SU516052A1 - Functional converter - Google Patents

Description

one

The invention relates to the field of computing and can be used in the construction of analog and analog-digital computers, as well as for the creation of analog, analog-digital converters and other measuring devices.

A functional converter is known that contains a non-linear unit, the first input of which is connected to the first input of the control unit and the input of the converter, and the output to the first input of the first adder and the second input of the control unit. The outputs of the control unit are connected to the second input of the non-linear unit and the input of the memory unit, the first output of which is connected to the third input of the non-linear unit.

The disadvantages of such a converter include the difficulty in increasing the number of approximation plots, the increase in memory while reducing the error, and limited functionality.

The proposed converter, in order to increase the accuracy and expand the class of reproduced functions, contains an additional nonlinear block, a multiplication unit and a second adder, the inputs of which are connected respectively to the input of the converter and the second output of the memory block. The output of the second adder through an additional non-linear

the unit is connected to the first input of the control unit, the second input of which is connected to the output of the control unit, and the output to the second input of the first sum.mmator.

The converter circuit is shown in the drawing.

The converter contains a non-linear block 1, a control block 2, a first adder 3, a block 4 of memory, an additional non-linear 6vTOK 5, a block 6 of multiplication and a second adder 7.

The device works in the following way.

Nonlinear unit 1 produces a function

P

L F (X) (l-A-J {sign (.v - lL,

where LO is the initial value of the function; , 2, ..., p is the number of the approximation node; s is the tangent of the angle of inclination;

r (h) sign functions (r (h 0 for xl 0

and at). The received signal is applied to the adder 3, where it is summed with the correction function signal y} (x). The accumulator 7 is sequentially received from the memory block of the value of the nodes of the approximation e x2, ..., Xn.

Difference XA; is fed to a nonlinear block 5, which produces a function 0 (x), having the form

/ ih I

Ai / (n, (-p

X (n)

xw-i -1-1),

where X (n x- (n-l) h -x-Xi;

h is the length of the approximation section;

n is the number of approximation sites;

Xi is the next approximation node.

The block 6, controlled by the control block, multiplies Dg /; by a factor of / (-). On the adder 3, the signal and the signal (x) are summed, and the corrected signal y e is formed on its output.

Formula n 3 about b and e and

A functional converter containing a non-linear unit, the first input of which is connected to the first input of the control unit and the converter input, and the output is connected to the nerve input of the first adder and the second input of the control unit, the outputs of which are connected to the second input of the nonlinear unit and the memory block input, first output which is connected to the third input of the nonlinear block, characterized in that, in order to improve the accuracy and expand the class of reproduced functions, it contains

an additional nonlinear unit, a multiplication unit and a second adder, whose inputs are connected respectively to the converter input, and a second output of the memory block, the output of the second adder is connected via an additional pelinar block to the first input of the control unit, the second input of which is connected to the output of the control unit, and the output connected to the second input of the first adder.