SU1091303A1 - Harmonic oscillator - Google Patents

Abstract

HARMONIC BOXES, containing a serially connected master oscillator, a first frequency divider with a variable division factor, the first Walsh function generator, a first block of analog keys and a first block of weighting factors, a series of analog keys, the second block weighting factors, as well as the first analog inverter, the input and output of which are connected to the corresponding reference inputs of the first analogue block output keys, as well as the first code setting unit, the output of which is connected to the control input of the first frequency divider with a variable division factor, characterized in that, in order to improve the accuracy of setting the frequency of harmonic oscillations, the first code-voltage converter is introduced into it , a second code setting unit, a second code-voltage converter, and a second analog inverter, a third block of analog switches, a third block, and a third coefficient set of coefficients coefficients, The fourth block of analog switches and the fourth block of the weighting factors, the second frequency divider with a variable division factor, as well as the adder, the inputs of which are connected to the outputs of the third and fourth blocks of the weighting coefficients, and the signal input of the second divider are connected to the output of the master pulse generator. frequencies with a variable division factor, the output of which (L ogo is connected to the input of the second generator of Walsh functions, and the control input is connected to the second block setting the codes, the input and output of the second analog | inverter are connected to the corresponding reference inputs of the second block of analog switches, the output of the first block of setting the weights (O is connected to the signal input of the third analog block of the analog switches, the control inputs of which are connected to the corresponding the outputs of the second Walsh function generator, the output of the second set of weighting factors is connected to the signal input of the fourth block of analog switches, the control inputs of which are connected to the corresponding The outputs of the first Walsh function generator, and the output of the first code setting unit are connected to the input of the first code-voltage converter, the output of which is connected to the input of the first analog inverter.

Description

The invention relates to radio engineering and can be used as a source of electrical oscillations in various automation devices, from measuring equipment. Harmonic oscillators are known in which the Walt function generators fi are used to generate harmonic oscillations. However, the known harmonic oscillator has an insufficiently high frequency setting accuracy. The closest to the technical essence is a harmonic oscillator containing. Sequentially connected master oscillator, first frequency divider variable division ratio (DPKD), the first Walsh function generator, the first block of analog keys and the first th unit for setting weights, serially connected second Walsh function generator, second block of analog switches, second block for specifying weights, and also a first analog inverter, whose input and output are connected to the corresponding reference inputs of the first block of analog keys, and also the first block setting codes, the output of which is connected to the control input of the first However, in this harmonic signal generator, for a given number of channels in blocks of analog keys, the frequency setting accuracy is also not enough quite high. The purpose of the invention is to improve the accuracy of setting the frequency of harmonic oscillations. To achieve the goal, the harmonic oscillator contains serially connected master clock generator, the first PDCD, the first Walsh function generator, the first block of analog keys and the first block of weighting factors, connected in series the second Walsh function generator, the second block of analog keys, the second block weighting factors, as well as the first analog inverter, the input and output of which are connected to the corresponding reference inputs of the first block of analog switches, as well as the first block of codes, the output of which is connected to the control input of the first DCDD, the first code-voltage converter, the second block of the code setting, the second code-voltage converter and the second analog inverter, connected in series by the third block of analog keys, are entered and the third block of assigning weighting coefficients, the fourth block of analog switches and the fourth block of assigning weighting coefficients, the second PDCD, as well as the adder, whose inputs are connected to and connected to the outputs of the third O and the fourth block for setting weighting coefficients; the signal input of the second PDCD, the output of which is connected to the input of the second generator of Walsh functions, is connected to the output of the master pulse generator, and the control input is connected to the second block of setting codes, the input and output of the second analog inverter are connected to the corresponding reference inputs of the second block of analog switches, the output of the first block of setting weighting factors is connected to the signal input of the third block of analog switches, the control inputs of which are connected with the corresponding outputs, the second Walsh function generator, the output of the second set of weighting factors is connected to the signal-i input of the fourth block of analog switches, the control inputs of which are connected to the corresponding outputs of the first Walsh function generator, and the output of the first setting block of the codes is connected to the input of the first a code-voltage converter, the output of which is connected to the input of the first analog inverter. The drawing shows a structural electrical circuit of a harmonic oscillator. The harmonic oscillator contains the master oscillator i pulses the first block 2 of setting the codes, the second block 3 specifies the codes, the first divider 4 with a variable division factor (DPKD), the second divider 5 with a variable division ratio (DP & D), the first generator of the Thickness 6 functions, the second generator Walsh functions 7, first block 8 of analog keys 8, second block 9 of analog keys, first converter 10 code-voltage, second converter II code-voltage, first block 12 for setting weights, second block 13 for weighing coefficients, third block 14 3 analog keys, fourth block 15 analog keys, third block 16 setting weights, fourth block 17 setting weights, adder 18, first analog inverter 19, second analog inverter 20. Harmonic oscillator works as follows. The output signal is generated in accordance with the following mathematical transformation. 5in (uJ + fi | sihcyt cosS tfsinSJtcosWi (- where s and 5 are frequencies that vary with different discreteness (for example, after 1 Hz and 0.1 Hz, respectively)) Signals are obtained based on the simulation of the Walsh function. For example , the component i CoSuJt is determined by t1.W1 (t) 005 wt where b, k are the Fourier – Walsh C coefficients of the master oscillator 1 of the pulses, the pulses with frequency arrive at the first and second PDCD 4 and 5, the values of the division coefficients of which are With the help of the first and second blocks 2 and 3, the codes. In the first and second generators 6 and 7 functions The waves are generated by the Walsh function signals, which are fed to the control inputs of the first and second blocks 8 and 9 of the analog switches, the corresponding reference inputs of which receive direct and inverse signals from the input and output of the first and second analog inverters 19 and 20. The outputs of the first and second The second blocks 2 and 3 of the task codes are connected to the inputs of the first and second analog inverters 19 and 20 through the first and second code-to-voltage converters 10 and 11, respectively. This allows the frequency dependence of the reference voltages arriving in the first and second blocks of analog switches to be introduced, which improves: the accuracy of approximation of the output signal realized as two sinusoids, arriving at thirds of 034 and fourth blocks of anadogonic KJii-vche 14 and 15, respectively. The accuracy of the approximation is achieved by implementing the components defined by the expression n SinuJ-tKuJ (t), (31 which correspond to the integration of expression (2). The frequency dependence of the coefficients in the Walsh functions in expression (3) is realized by introducing frequency dependent reference voltages into the first and second blocks of analog switches. The control inputs of the third and fourth blocks of analog keys 14 and 15c of the outputs of the second and first generators of the Walsh functions 7 and 6, respectively, receive signals corresponding to the Walsh functions. the multiplication of two functions is performed in accordance with the expression SinouicosSlt SinW-t b W (t) + b W (t) f ... ... (- t) (4-) As a result, the multiplication of the functions sinujt is replaced by multiplication. sinut - VW1 (i) by adding the products obtained taking into account the weighting coefficients {) of the patients. Since Wk (tj is either +1 or LiOc) -, multiplication is replaced by addition. When multiplied by -1, the analog signal goes to the reference inputs of the first and second blocks of analog switches from the output of the corresponding analog inverter. The signals from the output of the third and fourth blocks of analog switches go to the third and fourth blocks of the weighting coefficients, respectively, and then go to the adder 18, at the output of which the signal sin (ui + fl) t is generated. Thus, in comparison with the known device, when TG.1. The same number of channels in the blocks of analog switches, a more accurate transmission of the output signal to the harmonic function is achieved and the accuracy-Gt is increased. setting the frequency of harmonic ko.-. when using the invention.

