SU838596A1 - Two signal ratio converter - Google Patents

Description

(54) TWO SIGNAL RELATIVE CONVERTER

elements, and the outputs of the p amplifiers are connected to n additional inputs of the first adder, the sources of the first and second input signals are connected respectively to the first and second inputs of the pulse width modulator, and the source of the third input signal is connected to the information input of the first multiplying element.

The drawing shows a block diagram of a two signal ratio converter.

The converter contains a source 1 of the first input signal U and a non-source 2 of the second input signal U / j, / connected to the singing and second inputs of a pulse width modulator (PWM) 3, respectively. The information inputs of the first ME 4 are connected to the source 5 of the third input signal U, and n the second ME 4 through the first input of additional adders 6

The second inputs of additional adders 6 are connected to the outputs of additional amplifiers 7.

The first input of the first adder 8 is connected to the source 5 of the third input signal Do, the second input to the output of the first ME 4 directly other inputs — with the outputs of the second ME 4 through additional amplifiers 7. The output signal proportional to the ratio of the two signals is removed from the output of the first adder eight.

The device works as follows.

The control input of the first ME 4 receives the output rectangular voltage PWM 3, the relative duration of which 8 is proportional to the ratio of the signals U and U2

- The output signal of the first ME 4

ravs -i-9-k

   ()

where K is the transfer coefficient of the DOE. The information inputs of the second ME 4 receive the output voltage and additional adders 6. The output voltage of the second ME 4.

will be:

I.i. ..Q-k.

ME1 41

(2)

The voltage goes to the additional amplifiers 7, the output of which will be the voltage Uji

.-Q-K-K

(five)

2 / i

where the gain of the 1st amplifier.

The output voltage of the additional adders b is the algebraic sum of two voltages

  ()

where K, - and K ... are transfer coefficients, respectively, on the first and second inputs of the i -th additional adder b.

Resha jointly (3 k (4), find the output voltage i-oro of the additional amplifier 7)

 H-i.

. (5) t

; ig4. 0 ±

one

tK

  ai

At the output of the first adder 8, the output voltage of the converter Ugj, is formed, as the algebraic sum of all incoming voltages.

6y..i with

where K gk-gai - respectively, the transfer coefficients for the first, second and j-th input of the first adder 8.

We introduce the notation a - b Kgcg;

g .t /. .C- (t.;

oL K K K 2.

Then the output voltage of the converter is written.

6b. )

OUT 1: -1 "J + 1 / a-j

The voltage Uj is posT and is supplied from the source 5 of a highly stable voltage.

Thus, the converter reproduces the fractional rational function of the type C7) of the ratio of two

Signals 3-zn With a fractional-rational function of this type, a wide class of mathematical dependencies can be reproduced. All coefficients are set independently, so you can provide them with the necessary values.

Claims (1)

Invention Formula The converter is a ratio of two signals containing the sources of the first and second input signals, a pulse-width modulator, an output connected to the control inputs of the first and second multiplying elements based on current switches, the output of the first multiplying element connected to the first input of the first cyNMaTopa, the second the input of which is connected to the output of the source of the third input signal, the output of the second multiplying element is connected to the input of the amplifier, characterized in that, in order to expand 5 features, in pre