SU1434459A1 - Sine-cosine converter - Google Patents

Abstract

The invention relates to analog computing and can be used in specialized devices of information and measurement techniques and automatic control systems as a device for linearizing sensors and preprocessing measurement information. The purpose of the invention is to simplify the converter. The sine-cosine converter contains the first to the third multipliers 1-3, the first to the third adders 4-6, the inputs and outputs. 1 il.

Description

9

about

7 ./08 xTfO .f

four

WITH

SP

;about

ten

-about

l l:

The invention relates to analog computing and can be used in specialized devices of information-measuring equipment and automatic control systems as a device for linearizing scans of sensors and preprocessing measuring information.

The purpose of the invention is to simplify the converter.

The drawing shows the functional diagram of the Converter.

1,57394-x - 0.3b119-x - 0.21265 X 1 - 0.20966.x + O, 20966-x

J, 0001-0.2 - 0.99914 x 0.21265-x 1 - 0.20966 X + 0.20966 x i

These dependencies are reproduced in the converter structurally. For example

c) (, g

AO + A, CVU., + A.i.UBx.,

Be + in, and „., + B.ui,.,

and,

Co + C, U

BX.I

+ CiU

6.4 C, + B, Uex.,.

+ C,

de AO

A

Aa az

In

B, Bj

With

C, Sa

ABOUT .

K5, Kb, +

Kfej K. K

-

one;

KschK; to,

- (k, + Ki))

 2, -К42К55

35

40

K5, K

   K „-Kj, K ,,

TO

J i

+ To gKugKbe.

K5eKba +

45

- the weight coefficient of the 1st sunmator on the input. The methodological error of the approximation of the trigonometric functions JQ of the cosine and cosine in the specified range of variation of the argument does not exceed 0.01%. formula of invention

55

A sine-cosine converter containing the first and second adders, the first inputs of which are connected to the transformation scale bus,.

The sine-cosine transducer contains the first through third multipliers 1-3, from first to. the third adders 4-6, the input 7 sets the transformation argument, the bus 8 sets the conversion scale, si-Hycbrt output 9 and the cosine output 10.

The converter works as follows

The operation of the device is based on the following approximating equivalences, which are valid for O 1 x 1 1:

(one)

Target converter output tires are:

., + B.ui,.,

+ CiU

x.,.

+ C, U3 ..,

the output of the first adder is connected to the second input of the second adder and the first input of the first multiplier; the input of the converter argument is connected to the first inputs of the second and third multipliers and connected to the second input of the first multiplier; the output of the second adder, which is the cosine output of the converter, is connected to the first input of the third an adder, the output of which is connected to the second input of the second multiplier, the output of which, which is the sine output of the converter, is connected to the second inputs of the first and retego adders output of the first multiplier connected to a third input of the first adder, the first input of which is coupled to a second input of the third multiplier, whose output is connected to a third input of the third adder.

characterized in that.

for the sake of simplicity, in it the output of the first multiplier is connected to the third input of the second adder.

Claims (1)

Claim FROM A sine-cosine converter containing the first and second adders, the first inputs of which are connected to the bus for setting the scale of conversion, I the output of the first adder is connected to the second input of the second adder and the first input of the first multiplier, the input of the job argument of the converter is connected to the first inputs of the second and third multipliers and connected to the second input of the first multiplier, the output of the second adder, which is the cosine output of the converter, is connected to the first input of the third the adder, the output of which is connected to the second input of the second multiplier, the output of which, which is the sinus output of the converter, is connected to the second inputs of the first and of the adders, the output of the first multiplier is connected to the third input of the first adder, the first input of which is connected to the second input of the third multiplier, the output of which is connected to the third input of the third adder, characterized in that, for simplicity, the output of the first multiplier in it is connected to the third input second adder.