t Kl "v

Lj

El-j

four:

tf ttt

one

H

4J

Claims (1)

HARMONIC OSCILLATOR, comprising a serially connected master pulse generator, a first variable frequency divider, a first Walsh function generator, a first block of analog keys and a first block for setting weight factors, connected in series with a second Walsh function generator, a second block of analog keys, a second block assignment of weighting factors, as well as the first analog inverter, the input and output of which are connected to the corresponding reference inputs of the first block of analog cl whose, as well as the first block for setting codes, the output of which is connected to the control input of the first frequency divider with a variable division coefficient, characterized in that, in order to improve the accuracy of setting the frequency of harmonic oscillations, the first code-voltage converter is introduced into it, connected in series to the second block setting codes, a second code-voltage converter and a second analog inverter, connected in series with a third block of analog keys and a third block for setting weights, in series with a single fourth block of analog keys and a fourth block for setting weight factors, a second frequency divider with a variable division coefficient, and an adder whose inputs are connected to the outputs of the third and fourth blocks for setting weight factors, while the signal input of the second frequency divider is connected to the output of the master pulse generator with a variable q division coefficient, the output of which is connected to the input of the second generator of Walsh functions, and the control input is connected to the second block for setting codes, input and output One of the second analog inverter is connected to the corresponding reference inputs of the second block of analog keys, the output of the first block for setting the weight coefficients is connected to the signal input of the third block of analog keys, the control inputs of which are connected to the corresponding outputs of the second generator of Walsh functions, the output of the second block for setting the weight coefficients is connected to the signal input of the fourth block of analog keys, the control inputs of which are connected to the corresponding outputs of the first generator of Walsh functions, and the output of the first code setting unit is connected to the input of the first code-voltage converter, the output of which is connected to the input of the first analog inverter.