Solar sails with controllable reflective properties may be used to maintain the required mutual position of the spacecraft within a grouping close to the collinear L2 libration point of the Sun–Earth System.
A method is proposed for the analytical calculation of the elastic displacement of a shaft relative to a bush in joints with interference under the action of radial force and a bending torque. Those displacements are associated with elastic deformation of the shaft, the bush, and the contact layer formed by their rough surfaces. On the basis of that approach, a method is proposed for estimating the lower eigenfrequency of the shaft–bush system. As an example, the thermal fitting of an axial tool in a mandrel is considered.
Neural networks are applied to the longterm prediction of parameter variation. Regulation of the heat treatment of ferroconcrete is considered as an example. Experimental results are presented. An algorithm is proposed for planning the operation of the executive mechanism.
Computer simulation of the stamping of thin-walled parts with engraving and reinforcing ribs is considered, on the basis of the behavior of sand.
The methods of obtaining of numerical assessments of utilities of technical solutions properties are considered in the article. The problems of comparison of vector assessments and intervals on scales of indicators are presented.
The requirements to the cost of scientific-technical product, designed for prototype job, are considered. The hierarchical structure of engineering-and -economical design for application at implementation of process of adaptative behavior of economic agents on supply-demand scheme is presented.
Examined method formation of model's elements description makes possible to solve the problem of construction hierarchy of model's automatic perfomance in this application domain. System concept based on serial transition from the general to the particular, various gain size models is used the each phase is considered.
Methodology of automated forming of weak-formalized manufacturing documents for support the production processes of an enterprise on the basis of the cybernetic methods is considered. A model of elaboration of automaed documents preparation technology with use of automated lexicological synthesis is presented. The technology being proposed allows substantially reduce the man-hours at making of full-text documents.
The method of multipurpose decision making as a problem of fuzzy programming is considered. For expression of desire levels the method of preferences determination of criteria and achievability assessment is used.
The optimization of engineering solution of piezoactuator on multiple criteria using gradient method of quickest descent is suggested. The iterative procedure with search of minimum of displacement in direction to the minimum in constraint zone is considered. It is shown, that at development of bimorph elements of piezoscanner it is necessary to take into account their lateral and longiticunal vibrations.
The modelling of the problem of rational replacement of equipment, operational costs on which increase as a result of its wear is considered. The discrete character of operation control of modern equipment is conditioned by hierarchical structure and formation of control as a set of alternative variants.
The problems of parameters identification and optimal control at production of MEMS-gyroscopes are considered. The equations of dynamics of gyroscopic system in matrix form and equations of boundary conditions are given. The maximum likelihood approaches are investigated for variety of parameters, which increases the accuracy of a MEMS-gyroscope. The overview of produced MEMS-gyroscopes is presented.
Principal schemes of piezoactuators and approach to design automation of piezomechanical devices based on known machine methods are considered. Machine experiment to estimate applicability of finite element method to design of piezoactuators is conducted. Technical solutions of piezoactuators with heat pipes and technical process control systems are proposed. Physical processes in heat pipes are described. Decision-making algorithms are considerered.
The application of neural networks for prediction of long-term changes of observed parameter on the example of thermal treatment control of concrete products is considered. Experimental results are presented, and the algorithm of the work plan of an actuating mechanism is proposed.
The technical solution of a piezodrive for nanotechnology is presented. The problems of optimization by methods of penalty function and Fletcher—Reeves are considered. Both methods are described by equations and are presented in matrix form for convenience.
The importance of inventive work in technical progress and professional education, and also mechanisms of improvement of inventive activity among students are considered.