SU741272A1 - Fourier series synthesizer in the basis of rectangular orthogonal functions - Google Patents

Description

the first and second outputs of the N phase inverted cascades are connected respectively to the first and second information inputs of the N switches, the first and second control inputs of the first and second triggers -th pair,, p-2 / 2,1, are connected respectively to the first and second outputs of the first trigger of each () -th pair; the output of the element I is connected to the first input of the weighing and summing unit, and also to the first output of the device; the outputs of the block are weighted 1} and the summations are the second group of device outputs.

The drawing shows a block diagram of the proposed device.

The Fourier series synthesizer in the basis of rectangular orthogonal functions consists of a control block 1, a clock generator 2, a coefficient storage block 3, an AND 4d, N element, paired (odd and even) channels for generating basic functions

Y and, and 4fi 2I

containing phase inversion cascades Ж пг / 5.2,. . .., 5 and 5

switches 6 ,. and b

na

pi

5n-n-c and 1 triggers 7

rt-i n-t-i and the main outputs 8y (and Si devices, weighing and summing unit, second group of outputs: outputs 10 and 10 / devices, output 11. even signal component, output 112 of odd signal component and output device 12.

The device works as follows.

Under the influence of the control pulse generated in the coefficient storage unit 3 after setting the new values of the Fourier coefficients, in the control unit 1 a static pulse is generated, under the influence of which the generator 2 starts to start, closes the factor storage unit 3 in the output mode. zheniye, proportional to the Fourier coefficients, to the inputs of the element And and phase-inversion cascades 5., 5, B. c

, " , five

hHi

ti

After splitting in each phase-inverted cascade 5, 5., n-ia f -t-c 5 (voltages are two equal in amplitude and opposite in sign voltage, the latter go to the first and second inputs of the corresponding two-channel switch 6

General 1i -fZ

DSSHE alternately, depending on the state of the mode

trigger 7, 1.

741G (

- on, pass on

Under the influence of pulses, I coming with a repetition interval

- TRI phase shift per interval

- Tr on inputs of triggers 7 and 7 "with

iepBOro and the second generator outputs 2 clock pulses, triggers 7jy, and 7 generate control pulses with a repetition interval Td

1 and a phase shift of the interval -t-Tr

which governs the sequence of passing through the dual channel switches 6 and 6, -, 2. direct and inverted voltage outputs from the inputs of phase-inverse cascades 5 and BP. In the same way, under the influence of pulses received with a repetition interval T and a phase shift of the TO interval on the counting inputs of the flip-flops (and 7, / s of the first and second outputs of the flip-flop 7d), the flip-flops 7, and T, i generate control signals a repetition interval and a phase shift of 2 T, which regulate the sequence of passing through the two-channel switches 6 and 6 to their direct and inverted voltage outputs from the outputs of the phase-inberstage stages,

and 5.2 "

Removed from the outputs of the elements And and dual-channel switches,,,

,, b converted to 6

ST.

The specified members of the Fourier series in the basis of rectangular orthogonal voltage functions are fed to the outputs 8 and 8 of the device and to the inputs of the block 9 of weighing and summation.

As a result of the corresponding weighing and summation of the terms of the Fourier series in the basis of rectangular orthogonal functions in block 9, weighting and summing at its outputs 10 and 10 over time will form periodically e or aperiodic orthogonal systems of signals of a given type

f (t) 1,, 4w (t) -, (, 2, ..., M

and its outputs And and 12 - signals of a given type

F (t) (t) + b ,, 4n, (t) 1

F (t) ntMf)) (t)

f (t) f (t) f (t), 1 kat. After the specified time interval has elapsed, the stop and control pulses produced in control unit 1 cause the generator to stop operating 2 clock pulses, lock the AND element and transfer the coefficient storage unit from the output mode to the Fourier coefficient change mode to the new values in accordance with the specified work program devices.

Thus, the invention allows to synthesize members of the Fourier series in the basis of rectangular orthogonal functions without complicating the apparatus and reducing the speed.

Claims (2)

Invention Formula A Fourier Row Synthesizer in the basis of rectangular orthogonal functions containing N formation channels for these functions, each of which consists of a phase inverted cascade and a switch, characterized in that in order to expand the class of solved problems, an additional control unit, coefficient storage unit are introduced into it , clock generator, element And, N triggers, weighing and summing unit, the first output of the coefficient storage unit connected to the input of the control unit, the second output of the storage unit coefficient the remaining N outputs of the coefficient storage unit are connected respectively to the inputs of N phase inverted cascades, the first output of the control unit is connected to the input of the coefficient storage unit, the second output of the control unit is connected to the third inputs of the N triggers, the third output is with the first input: the clock pulse generator, and the fourth output - with the second input of the clock generator and with the second input of the element And, the first and second outputs of the clock generator are connected respectively, the first and second control inputs of the first and second triggers, the first and second outputs N of the flip-flops are connected respectively to the first and second control inputs of the N switches, the outputs of which are connected respectively to the input group of the weighing and summing unit, as well as to the first group of device outputs , the first and second outputs of N phase inversion cascades are connected respectively to feathers and. the second information inputs of N switches, the first and second control inputs of the first and second triggers of each pair, where 1) an-1, n-2..2,1 are connected respectively to the first and second outputs of the first trigger of each (L + 1) -th the pair, the output of the element And is connected to the first input of the weighing and summing unit, as well as to the first output 5, the device outputs of the weighing and summing unit are the second group of device outputs. Sources of information taken into account in the examination 0 1. Copyright certificate 451097, cl. G About G 7/26, 1974. 2. Copyright certificate 460549, cl. G 06 G 7/26, 1975 (prototype). -j-dEEKII IiL j; -jr2 -jI | iW .I.-. r4h55№r1R I. r-h g u g -3 | . gu-C Sni LE gffy C-1 7ffy