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A generalized mathematical model has been introduced to describe the level of fire safety of systems for saving and supplying water, as it is presented in terms of the theory of fire safety. Such a generalized mathematical model takes into account the probability of the appearance of a combustible medium and an ignition source. It is shown that for the appearance of a combustible medium in the hydrogen storage and supply system, it is necessary and sufficient the simultaneous appearance of a combustible substance and an oxidizer. When determining the probability of an ignition source, an exponential dependence is used, the time constant of which is proportional to the value of the minimum ignition energy of the combustible medium. For the purpose of assessing the level of fire safety of systems for saving and supplying water, the control system is victorious, the functioning of which is characterized by the ability to operate without a driver. This allows you to win against the fluctuations of the health of the systems of saving and supplying water in the fire-safe and fire-safe camps, as well as to gain the counter for the fluctuations of the deaths of the first and other births. The presence of these viruses allows to induce a virus, which reflects the reliability of the functioning of such a water system. It has been wised up for some time to improve the reliability of the functioning of the system for saving and supplying water. Taking this condition into account makes it possible to formulate requirements for the control system, in particular, for the probability of its failure-free operation or for the intensity of its failures. For illustration of these minds, there were some graphical fallows, which allow to again an express assessment of the indicators of reliability and control of water supply systems. It is shown that with total control of this efficiency, which does not seem to be ideal, with an integral indicator of 0,5 and equal to the fire safety of the system for saving and supplying water 0,01, the efficiency of the controllers robotic system is more than 0,995. It should be noted that for the same minds, the control of the system is responsible for saving water supply at equal her fire safety 10-3 for an hour interval 103 , the intensity of the waters of the control system is no more to blame Keywords: fire safety, control system, water supply saving system.
A generalized mathematical model has been introduced to describe the level of fire safety of systems for saving and supplying water, as it is presented in terms of the theory of fire safety. Such a generalized mathematical model takes into account the probability of the appearance of a combustible medium and an ignition source. It is shown that for the appearance of a combustible medium in the hydrogen storage and supply system, it is necessary and sufficient the simultaneous appearance of a combustible substance and an oxidizer. When determining the probability of an ignition source, an exponential dependence is used, the time constant of which is proportional to the value of the minimum ignition energy of the combustible medium. For the purpose of assessing the level of fire safety of systems for saving and supplying water, the control system is victorious, the functioning of which is characterized by the ability to operate without a driver. This allows you to win against the fluctuations of the health of the systems of saving and supplying water in the fire-safe and fire-safe camps, as well as to gain the counter for the fluctuations of the deaths of the first and other births. The presence of these viruses allows to induce a virus, which reflects the reliability of the functioning of such a water system. It has been wised up for some time to improve the reliability of the functioning of the system for saving and supplying water. Taking this condition into account makes it possible to formulate requirements for the control system, in particular, for the probability of its failure-free operation or for the intensity of its failures. For illustration of these minds, there were some graphical fallows, which allow to again an express assessment of the indicators of reliability and control of water supply systems. It is shown that with total control of this efficiency, which does not seem to be ideal, with an integral indicator of 0,5 and equal to the fire safety of the system for saving and supplying water 0,01, the efficiency of the controllers robotic system is more than 0,995. It should be noted that for the same minds, the control of the system is responsible for saving water supply at equal her fire safety 10-3 for an hour interval 103 , the intensity of the waters of the control system is no more to blame Keywords: fire safety, control system, water supply saving system.
It is noted that as a generalized characteristic of the functional gas generator, which is sensitive to variations in its parameters, it is advisable to use the transfer function, or its analogue - the amplitude-phase frequency characteristic of the gas generator. The amplitude-phase frequency characteristic of the gas generator includes two components - amplitude-frequency and phase-frequency characteristics. During the operation of the gas generator, there will be variations in its parameters - transmission coefficient and time constants, due to aging processes and the influence of external factors. Variations in the parameters of the gas generator lead to variations in its amplitude-frequency and phase-frequency characteristics. Mathematical models for variations in the frequency characteristics of the gas generator are built and it is shown that their frequency range should be limited by the bandwidth of the gas generator. The upper limit of the bandwidth of the gas generator is determined by the root of the biquadratic algebraic equation. For the typical parameters of the gas generator using a hydroreactive sample based on sodium aluminate, graphical dependences of variations of its amplitude-frequency and phase-frequency characteristics are constructed depending on variations of the transmission coefficient, time constants, and frequency. These dependencies are used to determine the parameters of the normal distribution law of variations in the frequency characteristics of the gas generator. In accordance with Lyapunov's rule, a normative law for the distribution of variations in the frequency characteristics of the gas generator is adopted. Due to the symmetry of the distribution of variations in the amplitude-frequency and phase-frequency characteristics of the gas generator, their mathematical expectations are equal to zero. Obtaining estimates of the amplitude and phase reliability of the gas generator is carried out using the Laplace function. The argument of this function is the permissible values of the frequency characteristics of the gas generator and their root mean square deviations. It is shown that with probabilities of 0,9973 and 0,9812, the amplitude-frequency and phase-frequency characteristics of the gas generator will not differ more than when it is turned on. Keywords: gas generator, reliability, frequency characteristics.
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