SU1048488A1 - Multiplying/dividing device - Google Patents

Description

switches, the first and second inputs of the functional converter P, the second switch poles are the fourth input of which is

the second and third input-second input of the first ne | switch, respectively.

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The invention relates to electrical computing devices and can be used in anadog computing machines. .

A multiplier-separating device is known, J containing integrators, comparator, one-shot, key elements, low-pass filter l.

The disadvantages of this device are the limited number of convertible signals and the low accuracy of work.

Closest to the proposed device is a multiplying-dividing device comprising a first multiplier unit connected in series, a second low-pass filter, an integrator whose output is the output of the device, a third switch whose output is connected to another input of the multiplication unit, the output of the multiplication unit through an inverter connected to the second input of the second switch, a multivibrator, the output of which is connected to the control inputs of the switches 2.

However, the known device has a limited scope, since it converts a relatively small number of input signals.

The aim of the invention is to expand the field of application of the device by increasing the number of converted signals while maintaining accuracy of operation.

The goal is achieved by the fact that the device containing the multiplication unit, the output of which is connected to the input of the inverter, the low-pass filter connected in series and the integrator whose output is the output of the first, second and third switches, the output of the first switch is connected to the first input of the multiplier, the second input of which

connected to the output of the second switch, the first inputs of the first and second switches are respectively the first and second inputs of the device, the third input of which is the second input of the second switch, the outputs of the multiplication unit and the inverter are connected respectively to the first and second inputs of the third switch, the output of which is connected to the input a low-pass filter, a functional time ratio converter and a voltage reference source are introduced, the integrator output being connected to the first the function of the time interval function converter, the output of which is connected to the control inputs of the first, second and third switches, the outputs of the reference voltage source are connected respectively to the second and third inputs of the time ratio function converter, the second input of the first switch I1 is the fourth input of the device, n which input is the fourth input of the functional converter of the ratio of time intervals, the output of which is additionally important output of the device.

The functional time ratio converter contains the integrator, the first and second switches and the comparator, to the integrator input by clicking on the output of the first switch, the first input /) of which is the first input of the function converter, the integrator output is connected to the first input of the comparator via the first scale resistor, the second input which is connected to the zero potential bus, the output of the comparator through the second large-scale resistor is connected to the first input of the comparator, the output of which is the output It is connected to the control inputs of the first and second switches, the first and second inputs of the second switch are the second and third inputs of the function converter, respectively, the fourth input of which is the second first switch. Figure 1 shows the functional diagram of the multiplying-dividing device; Fig. 2 is a functional diagram of the functional converter of the ratio of time intervals. The device contains multiplier 1, first, second and third switches 2-, inverter 5, functional time ratio converter 6, source of reference voltage 7, low pass filter 8, integrator 9, first, second, third, fourth and fifth inputs 10-1, output 15, additional output 1b of the multiplying-dividing device, integrator 17 first and second scale resistors 18 and 19, comparator 20, first and second switches 21 and 22, zero potential bus 23, first, second, third and fourth inputs and output 28 functional the converter of the ratio of time intervals 6. I -: A multiplying-dividing device operates as follows. The functional transducer from the time interval 6 forms a sequence of pulses, the ratio of the durations of which is ii iii where Uq is the output voltage of the integrator 9; C4 voltage at the inlet 1 of the first and second switches 2 and 3 at time t | connect signals with. the third and fourth inputs 12 and the inverter 5 and the inverter 5 through the third switch is connected to the input of the low-pass filter 8. If we assume that during this time the signals at the third and fourth inputs 12 and 13 change little, then the change in the output voltage of the integrator E ot iat -ko6f -ti, where K is a scale factor that takes into account the coefficients of multiplication unit 1, low pass filter 8 and integrator 9; , f) - signals at the third and fourth inputs 12 and 13. For the time t, the first and second switches 2 and 3 connect the signals from the first and second inputs 10 and 11, and the output of the multiplication unit 1 is connected via the third switch k to the input of the low pass 8. The change in the output voltage of the integrator 9 is equal to r & Uq K | x (t} y (t) .t2, de x (t), y (t)) are the signals at the first and second inputs 10 and 11. In the steady state, the total change in the output voltage in9 is zero. At a constant. the period of the line above means the averaging of production over the period. From the expression C) we find, i-h 5 taking into account the expressions (V) and (5) 9 - From the expression (1) it follows that the ignals at the output of the integrator 9 and at the fifth input I must be one nak, and from expression (5) - the restriction in the corresponding equality of knowledge xy and. The output voltage of the integrator 7 of the functional converter of the time intervals 6 is changed according to the sawtooth law and. , B-in Jii UM is the constant of integrator 1 for the resistances of the first and second large-scale resistors 18 and 19 of the voltage of the source of the reference voltage 7. After the comparator 20 has triggered and the first and second switches 21 and 22 are switched, the integrator 1 recharges until the next time the comparator trips 20 and equal to (8) Ri8 UT

From expressions (7) and (8) follows the validity of expressions (1) and more. it can be seen that the ratio of the time intervals does not depend on the resistance values of the first and second scale resistors 18 and 19 and the parameters of the integrator 17. Therefore, expression 6 performs fairly accurately.

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From expressions (8) and (5) you can find

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2- -R ,, - WV4 From the expressions of Sb) and (9), it follows that the proposed multiplier-dividing device is characterized by a new quality compared to the prototype device — the possibility of converting more input signals

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Claims (2)

1. MULTIPLE DIVISION DEVICE, comprising a multiplication unit, the output of which is connected to an inverter input, a low-pass filter connected in series and an integrator, the output of which is the output of the device, the first, second and third switches, the output of the first switch is connected to the first input of the multiplication unit, the second the input of which is connected to the output of the second switch, the first inputs of the first and second switches are respectively the first and second inputs of the device, the third input of which is the second input d of the second switch, the outputs of the multiplication unit and the inverter are respectively connected to the first and: second inputs of the third; a switch the output of which is connected to the input of a low-pass filter, it is important that, in order to expand the scope of application, the device by increasing the number of transformations. Signals while maintaining the accuracy of the work, a functional converter of the ratio of time intervals and a source of reference voltage are introduced into it, and the output of the integrator is connected to the first input of the functional converter of the ratio of time intervals, the output of which is connected to the control inputs of the first, second and third switches, the outputs of the reference source voltages are connected respectively to the second and third inputs of the functional converter of the ratio of time intervals, the second input th switch is the fourth input of the device, which fifth input yav- § wish to set up a fourth inverter input functional relationship of time slots, the output of which is. additional output device. 2. Device pop. 1, characterized in that the functional converter of the ratio of time intervals contains an integrator, first and second switches and a comparator, · the output of the first switch is connected to the input of the integrator, the first input of which is the first input of the functional converter, the output of the integrator through the first scale resistor is connected to the first input of the comparator, the second input of which is connected to the bus of zero potential, the output of the comparator through the second scale resistor is connected to the first input a comparator, the output of which is the output of the functional converter and is connected to the control inputs of the first and second SU ,, „1048488 switches, the first and second inputs of the second switch are respectively the second and third inputs of the functional converter *, the fourth input of which is the second input of the first switch.