SU696496A1 - Analyzer of extremums of random processes - Google Patents

Description

one

The invention relates to specialized computer hardware and can be used to determine the parameters of random processes.

A known analyzer is used to obtain a pulse amplitude distribution. The C consists of a spectrometry amplifier, an amplitude block, converting a switch, a control device, two memory storage devices, and an x-ray power supply unit xf.

However, this device can only be used to obtain the amplitude distribution of pulses that have normalized parameters, i.e., the length and steepness of the leading and trailing edges, and many random processes that are to be studied do not provide such normalized pulses to the analyzer input.

The closest in technical essence to the content is an analysis

a torus of extremes of random processes containing a pulse shaper, an output shaper, and an amplitude analyzer 2.

However, signals of only one polarity should be fed to the input of this analyzer, which does not allow one to obtain the distribution of extremes of random processes for different polarity signals in the random process under study.

The aim of the invention is to extend the functionality by determining the probability distribution of random processes of both positive and negative polarity.

This is achieved by introducing a delay element, a detector, two threshold elements, an AND element, an adder, and an element of the electrodes. The output of the input driver is connected to the inputs of the first threshold element and the detector, the output of which is connected to the inputs of the pulse generator, the delay element and the second threshold element 369, the output of which is connected to the first input of the prohibition element, the second input of which is connected to the output of the adder. The output of the inhibit element is connected to the input of the amplitude analyzer. The second output of the pulse generator is connected to the first input of the element I, the second input of which is connected to the output of the first threshold element. The output element And is connected to the first input of the adder, the second input of which is connected to the output of the amplitude modulator, the inputs of which are connected respectively to the outputs of the pulse former and the element aadern. The structural diagram of the analyzer is shown in the drawing. The analyzer b contains the input signal shaper 1, the detector 2, delay element 3, pulse shaper 4, amplitude modulator 5, adder 6, prohibition element 7, amplitude pulse analyzer 8, threshold elements 9, 1О, and element 11. . at once. The signals of a random process, both positive and negative, are transmitted through shaper 1 to the input of detector 2 and the first threshold element J. At the output of detector 2, signals of a positive, so li negative polarity, become positive and arrive at the input of a shaper ow 4, the delay element 3 and the second threshold element 9. The pulse shaper 4 is designed to perform a standard pulse having a certain duration and amplitude after the passage through a low extremum the total value of the random process under investigation. The signals from the output of pulse generator 4 are fed to one of the inputs of the amplitude modulator 5 and element 11, the other input of the amplitude modulator 5 through the delay element 3 receives signals from the output of the detector 2. Introduction to the analyzer of the delay element 3 allows you to more accurately obtain the distribution probabilities of extremes of a random process due to the generation in the amplitude modulator of 5 normalized pulses in time intervals that include the extremes of the random process under study. Normalized pulses from the output of the amplitude modulator 5 are fed to the second input of the adder 6, then the prohibition element 6 7 and recorded in the analyzer 8. The amplitude pulse analyzer 8 has N channels, and in the channels having numbers from 1 to - | random process with a positive polarity, and in the channels having the numbers from (+1) to m, the signals have a negative polarity. The threshold element 10 is designed in such a way that it is triggered only by a negative polarity pulse appearing at the output of the shaper input signal 1. The triggering of the threshold element 10 allows the standard pulse, applied by the shaper 4, to pass through the And .11 element to the first input adder 6. The amplitude of the standard pulse arriving at the first input of the adder 6 is always the same and corresponds to the amplitude of the channel with the number -j of the pulse analyzer 8. Thus, if a positive c is investigated uchayny signal, the threshold element 1D is not activated, the signal at the first input of the adder 6 is zero, and the second input of the amplitude of the signal-to-point interp extremum. Information about the positive signals being investigated goes to the first half of the channel with numbers from 1 to the analyzer 8. If a negative random signal arrives, the threshold device 10 triggers, a standard pulse with an amplitude corresponding to the amplitude of the channel appears at the first input of the adder 6 The number D of the pulse analyzer is 8, and at the second input of the adder 6 is a normalized pulse with an amplitude equal to the amplitude of the signal under study at the time of the extremum. Information about the negative signals being investigated goes to channels with numbers from (+1) to N of the analyzer 8. In order to test positive signals with an amplitude greater than the signal amplitude of the channel number, do not fall into the distribution corresponding to the negative signals being studied, a threshold element is introduced into the proposed device 9 and prohibit element 7. Prohibit element 7 passes from the output of the adder 6 to the input of the pulse analyzer 8 signals of additional access to the control input of the prohibition element: 7 signals from the threshold element 9. The threshold element 9 is triggered if the amplitude of the signal at its input exceeds the value of the signal

corresponding to the amplitude of the channel with the number of pulse analyzer 8.

Claims (2)

1. Instruments and equipment of experiment No. 6, 1976, p. 105-106, 2. Authors ’Briefing of the USSR No. 471592, cl. Q 06 dated 7/52, 1973. 0