SU364098A1 - UNION-UNIFIED PET:; Ytno "| 1Х1и {^ :: H ^^ f - Google Patents

Description

This invention relates to the field of radar.

An angle-code converter containing a code-variable voltage transducer, syn1; blue-kos, a null rotary transformer, an octant switch, whose input is connected through the control register to the output of the circuit circuit, another output of the morning-to-left switch, is known It is connected to the input of the correction control unit and to the input of the converter code-1 conductivity.

The purpose of the invention is to increase the accuracy and reliability of the angle-code converter.

D. This first output switch octants through the converter "code-over voltage is connected to the first input of the comparison circuit, and the second output of the switch of octa-ntov is connected to the second input of the comparison circuit and to the output of the converter" CODE-PR OVS1DI.

The drawing is a block diagram of the proposed Converter.

The output signals of the sine-cosine rotary transformer (SCWT) 1 are connected to a switch of 2 octants, one of the outputs of which is connected to the input of the comparison circuit 3, and the other is connected to the input of the linear code-variable voltage (PCN) 4.

The output of the comparison circuit 5 is connected to the input of the control register 5. the outputs of which are connected to the inputs of the switch 2 octants, PKN 4, the correction control block 6, the adder 7 and the 8 "code- converter

conductivity

The output of the correction control block 6 is connected to the input I cc: M1 of the math 7. The output of the 8 "code-conductivity converter is connected to the input of the comparison circuit 3 in parallel

You switch 2 octants at a time.

The proposed Converter works as follows.

When the rotor rotates the CKBT-I, which is powered by the voltage U ch., By an angle

its output windings are removed by two voltages proportional to the sine and cosine of the angle a. These voltages, through a switch of 2 octants in the first two cycles of operation, are fed to the input of the comparison circuit 3 for determining the phase fl): x voltages relative to Unn. In the third cycle, the ratio is determined by the absolute value between the voltages of the sinus and cosine windings of ACS 1 by means of (D1 connection of the latter to the various inputs of the comparison circuit 3.

Thus, in the first three cycles, the O-360 ° angle is divided into sectors equal to 45 ° (octants), each of which corresponds to a three-digit binary code.

According to the results of the octant coding

the smaller of the output voltages of the ACS 1 using the switch 2 octaitos, controlled by the control register 5, is connected to the input of the circuit. We have 3 comparisons, and the larger one is supplied as a reference to the input of the PCN 4.

Further coding | yn. Is carried out by the method of Diff. Wherein. Pa of each of the (subsequent cycles, the output signal from the comparison circuit 3 is 1 if the load from the output of the PCN 4 is less than the voltage on the SCWT winding / directly connected to the input of the comparison circuit 3. On the output signal of the comparison circuit 3 The control register 5 records the e1Dynity. The absence of the output signal from the comparison circuit 3 corresponds to the zero entry in the register control register 5.

As a result of the linear coding, a code is obtained (proportional to the ratio between the voltages on the sinus and cosine windings of SCPT. Thus, the code recorded in control register 5, except for three high-order bits, is proportional to the rotor rotation frequency; in diapaso, on 0 -45 °; 135-180 °; 180-225 °; 315-360 ° and the cotangent in the ranges 45-135 °; 225-270 °; 270-315 °. The operation of the correction control unit 6 is reduced to decoding the state of the register 5 and the development of a code for rectification.

The addition of the polravka code to the code obtained at the end of the Coding in register 5 is carried out in the adder 7, the inputs of which are simultaneously received from the code from the control register 5 and the correction control unit 6.

The output code, the protortional angle of rotation of the rotor of the SCWT /, enters the circuit from the three most significant bits of the register 5 of the control from the output of the calculator 7.

To compensate for the variable input resistance, PKN 4 uses a code-to-conductance converter 8 consisting of a set of conductivities and a logic circuit controlling the connection of these conductors to the output of the switch 2 octaites. Since each code value in register 5 corresponds to the determined value of the input conductance PKN 4, the conductances of converter 5 are switched in such a way that their total value is equal to the input conductance of PKN 4 at this time point.

The structure of the proposed converter allows it to be built entirely on the elements operating in the key mode, which significantly increases its operational reliability. The converter can be made on domestic micro elements.

Subject invention

Angle-code converter containing a code-variable voltage converter, a sine-cosine rotary transformer, an octant switch, whose input is connected through a control register to the output of the comparison circuit, another output of the control register is connected to the input of the correction control unit and to the input of the converter code-conduction, characterized in that, in order to increase accuracy and reliability, the first output of the switch octaps through the converter "code-variable voltage is connected to the first input of the circuit comparison, the second output of the switch octants is connected to the second input of the comparison circuit and to the output of the code-conduction converter.