Martin Goubej | University of West Bohemia (original) (raw)

Papers by Martin Goubej

2023 IEEE 28th International Conference on Emerging Technologies and Factory Automation (ETFA)

Drones

The popularity of using vertical take-off and landing unmanned aerial systems continues to rise. ... more The popularity of using vertical take-off and landing unmanned aerial systems continues to rise. Although the use of these devices seems to be almost limitless, the main drawback is still the battery capacity and the need to replace or recharge it several times per hour. This article provides a technical overview of the development of an experimental mechatronic system for automatic drone battery management called Droneport. It was developed as a system with a landing platform, automatic battery exchange and recharging outside the drone, allowing a quick return to the mission. The first part presents its mechanical design, installed instrumentation and software environment. The next part is devoted to the description of the individual hardware components, highlighting the specific problems that had to be solved to optimize size, weight and robustness requirements. The final section summarizes our observations regarding the contribution of this tool to the autonomy of drones or UAVs ...

IFAC-PapersOnLine, 2022

The paper deals with the development of an experimental benchmark mechatronic system that was emp... more The paper deals with the development of an experimental benchmark mechatronic system that was employed in control courses taught at our university. The first part introduces its mechanical design, installed instrumentation and software environment. Methodology of its use in terms of our control courses curriculum follows, highlighting particular problems that students can solve during their classes. The last section summarises our observations regarding the contribution of this tool to the effectiveness of the education process.

Disertační práce se zabývá problematikou řízení pohybu elektromechanických systémů s kmitavou dyn... more Disertační práce se zabývá problematikou řízení pohybu elektromechanických systémů s kmitavou dynamikou způsobenou poddajností poháněné soustavy. Cílem je vyvinout efektivní a spolehlivé algoritmy pro automatickou identifikaci systému a návrh robustního regulátoru použitelné pro široké spektrum průmyslových aplikací sysémů řízení pohybu. Dosažené teoretické výsledky jsou popsány ve třech sekcích věnovaných automatické identifikaci, pasivnímu tlumení vibrací s použitím metody tvarování vstupní veličiny a aktivního zpětnovazebního tlumení. Použití navržených metod je demonstrováno řadou numerických simulací a experimentálních výsledků.ObhájenoThe main topic of the thesis is a problem of motion control of electromechanical systems with oscillatory dynamics caused by a mechanical compliance of the driven load. The goal is to develop effective and reliable algorithms for automatic system identification and robust controller synthesis applicable to a wide range of industrial motion contro...

Článek se zabývá řízením pohybu mechanických systémů s pružnou strukturou. Cílem je navrhnout tva... more Článek se zabývá řízením pohybu mechanických systémů s pružnou strukturou. Cílem je navrhnout tvarovací filtr vstupního signálu, který zajistí minimalizaci úrovně reziduálních vybrací, vybuzených pohybem pružných částí. Filtr je navržen v časové oblasti analýzou impulsní funkce. Aplikace navrženého filtru jsou demonstrovány na dvou příkladech systému s flexibilní konstrukcí - řízení visutého jeřábu se zavěšeným břemenem a elektrický pohon s připojenou pružnou hřídelí. Studován je efekt nelinearit v cestě signálu způsobený saturací smyčkových servo-regulátorů. Diskutovány jsou různé možnosti umístění filtru.This paper deals with control of flexible mechanical systems. The goal is to modify the input signal in order to minimize the residual vibrations excited during a motion of a system with flexible parts. The filter is designed in the time domain via impulse function analysis. Possible application of the proposed solution is demonstrated on two examples of flexible system - control ...

Sensors

The paper deals with a lead-through method of programming for industrial robots. The goal is to a... more The paper deals with a lead-through method of programming for industrial robots. The goal is to automatically reproduce 6DoF trajectories of a tool wielded by a human operator demonstrating a motion task. We present a novel motion-tracking system built around the HTC Vive pose estimation system. Our solution allows complete automation of the robot teaching process. Specific algorithmic issues of system calibration and motion data post-processing are also discussed, constituting the paper’s theoretical contribution. The motion tracking system is successfully deployed in a pilot application of robot-assisted spray painting.

2017 18th International Carpathian Control Conference (ICCC), 2017

The paper deals with the model-based compensation of friction in velocity and position controlled... more The paper deals with the model-based compensation of friction in velocity and position controlled servomechanisms. A class of single degree of freedom mechanical systems with friction nonlinearity acting at the plant input is considered. Two approaches to friction compensation using dynamic model-based feedforward control and disturbance observer based feedback control are studied and compared to each other. Experimental results with an industrial grade robotic manipulator demonstrate the performance of the proposed methods.

2019 22nd International Conference on Process Control (PC19), 2019

The paper deals with a class of plug-in type repetitive controllers intended for servo systems wh... more The paper deals with a class of plug-in type repetitive controllers intended for servo systems which follow periodic reference signals or compensate periodic exogenous disturbances. Proportional-integral (PI) feedback controller is complemented by an internal model of a generic periodic signal aiming at perfect asymptotic tracking or disturbance rejection. A novel design method is proposed allowing a simultaneous tuning of the PI controller and the repetitive control part. The design requirements can be formulated in the frequency domain as proper loop-shaping inequalities defining constraints on important closed-loop sensitivity functions. These constraints are translated directly into the parametric plane of the controller allowing to derive a complete set of admissible controllers. The proposed method is demonstrated in a case study of a flexible motion system.

2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2016

The paper deals with analysis of fundamental performance limitations of elastic servo drives with... more The paper deals with analysis of fundamental performance limitations of elastic servo drives with significant mechanical compliance in the driven load. Two-mass system is chosen as a general representation of a flexible mechanism with oscillatory dynamics. A problem of PID compensator tuning is considered since this control algorithm is still prevalent in industrial motion control systems. The provided analysis reveals an essential importance of the resonance ratio parameter and derives its range suitable for convenient controller design. The theoretical analysis is supported by experimental results.

Journal of Physics: Conference Series, 2015

The paper deals with development of a unified framework for generation of 3D visualizations of co... more The paper deals with development of a unified framework for generation of 3D visualizations of complex mechatronic systems. It provides a high-fidelity representation of executed motion by allowing direct employment of a machine geometry model acquired from a CAD system. Open-architecture multi-platform solution based on latest web standards is achieved by utilizing a web browser as a final 3D renderer. The results are applicable both for simulations and development of real-time human machine interfaces. Case study of autonomous underwater vehicle control is provided to demonstrate the applicability of the proposed approach.

2015 20th International Conference on Process Control (PC), 2015

The paper deals with a systematic observer design for a robust frequency identification of electr... more The paper deals with a systematic observer design for a robust frequency identification of electromechanical systems. The observer estimates the frequency response of the system which is excited by a swept harmonic signal with a variable frequency, amplitude and DC component. The paper presents a computationally efficient algorithm based on the recursive discretization of a Kalman filter. An application of the proposed method is demonstrated on a problem of motion control of a compliant mechanism.