SU1599875A1 - Method of forming signal delay - Google Patents

Abstract

The invention is intended for machine modeling on analog-digital computing complexes (ADCC) of the dynamics of complex objects with variable delay of various physical nature. The purpose of the invention is to increase the dynamic accuracy. The time shift between the characteristics of the actual process is replaced by the time shift between the object model voltages, the delayed voltage is converted into a sequence of digital codes, which is written into a closed array of digital memory cells by serially connecting to the data bus by changing the digital code of the address received from The timer pulse counter, in parallel with the recording process, moves the digital-analog playback process with a shift through the array of digital memory cells, the proportion tional voltage simulating temporal shift. The lag simulation in this way allows us to broaden the scope of the APPC, as well as to improve the accuracy, speed and stability of the modeling process. 3 il.

Description

315

the delay time; Fig, 3 - scheme of the method.

The device (FIG. 3) contains analog-digital converters of record 1 and shift 2, converter 3 of delay time i (t) to voltage T (t), timer 4, binary counter 5 of the address code and calculator 6 of the addresses of the playback cells, bus 7 data, bus 8 addresses, an array of 9 digital memory cells, a digital-to-analog playback converter 10, shaper pulses 11-14, and write (play) resolution circuit 15 (16).

The method for generating a signal delay is characterized by the following sequence of operations:

.one. Determine the value of the sampling interval h,

2. Determine the value of the maximum lag time value.

in the number of sampling intervals

3, The sampling of the input non-perfect signal TT (t) in

ICP.

.four. The input signal of the time delay signal is sampled with the sampling interval h, expressing the value of samples in the number of sampling intervals K.

5. Remember the samples of the input signal at each sampling time j (j 0, 1,,., N-1,0,1,. ,, N-1 ,,,,), keeping the value of the pre- (N-1 ) counts.

6. It reads these readings at each instant of sampling time T, related to the moment of recording.

; t (.i-K-J-N) modulo F3 ",

7. Convert the reading of the value into the output of the 1st 1 signal.

The front is the same as

the timer pulses, P irina S, are selected sufficient to set the address on the recording cell through the recording resolution circuit 15. The trailing edge S coincides with the trailing edge S, and its width is chosen sufficient to write the code into the cell .Ui J- the front edge Sj is separated from the gate S for a time sufficient to complete the identification of the code of the playback cell, and its width is setting the replay address via the replay resolution circuit 16. The trailing edge S coincides with the trailing edge Sj, and its width is chosen sufficient for

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45 50 55 execution of onepai H reading from a reproduction cell through a digital to analogue analogue reproducing transducer 10,

Through one of the wires of the code line, through which the code arrives for storage, it is necessary to transmit strobe Sj to the recording cell to enable recording.

The device on the ith discretization interval operates as follows.

The output signal II (t) through analog-to-digital converter 1 recording over gate S is converted into digital code nCiJ, which through width 7 of data according to recording cell number .if iJ following step on gate S from counter 5 through circuit 15, is written into the next cell array 9. The voltage T (t), proportional to the delay time, is converted to a digital code KfiJ by a timer pulse through an analog-to-digital shift converter 2.

By the gate S.. ,,, in the calculator 6 is calculated

MS1D (jC -J-Klil + N) mod N,

The signal then passes through the resolution circuit 16 via gate Sj to 8 addresses, and via gate S, the MG1 cell contents are converted into output voltage U (t - CCt)). This method is universal, since it implements both a constant and a variable delay. Formula of Invention

The method of forming the signal delay based on discretization of the input signal with the sampling interval h and storing the samples obtained during the sampling 1 day, characterized in that, in order to detect the dynamic accuracy, it determines the value of the maximum value N of the late time in the number of intervals sampling, the discrete signal is input on the input signal of the delay time with the sampling interval h, expressing the values of the samples in the number of sampling intervals K, Injection of samples of the input signal is performed at each instant of sampling j (.1 0.1 ,,,, N-1.0, 1 ,, ,,., N-1, ,,.), keeping the value of the previous ones (N-1 ) readings, these readings are read into each

S15998756

sampling time j, referring to the steering wheel N J, and converting them into output at the time of recording t (j - K N) by a continuous signal.

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Claims (1)

Claim A method for generating a signal delay based on sampling a continuous input signal with a sampling interval h and storing the samples obtained during the sampling process, characterized in that, in order to increase the dynamic accuracy, it determines the value of the maximum value N of the delay time in the number of sampling intervals, discretize the input signal of the delay time with a sampling interval h, expressing the values of the samples in the number of sampling intervals K, memorization samples of the input signal are produced at each sampling moment j (j = 0,1, ..., N-1,0, 1, ..., N-1, ...), keeping the value of the previous (N-1) samples , read these samples at every ¹ sampling moment j, related to the time of recording E (j - K + N) according to ** Ij 1599875 6 .dule N J, and convert their continuous signal. output / I UJAlUUA.AAUUUl AVU Al 1 111 1X11 _r t Op r J 4 5 S 7 8? I? П И 0Κ »В» 1118 19 No. 2112 23 No. »No. 17212930! L 31 N-8 Cells