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A Surveillance of Dynamic Processes on Selected Mechatronic Systems

Kaliński K., Galewski M., Mazur M.

Archive of Mechanical Engineering

2013

Vol. LX, nr 3

347--367

The paper concerns development of original method of optimal control at energy performance index and its application to dynamic processes surveillance of some mechatronic systems. The latter concerns chatter vibration surveillance during highspeed slender milling of rigid details, as well as motion control of two-wheeled mobile platform. Results of on-line computer simulations and real performance on the target objects reflect a great efficiency of the processes surveillance.

Artykuł poświęcony jest przedstawieniu oryginalnej metody sterowania optymalnego z wykorzystaniem energetycznego wskaźnika jakości i jej zastosowaniu do nadzorowania procesów dynamicznych w wybranych systemach mechatronicznych. W szczególności dotyczy to nadzorowania drgań chatter podczas obróbki szybkościowej przedmiotów sztywnych z wykorzystaniem narzędzi smukłych oraz sterowania ruchem dwukołowej platformy mobilnej. Rezultaty symulacji komputerowych oraz przeprowadzone badania eksperymentalne na rzeczywistych obiektach pokazują dużą efektywność proponowanej metody.

High-speed milling of light metals

Cus F., Zuperl U., Gecevska V.

Journal of Achievements in Materials and Manufacturing Engineering

2007

Vol. 24, nr 1

357-364

Purpose: of this paper: Introduction applicability of high-speed cutting of light metals is presented in this paper. Design/methodology/approach: HSC is the result of numerous technical advances ensuring that milling has become faster than conventional milling and has gained importance as a cutting process. The advantages of the HSC milling are higher productivity owing to the reduction of machining times increase of the flow time of production, reduction of the number of technological operations, increase of the surface quality and longer service life of tools. The machining conditions for execution of the HSC (36000 min to the -1 and feeding 20 m/min) require modernly built machine tools to meet those machining conditions. Findings: Continuous development of new materials is more and more dynamical, particularly, in the automobile, aircraft and electronic industry and in the manufacture of various mechanical parts. Also the achievements in the area of building of machines and tools, ensuring high cutting speeds (highly efficient machining) have contributed to development of the process. Research limitations/implications: High quality of the surfaces, the quality of this so-called HSC milling can be compared to grinding. Practical implications: High-speed milling of light metals from aluminium and magnesium is more and more frequently used in practice. This result is high quality of the surface and shorter machining times. In some cases when machining by grinding is specified, the latter is omitted. Originality/value: The applicability of high-speed milling has proved to be successful, when aluminum and magnesium alloying materials are machined.