtyard between buildings P1 and P2. Old Town Campus: At special bike racks near the entrances to each building. AGAI and Linkmenų Campus: At special bike racks near both departments. Library: At special bike racks near the entrance. Department/Building Abbreviations: Saulėtekis Campus (Saulėtekio al. 11, Vilnius): S1 Central Building (Administration, International Studies Centre, International Relations Office, etc.) S2 Classroom Building S3 Educational Building (Faculty of Civil Engineering, Faculty of Business Management) S4 Classroom Building (Faculty of Environmental Engineering, Sustainability Centre, Food Laboratory) S5 Educational Building (Faculty of Environmental Engineering, Sustainability Centre, Food Laboratory) S6 Laboratory Building (Faculty of Fundamental Sciences, Information Technology and Systems Centre, Academic Support Centre, etc.) S7 Laboratory Building Plytinė Campus (Plytinės str. 25, Vilnius): P1 or P Laboratory Building P2 Educational Building (Faculty of Electronics, Faculty of Mechanics, Faculty of Transport Engineering) P3 Educational Building Linkmenų Campus (Linkmenų str. 28, Vilnius): L1 Building (Institute of Building Materials) L2 Building (Road Research Institute) L3 Building L4 Building L5 Educational Building (Linkmenų fabrikas) L6 Educational Building (Antanas Gustaitis Aviation Institute) Old Town Campus (Trakų str. 1, Vilnius): T1 or T Educational Building (Faculty of Architecture) T2 Educational Building (Faculty of Creative Industries) T3 Educational Building T4 Educational Building T5 Educational Building Old abbreviations that might still appear in some contacts: SNR – Senamiesčio rūmai (Old Town Campus) SRK-I – Saulėtekio rūmų pirmas korpusas (Saulėtekis Campus First Building) SRK-II – Saulėtekio rūmų antras korpusas (Saulėtekis Campus Second Building) SRL – Saulėtekio rūmų laboratorinis korpusas (Saulėtekis Campus Laboratory Building) SRL-II – Saulėtekio rūmų antras laboratorinis korpusas (Saulėtekis Campus Second Laboratory Building) MAC – Saulėtekio centriniai rūmai (Saulėtekis Central Building) AGAI TLK – Antano Gustaičio Aviacijos instituto Treniruoklių ir laboratorijų korpusas (Antanas Gustaitis Aviation Institute Simulator and Laboratory Building). Other Addresses: Kyviškės Airfield: Lakūnų str. 7D, Kyviškės Sports and Art Centre: Saulėtekio al. 28, Vilnius Library: Saulėtekio al. 14, Vilnius Lithuanian Maritime Academy: I. Kanto str. 7, Klaipėda. Thematic Reading Rooms in Faculties: Architecture and Creative Sciences Reading Room (Trakų str. 1, T1, 1.15, Vilnius) Technology and Management Sciences Reading Room (Saulėtekio al. 11, S1, C03, Vilnius) Mechanics, Electronics, and Transport Sciences Reading Room (Plytinės str. 25, P2, 179, Vilnius) Maritime Sciences Reading Room (I. Kanto str. 7, Klaipėda)
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