SU1046957A1 - Device for monitoring parameters of non-stationary measure signals - Google Patents

Abstract

A DEVICE FOR MONITORING PARAMETERS OF NON-STATIONARY MEASURING SIGNALS, containing an input delay unit, a unit for forming the first auxiliary link, two units of the formation of a reference signal, whose outputs are connected to the inputs of the corresponding comparison units, and a sequential unit of summation and a unit and a single unit and an output unit. that, in order to increase the accuracy of control with an increase in the rate of change of parameters, two blocks of formation of additional and the measurement signal, the unit of evaluation of the mathematical amplification of the signal, the sequentially connected evaluation unit of the signal dispersion and the second auxiliary signal generation unit, the third auxiliary signal generation unit, the third reference signal generation unit and the third comparison unit and the three amplifiers, the first input of the first configuration The body of the additional measuring signal is connected to the input of the input delay unit, the first output of which is connected to the second input of the first form & body of additional measuring signal, the output of which is connected to the first input of the signal dispersion estimator, second output of the input delay unit is connected through the second shaper of the additional measuring signal and the first estimate of the mathematical expectation of the signal to the first input of the forming unit the first auxiliary signal (L of the signal, the second input of which is connected to the second input of the signal dispersion estimator directly, and to the first input through the second the expectation unit, the output of the first auxiliary signal forming unit is connected to another input of the first comparison unit and the third one to the first input of the generating unit: the secondary signal of the auxiliary signal is connected to the output of the second auxiliary signal generation unit, the output of the third auxiliary signal forming unit is connected to another input of the third comparison unit, and the outputs of the comparison units through the corresponding amplifier and are connected to the inputs of the sum.chPfovank block.

Description

The invention relates to electroforms and can be used with temporary disengagement of canaps. A device for monitoring the parameters of measuring signals, containing a losley-connectedly connected delay unit of measuring signals for analysis time, is known, comparing each current value of the measuring signal with the preceding one and forming the control signal shaping unit of the corresponding parameter of the measuring signal for tolerance tl. The known device does not allow to achieve high precision control. Closest to the present invention is a device for monitoring the parameters of non-stationary measuring signals, comprising an input delay unit, a bpok of forming the first auxiliary signal, a power unit of the formation of the reference signal, the outputs are connected. to the inputs of the respective comparison units, and the series-added summation unit and the output unit of the formation of the control signal L However, this device with the control of dynamic, fast-changing parameters, as well as in the measurement signal of unit and group anomalous values does not provide high accuracy of control due to its large inertia, namely: the control signal is generated only after the total signal is proportional to the number of auxiliary signals, the output t for admission. The purpose of the invention is to improve the accuracy of control with an increase in the rate of change of parameters. The goal is achieved by the fact that the device for monitoring parameters of non-stationary measuring signals, contains an input block for the back-up, a block for forming the first auxiliary signal, two blocks for generating a reference signal, whose outputs are connected to the inputs of the corresponding comparison blocks, and serially connected block-summing and the output block of the sum of the control signal, introduced two blocks of formation of an additional measuring signal & a, two blocks of estimating the mathematical expectation of the signal ala, serially connected bpoc estimates of the dispersion of the signal and the second-auxiliary signal generation unit, the third auxiliary signal generation unit, the third reference signal generation unit and the third comparison unit and three amplifiers, the first input of the first shaper of the additional measuring signal connected to the input unit delays, the first output of which is connected to the second input of the first shaper of a positive measurement signal, the output of which Connected to the first input of the signal dispersion estimator, the second output of the input delay unit is connected via a serially connected second shaper of the additional measuring signal and the first estimate of the mathematical expectation of the signal to the first input of the first auxiliary signal generating unit, the second input of which is connected directly, and from the first input through the second expectation unit, the output of the first auxiliary unit The second signal is connected to another input of the first comparison unit and to the first input of the third auxiliary signal generation unit, the second input of which is connected to the output of the second auxiliary signal generation unit and to another input of the second comparison unit, the third auxiliary signal generation unit output is connected to another input of the third block comparison, and the outputs of the comparison units are connected via the corresponding amplifiers to the k inputs of the summation unit en. FIG. 1 shows the structural electrical circuit of the device; on ig. 2 is a table explaining the algorithms of the operation of the device blocks. The device will control the parameters of the stationary measuring signals by the first block 1 forming the additional measuring signal, the second block 2 forming the additional measuring signal, the second, lok 2 forming the additional and measuring signal. The first 3 estimation of the mathematical expectation of the signal, the second locking 4 estimating the mathematical expectation signal, block 5 for estimating the dispersion of a signal, lok 6 of forming the first auxiliary signal | bg1ok 7 of forming a second autogauge signal, block 8 forro Ani third vspomogateggnogo

signal, bpok 9 of forming the first reference signal, bpok 1O of forming the second reference signal, block 11 of forming the third reference signal, block 12 of forming the first ra. from the no signal, block 13 of forming the second differential signal, block 14 of forming the third differential signal, first amplifier 15, second weaner 16, third amplifier 17,

a summation unit 18, a pilot signal output unit 19, and a delay input unit 20.

