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Number of results: 4
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Abstract

Optimization of industrial processes such as manufacturing or processing of specific materials constitutes a point of interest for many researchers, and its application can lead not only to speeding up the processes in question, but also to reducing the energy cost incurred during them. This article presents a novel approach to optimizing the spindle motion of a computer numeric control (CNC) machine. The proposed solution is to use deep learning with reinforcement to map the performance of the reference points realization optimization (RPRO) algorithm used in the industry. A detailed study was conducted to see how well the proposed method performs the targeted task. In addition, the influence of a number of different factors and hyperparameters of the learning process on the performance of the trained agent was investigated. The proposed solution achieved very good results, not only satisfactorily replicating the performance of the benchmark algorithm, but also speeding up the machining process and providing significantly higher accuracy.
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Authors and Affiliations

Dawid Kalandyk
1
ORCID: ORCID
Bogdan Kwiatkowski
2
ORCID: ORCID
Damian Mazur
2
ORCID: ORCID

  1. Doctoral School of the Rzeszów University of Technology, Powstanców Warszawy Ave. 12, 35-959 Rzeszów, Poland
  2. Department of Electrical and Computer Engineering Fundamentals, Rzeszow University of Technology, W. Pola str. 2, 35-959 Rzeszów, Poland
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Abstract

The article proposes an adaptive algorithm that generates all object signals, including those for which measurements are not performed due to the difficulties associated with on-line measurements. The algorithm is modeled on the idea of the Kalman filter using its equation, however, the selection of gains is optimized in a different way, i.e. the constant values depend on the adopted ranges of adaptation errors. Moreover, the knowledge of the statistics of all noise signals is not imposed and there is no linearity constraint. This approach allowed to reduce the complexity of calculations. This algorithm can be used in real-time systems to generate signals of objects described by non-linear differential equations and it is universal, which allows it to be used for various objects. In the conducted research, on the example of a biochemically contaminated river, only easily measurable signals were used to generated the object signals, and in addition, in the case of absence some measurements, the functioning of the algorithm did not destabilize.
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Authors and Affiliations

Przemysław Hawro
ORCID: ORCID
Tadeusz Kwater
ORCID: ORCID
Jacek Bartman
ORCID: ORCID
Bogdan Kwiatkowski
ORCID: ORCID

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Abstract

The paper presents an off-line application that determines the maximum accuracy of the reference points for the given dynamics parameters of a CNC machine. These parameters are maximum speed, acceleration, and JERK. The JERK parameter determines the rate of change of acceleration. These parameters are defined for each working axis of the machine. The main achievement of the algorithm proposed in the article is the determination of the smallest error specified for each reference point resulting from the implemented G-code for the considered dynamic parameters of the CNC machine. The solutions to this problem in industry consider the improvement in the accuracy of hitting the reference points, but they do not provide information on whether the obtained solution is optimal for such parameters of the machine dynamics. The algorithm makes the accuracy dependent on the adopted dynamic parameters of the machine and the parameters of the PLC controller used in the CNC machine.
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Authors and Affiliations

Bogdan Kwiatkowski
1
ORCID: ORCID
Tadeusz Kwater
2
ORCID: ORCID
Damian Mazur
1
ORCID: ORCID
Jacek Bartman
3
ORCID: ORCID

  1. Department of Electrical and Computer Engineering Fundamentals, Rzeszow University of Technology, ul. W. Pola 2, 35-959 Rzeszow, Poland
  2. Institute of Technical Engineering, State University of Technology and Economics in Jaroslaw, ul. Czarnieckiego 16, 37-500 Jaroslaw, Poland
  3. University of Rzeszow, ul. Rejtana 16C, Rzeszow, Poland
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Abstract

The development of electric vehicles (EV) necessitates the search for new solutions for configuring powertrain systems to increase reliability and efficiency. The modularity of power supplies, converters, and electrical machines is one such solution. Among modular electric machines, dual three-phase (DTP) motors are the most common in high-power drives. To simplify low and medium power drives for EVs based on DTP PM motor, it is proposed to use a BLDC drive and machine of the simplest design – with concentrated windings and surface mounted PMs on the rotor. To study and create such drives, an improved mathematical model of DTP PM machine was developed in this work. It is based on the results of 2D FEM modeling of the magnetic field. According to the developed method, the dependences of the self and mutual inductances between all phase windings from the angle of rotor position and loads of different motor modulus were determined. Based on these inductances, the circuit computer model of DTP PM machine was created in the Matlab/Simulink. It has a high simulation speed and a high level of adequacy, which is confirmed by experimental studies with a mock-up sample of the electric drive system.
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Authors and Affiliations

Ihor Shchur
1
Damian Mazur
2
ORCID: ORCID
Olekcandr Makarchuk
1 3
Ihor Bilyakovskyy
1
Valentyn Turkovskyi
1
Bogdan Kwiatkowski
4
ORCID: ORCID
Dawid Kalandyk
5
ORCID: ORCID

  1. Department of Electric Mechatronics and Computer-Controlled Electromechanical Systems, Lviv Polytechnic National University, Lviv 79013, Ukraine
  2. Department of Electrical Engineering and Fundamentals of Computer Science, Rzeszow University of Technology, Rzeszow 35-959, Poland
  3. Faculty of Electrical Engineering, Czestochowa University of Technology, Czestochowa 42-200, Poland
  4. Department of Electrical Engineering and Fundamentals of ComputerScience, Rzeszow University of Technology, Rzeszow 35-959, Poland
  5. Doctoral School of Engineering and Technical Sciences at the Rzeszow University of Technology, Rzeszów 35-959, Poland

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