SU756601A1 - Multiplier of frequencies of harmonic signals - Google Patents

Description

The invention relates to computing, is intended for use as a frequency multiplier and can be used in devices for the intra-division of ^e (interpolators) raster measuring transducers displacement.

Known frequency multipliers monic signals, contain a differentiating circuit, a key element controlled by pulses from the output of the differentiating circuit, an integrating circuit, the input of which is connected to a key element, and the output is connected to a '15th diode bridge, from one diagonal of which a signal is taken through a capacitor. The disadvantage of the described device is the limitation of its functional capabilities {Ί.} ·

Also known are frequency multipliers for harmonic signals, which contain a signal source, and series-connected frequency multiplication stages, each of which consists of two full-wave rectifiers whose inputs are connected to input multiplexing buses and outputs are connected to the sum-30 inputs.

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torus, the output of which is connected to the first output bus of the frequency multiplication stage, and the outputs of the signal source are connected to the input buses of the first cascade frequency multiplication? The disadvantage of the known frequency multiplier harmonic signals is not a high enough multiplication factor and the amplitude of the output signal.

The purpose of this frequency multiplier for harmonic signals is to increase the multiplication factor and the amplitude of the output signal.

The goal is achieved 'by the fact that the frequency multiplier of harmonic signals containing a signal source and N-series, included frequency multiplication stages, each of which consists of full-wave rectifiers, whose inputs are connected to the input buses of the multiplication cascade, and the outputs are connected to the inputs of the adder whose output is connected to the first output bus of the frequency multiplication stage, the outputs of the signal source connected to the input buses of the first cascade frequency multiplication, are entered into each cascade multiply Ia frequency three dopol3 756 601 4

suspicious adders and two additional full-wave rectifiers connected respectively to the outputs of the first and second additional adders and the inputs of the third additional accumulator, whose output is connected to the second output> bus of the cascade, and the inputs of the first and second additional adders are connected to the input buses of the multiplication cascade frequency.,

Fig, 1 shows the structural 'electric circuit frequency multiplication; in fig. 2 and 3 are time diagrams explaining the operation of this frequency multiplication of harmonic signals, 1

FIG. 1, the following notation: 1-signal source; , '2-g

first additional adder; 3 second additional adder; ι 4,5 two-wave rectifiers, 6,7 - 2

full-time full-range flashers; 8 adder; 9-third additional adder; 10 ^, 10 ₂ , 10 ^, ...

Yu |> -kaskadov multiplication.

The frequency multiplier works as follows.

The signal source 1 produces two orthogonal signals snp and cos (see fig. 2-1a and 2-1 <r), the modules of these signals are distinguished, ΒΪηωΐΙ and- / cos1r ± | , (Fig. 2-18 and 2-1Ζ).

.Further, the signals are summed in the summator 8, the voltage at its output is triangular and 2 times more in frequency, the analytical expression .. s1n (Pb - {soy (Fig. 2-10). In the first. Adder 2, the signals are summed up s1p and cos <Db:. s1p + cos or b = Υ2 cos (Sb - 45 °)

(see FIG 2-2ts..), and the second adder 3 adds the signals βίη <£> b and 40 cos (db: z n - cos (& D =, -ίτβίηίωί:! -r 45 ^th) (Figure 2. -2ί). Signal: - Sozb is shown in Fig. 2-26. The total signals (shown by a dashed line) have an amplitude of В2 times greater than 45 of the input signal, - By selecting the coefficient, the gain of the adder 2 and 3 equalizes with the amplitude of the input signals (i.e., amplitude rationing is performed.) The signals shown by the dotted line in Fig. 2-20, <1, after Normalization. _ are repeated in Fig. 2-30; O, respectively; their Ana ? Ogicheskoe expression: GBS (SH - 45 °) and cos (And - "

45 °). In the full-wave rectifiers ⁵⁵ 6 and 7, the modules of the signals are output from the adders 2 and 3. After the separation, the signals of the modules look like in FIG. 2-Зб, г: | з! П (ШЬ - 4?) | and - {cos (“b 45 °) 1. Further, these signals are summed in the third adder 9, and at its output a triangular voltage (Fig. 2-3 <?) Doubled, a frequency shifted in phase by 90 ° relative to the triangular voltage,,

shown in FIG. 2-13, This is how a sinusoidal signal is converted into a triangular signal, twice the frequency in the 1D multiplication stage, the formation channel. Further. Consider the operation of the next cascade 10a, to the input of which two orthogonal. in fig. 3-1 $, Ζ, and the voltage at the output of the adder 8 (Fig. 3-13) have a triangular form and four times greater frequency.

The same triangular signals (Fig. 3-., 10, cp are summed and subtracted in adders 2 and 3. The signal of the sum of the triangular voltages (Fig. 3-20.6 ^- ) has the form of an isosceles trapezium '.

(Fig. 3-28). The difference signal is shown in FIG. 3-30 and also has the form of a trapezoid. Forming the modules of these trapezes (Figs. 3-4a, 6) are shown by a dotted line in the full-wave rectifiers 6 and 7 and summing these modules in the adder 9 we obtain a triangular voltage of four times the frequency (Fig. 3-46). and shifted in phase by 90 ° relative to the signal of FIG. 3-13. This doubles the frequency of the triangular signal into a cascade of multiplication 10 ^. To the input of the proposed frequency multiplier can be connected as usual, sine. cosine measuring transducer, as well as signals of a special (triangular) shape from the source of input signals. That is, the functionality of the proposed frequency multiplier is much broader. In addition, in the proposed multiplier there is nothing that limits the frequency range and speed of the entire device; there is no need to install separation filters between the multiplication stages. Therefore, the triangular signals are not distorted, and the entire frequency multiplier is characterized by a uniform amplitude-frequency characteristic. The amplitude of the triangular signals does not vary from cascade to cascade cell, no additional amplifiers are required. The total multiplication factor is 2 ⁿ , where ^{n is the} number of cascades in the channel.

Claims (1)

Claim Frequency multiplier of harmonic signals containing a source of cascades and N-series-connected: frequency multiplication cascades, each of which consists of two full-wave rectifiers, whose inputs are connected to the input buses of the cascade, cada multiplication, and the outputs are connected to the inputs of the adder, whose output with the first output bus'kaska yes frequency multiplication, and the outputs .. five 756601 6 The signal source is connected to the input buses of the first frequency multiplication stage, characterized in that, in order to increase the multiplication factor and the amplitude of the output signal, three additional adders and two additional full-wave rectifiers connected respectively between the outputs of the first and second adders and inputs of the third additional adder, the output of which connects to the second output bus of the cascade, and the inputs of the first and second additional x · adders are connected to the input tires of a cascade of frequency cuts