The device works as follows. J5

The value of the signal with a monitored parameter is fed to the input of the block 2О to the second input of the block 1 forming an additional measuring signal at the controlled point, the first output signal of this block receives the signal from the second output of the block 2О, from the output of block 1 the additional measuring signal at the controlled point is fed to the input of the evaluation unit of the mathematical 2S wait, at the controlled point, also to the second input of bpock 5, the variance estimate, to the first input of this bpok

the output 4, which is fed to the first input side 6 of forming the first auxiliary signal, the second input of which receives a signal from the output of block 3, the expectation estimate,

to the input of which an additional measuring signal is supplied at the point npeit-, with a controlled process, generated by block 2, the input of which receives a signal from the output of block 20, and from the output of block 6, the signal goes to the first input of block 8 to form the third auxiliary signal, the second input of this block receives the second auxiliary signal from the output of the block 7 for shaping the second auxiliary signal;

signal from block 5 output. From output

block 6, the signal is sent to the second

the input unit 12 to form the first

a valid signal, the first input of which receives the first reference signal from the output of block 9 of the formation of the first reference signal. From the output of block 7, the signal goes to the second input of the block 13 to form the second differential signal, the first input of which receives the second reference signal from the block 10 to form the second reference signal. From the output of block 8, the signal is fed to the second input

the third spacing j j signal forming unit 14, the first input of which receives the third reference signal generated by block 11. The signal from the output of block 12 is fed to the input of amplifier 15, where it is amplified according to the selected gain factor, and from the output of amplifier 15 arrives at the first input of the summation signal forming unit 18, the second input of which receives amplified by the amplifier 1 signal from the output of the block 13, and the third input of the block 19 receives the signal amplified by the amplifier 17 and from the output of the block 14.; and su% a global signal is fed to the input of the pilot signal generating unit 19, the output of which is the pilot signal. At the same time, the amplitude of the first reference signal is chosen equal to half the length of the confidence interval of the difference in estimates of the mathematical expectation of the monitored parameter determined by additional measurement signals in the monitored and previous control points, the amplitude of the second reference signal is equal to the length of the confidence interval of the estimated parameter csperse measured by additional measuring signal at the controlled point, and the amplitude of the third reference signal is equal to half the length of the confidence interval of the ratio of the difference between the estimates of automaton; the actual expectation of the monitored parameter, determined from the additional measurement signals at the monitored and preceding monitored points, to the square root of the estimated dispersion of the monitored parameter, determined from the additional measuring signal at the monitored point. The amplitude of the first difference signal is equal to the ratios of the first auxiliary signal and the first reference signal, the amplitude of the second difference signal is equal to the difference of the second auxiliary signal and the second reference signal, and the amplitude of the third one is the difference of the third auxiliary signal and the third reference signal. The gain of the first amplifier 15 is selected from the ratio

where R and TZ. respectively, the confidence and the length of the trustworthy vuiTopBflna of the difference in the estimates of the mathematical response of the counter-defensible parameter, specified by additional signals at the controllable and successive controllable points. The gain of the second amplifier 16 is selected from the ratio .s, Da-. raeRj.J). Mmt. - respectively, verify the probability, the total value of the interval & and the mathematical evaluation of the dispersion), measured by the continuous measurement signal at a controlled point, and the gain of the third. amplifier 1 is selected from the ratio P and D - the probability of the third Valve confidence interval & nor the difference in estimates of the mathematical expectation of the monitored parameter, targeted by additional measuring signals at the controlled and controlled points, to the square root of their estimate of the spectrum of the monitored parameter, determined by the additional signal at the controlled point, and the formation of a control signal about the output of the corresponding monitored parameter of the measuring parameter from the measuring signal for the tolerance is realized when the amplitude of the total amplitude is reached and positive values. The use of the proposed device for monitoring the parameters of non-stationary measuring signals provides such advantages as the ability to control not only the magnitude of the monitored parameter, but also the law of distribution of the monitored parameter, which is especially important in modern communication technology; the selection with the high-confidence probability of the areas of significant change in the monitored parameters of the measuring signals in addition to the single anomalous values of the monitored parameters of the measuring signals. This method significantly increases the accuracy of monitoring the measurement signal parameters.

Claims (1)

. DEVICE FOR CONTROL OF NON-STATIONARY PARAMETERS OF MEASURING SIGNALS, comprising an input delay unit, a first auxiliary signal generating unit, two reference signal generating units, the outputs of which are connected to the inputs of the respective comparison units, and a summing unit and a control signal generating unit connected in series, characterized in that, with a circuit for increasing accuracy control with an increase in the rate of change of parameters, two blocks for the formation of an additional measuring siKnap, two blocks for evaluating the mathematical signal liquids, a signal dispersion estimation unit and a second auxiliary signal generating unit connected in series: a signal, a third auxiliary signal generating unit, a third reference signal generating unit and a third comparison unit and three amplifiers, the first input of the first additional measuring signal generator being connected to the input of the input delay unit, the first output of which is connected to the second input of the first driver of the additional measuring signal, the output for which it is connected to the first input of the signal dispersion estimation block, the second output of the input delay block is connected through the second shaper of the additional measuring signal and the first signal estimation block to the first input of the first auxiliary signal generating block, the second input of which is connected to the second the input of the signal variance estimation block directly, and with the first input, through the second bpc of the mathematical expectation estimate, the output of the first waveform generation block the auxiliary signal is connected to another input of the first comparison unit and to the first input of the third auxiliary signal generating unit ^ the second input of which is connected to the output of the second auxiliary signal generating unit and to another input of the second comparison unit, the output of the third auxiliary signal generating unit is connected to another input of the third unit comparison, and the outputs of the comparison units through the respective amplifiers are connected to the inputs of the summing unit.