КОМПЛЕКСНЫЙ АНАЛИЗ УСТОЙЧИВОСТИ СИСТЕМ УПРАВЛЕНИЯ ДВИЖЕНИЕМ ПОЕЗДОВ К СВЕРХШИРОКОПОЛОСНЫМ ЭЛЕКТРОМАГНИТНЫМ ИМПУЛЬСАМ ПРЕДНАМЕРЕННОГО ВОЗДЕЙСТВИЯ

Abstract

The problem of ensuring the stability of microprocessor systems of railway automatics to ultra- wideband pulses of an electromagnetic field is considered. The vulnerability of modern microproces- sor control systems and ensuring the safety of train traffic to electromagnetic impulses of deliberate influence is shown. The features of safety-critical microprocessor systems of railway automatics are highlighted, which determine the difference between the problem of ensuring the stability of these systems from the same problem with respect to information systems. Electrostatic discharge has the widest frequency spectrum. They act on the same apertures in the housings of technical means of microprocessor systems of railway automation, as the impulses of delib- erate action. When an electromagnetic wave of an intentional impulse is incident, the aperture releases this impulse and transmits it to the inside of the case. Therefore, an intentional impulse emitted into the housing and an electrostatic discharge impulse can be compared in shape and amplitude using the spectral-energy equivalence condition. The calculation of the energy and the active frequency band of the pulses most often used as deliberate pulses is considered. It is demonstrated that the calculation of the active frequency band in engineering practice is carried out by constructing an integral curve of the energy distribution in the spectrum. A technique has been developed for the indirect assessment of the impact of an electromagnetic pulse of deliberate action according to the calculated prediction of resistance to electrostatic discharges. An analogue of the equation of power suppression of radio-electronic means is demonstrated in the article allowing finding the parameters of an electromagnetic pulses generator which creates pulses dangerous for microprocessor systems of railway automation. An expression is also given for the intensity of interference, which characterizes the contribution of deliberate electromagnetic pulses to the electromagnetic environment at the location of the microprocessor equipment of railway au- tomation.