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Gradetsky V.G.,Russian Academy of Sciences | Ermolov I.L.,MSTU Stankin | Knyazkov M.M.,Russian Academy of Sciences | Semyonov E.A.,Russian Academy of Sciences | Sukhanov A.N.,Russian Academy of Sciences
Mechanisms and Machine Science | Year: 2014

This paper describes a kinematic model of a human arm exoskeleton for which direct and inverse kinematics are solved. The results of experimental research are also delivered. © Springer International Publishing Switzerland 2014.

Shvartsburg L.E.,MSTU Stankin | Ivanova N.A.,MSTU Stankin | Ryabov S.A.,MSTU Stankin | Zaborowski T.,Poznan University of Technology
Life Science Journal | Year: 2014

Technological processes of polishing are characterized by a heat discharge in a processing area, resulting in a deformation of metal and an external friction of abrasive grains on a surface. In a case of using liquid lubricantcooling technological substances (LCTS), heat discharge results in a destruction of components. This leads to a formation of chemical contaminants in a processing area. Qualitative and quantitative composition of contaminations depends on processing parameters: a rotation speed of a wheel, a speed of a longitudinal feed and a depth polishing.

Sova A.,Jean Monnet University | Okunkova A.,MSTU Stankin | Grigoriev S.,MSTU Stankin | Smurov I.,Jean Monnet University
Journal of Thermal Spray Technology | Year: 2013

In the current study, velocities of aluminum, zinc, and copper particles accelerated in an axisymmetric cold spray micronozzle are numerically simulated and experimentally measured. It is found that aluminum and zinc particles can be accelerated to velocities close to the critical values in a supersonic nozzle with 1-mm exit diameter, 0.5-mm throat diameter, and 20-mm length when helium is used as the process gas. The diameter of the particle jet delivered by the micronozzle does not exceed 1.3 mm for any of the types of the tested powders. © 2012 ASM International.

Andreev V.P.,International Institute of New Educational Technologies | Kirsanov K.B.,International Institute of New Educational Technologies | Pletenev P.F.,MSTU Stankin | Poduraev Yu.V.,MSTU Stankin | And 2 more authors.
Energy Procedia | Year: 2015

This paper presents the results of research on the development of technology for supervisory control of mechatronic devices through the Internet. We propose a hierarchical structure for the management of a group of mobile robots (a group of mechatronic devices) by combining their information-measuring and control systems into a local area network. The main requirements to the functional structure of these systems are formulated. The development of a spatially distributed control system involves a number of problems associated with peculiarities of the use of digital radio and Internet channels. These problems can be treated by creating specialized software and hardware tools, such as the spatially distributed scientific and educational Internet-laboratory proposed in this paper. The laboratory can be used to organize full-fledged access to specific mechatronic systems of different models and different producers through the Internet. The main requirements for the implementation of this laboratory are formulated through the use of the "concept of drivers". The architecture and technical implementation of the pilot project of this laboratory are described. The driver concept designed for incorporating the mechatronic devices into the structure of the laboratory is demonstrated by the example of the AMUR and Festo Robotino robots.The work was supported by the Russian Academy of Engineering, project "Intelligent Robotronics" and partially by the Russian Foundation for Basic Research, project nos. 13-07-01032 and 13-07-00988. © 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

Sova A.,National School of Engineering, Saint-Etienne | Grigoriev S.,MSTU Stankin | Kochetkova A.,MSTU Stankin | Smurov I.,National School of Engineering, Saint-Etienne
Surface and Coatings Technology | Year: 2014

Cold spray is a material deposition technique based on the high velocity particle-substrate impact. The last researches in this field show that efficiency of deposition depends not only on the particle impact velocity but also on the impact temperature. In order to control the particle impact temperature, a special powder preheater installed between the powder feeder and the nozzle could be applied. In the current paper, an influence of powder preheating on the particle impact parameters is numerically studied. Two cases with powder injection to subsonic and supersonic regions of the nozzle are considered. It is shown that artificially preheated 10-50. μm copper particles axially injected to the supersonic region of the nozzle have higher impact temperature than the particles injected to the nozzle prechamber. This effect could be explained by the dependence of duration and intensity of gas-particle heat exchange on the location of powder injection point. It was also shown that in the case of powder injection to supersonic zone, the application of powder preheating could shift the particle impact parameters towards the deposition window without increasing the working gas stagnation temperature. © 2013 Elsevier B.V.

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