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Article
Feasibility of Controlling the Motion of Industrial Robots, CNC Machine Tools, and Mechatronic Systems. Part 2
Real-time implementation of control systems is considered. The relationship between the complexity of the object being controlled and the duration of the control cycle is established: with increase in complexi...
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Article
Feasibility of Controlling the Motion of Industrial Robots, CNC Machine Tools, and Mechatronic Systems. Part 1
The feasibility of real-time control of complex motion is considered, with variation in the length of the control cycle, the velocity of the object, and the response time of the system. The condition governing...
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Article
Precision Measurements of X-Ray Spectra for the Diagnosis of Laboratory Astrophysical Plasma
A technique is described for achieving high accuracy (relative error up to ≈0.001%) for measuring the absolute wavelengths of the spectral lines of multiply charged ions with an average (Z = 17–25) by the nuclear...
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Article
Stop** Power Measurement for 100 keV/u Fe Ions in Hydrogen Plasma
The interaction of a heavy-ion beam with matter is a fundamental problem of plasma physics and high-energy density in matter physics. The paper presents the results of experimental studies of energy losses of Fe+...
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Article
Analysis of Heat Transfer by the Response Function Method
On the basis of recent information regarding conduction, analysis of heat transfer by the response function method is proposed. Comparison with the finite-element method confirms the high accuracy of the propo...
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Article
Broadband Chaotic Oscillations in a Weakly Coupled Ensemble of Self-Sustained Oscillators
An ensemble of van der Pol oscillators coupled in a ring has been numerically simulated. Peculiarities of chaotic dynamics have been studied by analysis of Fourier spectra and Lyapunov exponents. It is establi...
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Article
Use of Direct Optical Heterodyning for Measuring Hardness by the Leeb Method
In this paper, we describe a portable system for measuring the indenter velocity in hardness meters implemented according to the Leeb method. The developed system is a fiber interferometer, in which a radiatio...
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Article
Cycloidal Sha** of Polyhedra in Two-Rotor Systems
A method of solution is proposed for the model of the cycloid sha** of polyhedra. The method is based on reducing the equations to algebraic form by polynomial approximation of transcendental functions.
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Article
Exciting Chaotic and Quasi-Periodic Oscillations in a Multicircuit Oscillator with a Common Control Scheme
We propose a multicircuit oscillator with a common control scheme driving self-sustained oscillations in each circuit, which can exhibit quasi-periodic and chaotic oscillations. The proposed oscillator was inv...
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Article
Evolution of methods of assessing the accuracy of metal-cutting machines. 2. Evolution of concepts and models used in assessing the accuracy of metal-cutting machines
The evolution of methods used in assessing and monitoring the accuracy of metal-cutting machines is considered. Changes in terminology and in the concept of accuracy are discussed. Relations between the evolut...
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Article
Decision making in production on the basis of structure–strategy theory
The formulation of adequate requirements in manufacturing is outlined on the basis of structure–strategy theory.
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Article
Automated chronometric system
An automated chronometric system is developed for assessing the difficulty of machining operations in manufacturing. The system facilitates and improves labor organization and standardization in the machine-to...
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Article
Quasi-periodic bifurcations of four-frequency tori in the ring of five coupled van der Pol oscillators with different types of dissipative coupling
Five van der Pol oscillators connected into a ring have been investigated numerically. We have considered different types of coupling: dissipative and active, as well as dissipative and active with a single co...
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Article
Transient chaos in multidimensional Hamiltonian system with weak dissipation
The dynamics of two coupled twist maps with weak dissipation is studied. The calculation of Lyapunov exponents is used to analyze the structure of the action plane of the system. The chaotic transient dynamic...
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Article
Evolution of methods of assessing the accuracy of metal-cutting machines
The evolution of concepts of accuracy and attainable machining accuracy are considered. The physical aspects of accuracy are discussed. The changes in the level of precision since 1800 are outlined, with predi...
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Article
Determination of the shape of indenters for nanohardness testers via interferometry
A method for determination of the contact-area functions for diamond indenters of nanohardness testers using a metrological atomic-force microscope with three-coordinate laser interferometer is proposed. Face ...
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Article
Precision and efficiency of metal-cutting machines
Approaches to improving the design of metal-cutting machines are discussed. The most important problems relating to the precision, thermal processes, dynamic modeling, and diagnostics of metal-cutting machines...
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Article
Trends in research on metal-cutting machines
This review covers the current state and prospects for the design of metal-cutting machines, including numerically controlled machines. The characteristics of common mechatronic modules are considered. The str...
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Article
Contemporary equipment design
Trends in the development of industrial machines and corresponding design methods are considered. The problems to be solved in the design of traditional and innovative machine tools are discussed. Approaches t...
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Article
Development of a laser cleaning method for the first mirror surface of the charge exchange recombination spectroscopy diagnostics on ITER
A set of optical diagnostics is expected for measuring the plasma characteristics in ITER. Optical elements located inside discharge chambers are exposed to an intense radiation load, sputtering due to collisi...
