The system control test bench, fuel equipment of diesel engines. The use of asynchronous motor together with the Converter of frequency allows to create an effective budget system of adjustable electric drive for maintenance of necessary speed asynchronous electric drive depending on pressure. The proposed management system provides the fuel supply pressure-stable, leading to a significant decrease in hydraulic loads of fuel and diesel equipment. The use of frequency Converter reduces the dynamic load on the engine and optimize operating currents, which creates conditions to reduce energy consumption and increase the service life of machinery.
This article presents the methods of analysis of the dynamics of bioelectrical activity of the flexor muscles of the little finger of his right hand as a reaction to the static force in compression dynamometer, manifested in changes of the quasi-attractors parameters. The main research methods were deterministicstochastic methods and methods of the chaos theory and self-organization to describe complex biological systems. The authors present a comparative analysis of calculating the parameters of the obtained results, in particular, in the framework of the chaos theory and self-organization - the calculations of the phase plane and their areas; in the framework of the deterministic-stochastic approach - the calculation of the Shannon entropy. Calculations are aimed at assessing the level of randomness of the recorded signal. Analysis of the recorded signal and the evaluation of the level of randomness in a signal of bioelectrical activity of muscles showed that an increase in the static load quasi-attractors bioelectric muscle activity increases dramatically. The degree of change was estimated by calculating the parameters of quasi-attractors according to the chaos theory and self-organization. The changes of state of the system in the direction of increasing the degree of variability in the bioelectric activity of the extensor muscles of the little finger are demonstrated. The high efficiency of application of the chaos theory and self-organization in the assessment of the neuromuscular human system is showed. The obtained results allow to determining the level of the ability of performing the specified operations under the influence of static loads.
The scope of compartment-cluster theory of biosystems is in modeling of voluntariness (or involuntariness) of postural tremor and occurs due to the changes in external control drives Ud from 1st (supervisor) cluster. In this case, there are variations in the frequency response and autocorrelation functions, which is typical for tremorogramm of postural tremor and in case of Parkinson´s disease. The voluntariness of the tremor may occur only in the change of quasiattractors’ parameters in models (changing dissipation coefficient b), that is observed in changes of phy-siological states in the organism (con sciously).
The comparative analysis of the dynamics of changes in the bioelectric activity of muscles in response to changes in static stress in the muscle is presented. As the main result of this study after an data analysis obtained by the methods of the chaos theory and self‐organization to describe complex biological systems, it was established low efficiency of deterministic‐stochastic approach. Shannon entropy calculation is performed in different functional states of the muscles. Analysis of the recorded signal and evaluation of randomness in the recorded signal of electro‐myograms showed that with increasing load the size of quasiattractors of the recorded bioelectric potentials of the muscles increases dramatically, but the results of the analysis based on the calculation of the entropy, i.e. the thermodynamic approach, are statistically insignificant. The results allow to conclude that deterministic‐stochastic methods (in particular, the thermodynamic methods) in the assessment of electro‐myograms have low efficiency, and should be used for calculating the area quasi‐attractors of S in evaluating the physiological state of the human body (its homeostasis).
The evolution of biological systems on the example of changes in anthropometric indicators of the three age groups of pupils Ugra and Bashkortostan Republic from the perspective of theory of chaos and self-organization is considered. The kinematic parameters of complex systems (systems of third type) based on the motion simulation system of the state vector x(t) in the phase space of state were calculated. A special mathematical apparatus for calculation of the centers of quasi-attractors (areas of phase space in which x(t) changes continuously) and the rate of evolution was used. The authors demonstrated the calculations of the quasi-attractors’ volumes, the coordinates of their centers, as well as the velocity of these centers and the rate of evolution of biological systems in the phase space of states. A comparative analysis of the kinematic characteristics of students of Ugra and Bashkortostan Republic showed significant differences in the dynamics of anthropometric parameters.
Questions of influence of average interval, accuracy of application of intervals between shoots and field germination of seeds on relative harvest are considered. The depen-dences of the relative yield of sugar beet from the average interval between shoots, the coefficient of variation of the interval between shoots with the influence of field germination are got. These dependencies are installed with process simulation of flow transformation of seeds obtained from the sowing, in the flow of plants and then calculating the relative yields. The basis of the simulation is mathematical, logical and experimental data, so the results are close to the actual ones.
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