SU1200283A1 - Device for calculating values of function y- arctg (x) - Google Patents

Abstract

A device for calculating the function I) arct) f containing a pulse subtractor, the first and second counters, the device input being connected to the counting input of the first counter and the first input of the pulse subtractor, characterized in that, in order to improve the accuracy, a combination multiplier and accumulating adder, the transfer output of which is connected to the second input of the pulse subtractor, the output of which is connected to the counting input of the second counter and the clock input of the accumulating adder, whose information input with It is connected with the output of a combinational multiplier, with 9 the first and second inputs of which are soybeans (Linena with the output of the first counter.

Description

U

12

1f

YU -

00

T

h n

The device relates to computing and automation and can be used in systems of automatic control and monitoring.

The purpose of the invention is to increase accuracy.

FIG. 1 shows a block diagram of the device) in FIG. 2 - time diagram of the device. ; The device contains an input 1, a roll-over adder 2, a combination multiplier 3, a pulse subtractor 4, inputs 5 of a multiplier, counters 6 and 7. A pulse subtractor 4 contains an element ШШ 8 with inputs 9 and 10 and output 11, trigger 12 with inputs 13 and 14.

The device works as follows.

Input pulse X, input 1,

200283 2

generates in code 6 the value of the code X, which causes the accumulative adder 2 of the current value X to appear at the control input. 5 An accumulator 2 is used as a controlled frequency divider whose operation is described by

by expression

j ,.

It is seen that the current value of the number in the counter 7

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about

de k

2:

one /

o - increment at the input of the counter 7.f

C3 (j is the increment at the output of the accumulating adder 2 {and is the size of the adder 2.

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Claims (1)

DEVICE FOR CALCULATING THE FUNCTION tj = arctj £ X, containing a pulse subtractor, the first SU, “. 1200283 h is the second counter, and the input of the device is connected to the counting input of the first counter and the first input of the pulse subtracter, characterized in that, in order to improve accuracy, a combination multiplier and accumulating adder are introduced into it, the transfer output of which is connected to the second input pulse subtractor, the output of which is connected to the counting input of the second counter and the clock input of the accumulating adder, the information input of which is connected to the output of the Raman multiplier, the first and second inputs of which are ineny with the output of the first counter.