Дослідження енергетики регульованого електроприводу вентиляційної установки пневмомережі млина в ППП «MatLab»

Анотація

RESEARCH OF ENERGY MANAGED TO ELECTROMECHANIC OF A VENT SETTING OF PNEUMONETWORK OF MILL IN РРР "MATLAB"

P. Klendiy, G. Klendiy , O. Dudar

Research  of the modes of operations of the electromechanics systems with the use of physical models has  close character, as physical realization of casual functions of loading is difficult. Therefore the most effective method of optimization of the electromechanics systems with any indignation on their channels is a mathematical design.

In recent year the personal computers are widely inculcated in practice of research developments, that  stipulated further development of digital design of the electromechanics systems. The far of mathematical packages by means of that design the engineering systems is for today worked out, including electromechanics. One of such packages there is LABVIEN - the complex of vehicle, programmatic and technological facilities of analysis, design and management, is oriented to the local objects in a technique. He allows to optimize operating conditions and demonstrate results, due to the libraries. The base modules from that objects gather as user are kept in the system libraries of LABVIEN.

The package  of MathConnex  has similar possibilities in  the environment of MATHCAD ("Mathsoft").

User-friendly, that develops and investigates the models of the electromechanics systems, mathematical packages of DERIVE ("Soft Warehouse"), EUREKA ("Borland"), MATHCAD ("Mathsoft"), MATLAB ("Mathwork").

Packages are above enumerated support the usual arithmetic operating and trigonometric functions, decisions of equalizations, work under imaginaries, determination of integrals,  calculation of derivatives, smoothing of functions and array operations, transformation of Fourier and functions of Bessel, possibility by means of the special commands to present the results of calculations in a graphic form.

Efficiency of application of different packages for the design of the electromechanics systems can be estimated by the criteria of calculable mathematics, basic from that there is universality, simulation language, comfort of application and perspective of conception. Universality of models is determined by their plenitude, that is estimated by possibility of scalene description of object, hierarchicalness,  by a capacity for successive, algorithmic determination of conformities to law and features of his behavior; by a completeness; by a high yield and reliability.

Perspective of conception of designing environment is expressed in the only going near raising and untiing of tasks. The modern designing system is impossible without a capacity for alteration, to readiness to the change of external environments, without facilities of optimization of the configuration taking into account development of object. In general, authority of developer plays an extraordinarily important role from the point of view of perspective chosen in a design straight.

In relation to a simulation language, then here deserve attention of models that is built with bringing in of application of the known producers packages.

A comfort of application is the integrated estimation that characterizes availability and simplicity of the designing system, her attractiveness for mastering (presence of situation certificate facilities, sufficientness of literature); localization,  possibility of commonunication is in national language.

Universal, all-embracing designing decisions are effective only in that case, when they lean on traditionally strong, that develop confidently, collectives of developers, that provide them the assured accompaniment and updating in the river-bed of modern informative technique and practice of the electromechanics systems.

In many practical tasks curiosity presents sometimes not so much quantitative estimation of efficiency of the system, how much is her behavior in that or other situation. For such supervision a researcher must have corresponding "survey windows" that it is possible at a necessity to close, carry into other place, change a scale and form of presentation of descriptions that is observed, thus not expecting completion of current model experiment.

Realization of such possibilities in universal language of programming allows ППП MatLAB and brings to perfection creation of digital models of the electromechanics systems.

Adjusting of frequency of rotation of electric motor of occasion of a vent setting is conducted as follows. Depending on loading of materialwires of pneumotransport network, in pneumobranch and accordingly in a collector there are the defined values of losses of pressure and charges of air, the values of that get on the exits of H1 of i of Q of block of Subsystem. These values are given on the block of Product where necessary power of the pneumotransport setting is determined. The value of charges of air of Q is given on the block of Sum where subtracted from the value of Q back. On the exit of block of Sum a managing signal that is given on a frequency transformer is formed. Depending on the size of signal on the exit of frequency transformer the defined value of tension and frequencies that is consumed by the electric motor of occasion of a vent setting are formed. This system of electrical equipment will support the necessary values of technological parameters (H, Q) for normal work of pneumonet with the rational use of electric power.

This system of electrical equipment will support the necessary values of technological parameters (H, Q) for normal work of pneumonet and allows to determine such power indexes as: consumed by an electromechanic current (1), electromagnetic moment (2) of lines.2; power of lines. 3 and power on the billow of electric motor of lines. 4 at the variable loading of productwires of pneumotransport lines.5. After the start of a vent setting and absence of loading speed of air in productwire arrives at a 30.4 m/of с, and current - 12А and power - 4.5 killowatt.    By way of 1 miute the successive loading of productwires passes after starting pneumosystem here  speed diminishes a to 23.2 m/of с, and a current and power grow accordingly - 13А, 5 killowatt. By way of 6 minutes of work of mill in the energykeeping mode, loading   ( on 20 % nominal) grows sharply, and speed in most high-usage productwire falls rice. 5. If not to rev up here appeal of a vent setting then the obstruction of productwire  will happen. Thus the reaction of the adjusting system on sharp reduction to speed works during a 0.5 - 0.7 p. of adjusting System predetermines the increase of speed of a vent setting and pneumosystem goes out on the new energykeeping mode. Thus speed of aeromixture arrives at a 12.6 m/of p. again, and current - 14А, power - 6 kW, power on the billow of electric motor - 4.9 kW.