SU525113A1 - Four square multiplying device - Google Patents

Description

dinene with the output of the summing-averaging unit 8. The outputs of the limiters 2, 3, 4 and 5, as well as the sources of the second multiplied signal and the output of the inverter 7 are connected to the input of the summing-averaging unit. The device works as follows. The triangular signal from the generator of triangles; about voltage 1 and the sources of the first and second multiplied signal is fed to the inputs of limiter 2, where the negative part of the sum of these signals is limited to zero. Limiter 3 limits the zero positive part of the sum of voltages from the triangular generator and the source of the first and second inverted signal. Triangle 4 inputs a triangular signal, a divider signal and an output voltage of the device U limiter 4 the negative part of the sum of these signals is limited. relatively zero. The positive part of the sum of the signal with respect to zero is limited in the bounds of the reader 5, to the input of which a triangular wave voltage is applied, the inverted signal divider and the output voltage of the device. At the output of the device, we have a voltage equal to

UBbu vj - TTJ i

one-.

but))

) -U (t) dt

tp

jCUBb ,, (t) ,,,, tt

2T. o1 Ti o

tn

-hUjCt).

lt a h

and

out

.5iO

NW)

with this in mind

, t

tp

or

.-c.

(four)

and

Out

and.

Thus, the output voltage is directly proportional to the product of two signals and and U-, divided by the third signal Uj and does not depend on the amplitude of the triangular voltage.

Let the input signals U, and -U variables, And, - be constant. Then, taking into account the above, from (1) we obtain:

ff..xU,

56 from here

U- and cos4,

where and.

and.

§ j are the effective values of the 60 sets of U (+) and Uj (-) K ,, (t) dt.u, (t) U (tWl + оW „. Ju. 5tt) ,,, (t) U5 (t ) di} (1) 1 from -I о where / is the transfer coefficient of the sum averaging device; T is the stress period U. H) and U, lt), the amplitude of the voltage of a triangular shape; TJ - voltage period Uj. The transmission coefficients of the limiters are considered constant and equal to one. Let the input signals U,, it + U, -, and, be constant or slowly varying quantities. Then (1) is converted to the form: Zr lI1 I. t. 1 I f I d. I 1. .- “- r.l- 1 To obtain the desired conversion function, the sources of the second multiplied signal and the inverted signal of the divider are input to the summing averaging device, introduced into the multiplying device. If you choose K 1, then

Z is the angle of shift between them.

Thus, the proposed device can produce four-quadrant multiplication of two variable signals and division by the third permanent signal.

Claims (1)

Invention Formula A four-quadrant multiplying-separating device containing a triangular voltage generator, the output of which is connected to the first inputs of the limiters, the second inputs of the first and second limiters are connected to the source of the first multiplied signal, the third input of the second limiter is connected to the source of the second multiplied signal through the first inverter, the second inputs of the third and fourth limiters are connected respectively to the source of the signal-divider directly and through the second inverter, the outputs of the second and third limiters are connected to the inputs of the summing-averaging unit, the output of which is connected to the third input of the fourth limiter, about t and h e in order to simplify the device, the third inputs of the first and third limiters are connected respectively to the source of the second multiplied signal and to the output of the summing-averaging block, and the outputs of the first second and fourth limiters peremnozhamogo second source signal and the output of the second inverter are connected to respective inputs of the summing-averaged guide block. out