SU960883A1 - Converter of shaft rotation angle to code - Google Patents

Description

(5) CONVERTER ANGLE OF TURNING SHAFT INTO CODE

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The invention relates to automation and computing vi can be used to connect analog information sources with a digital computing device.

Converters of the angle of the shaft turning into a code are known, the coarse readout (go) and accurate readout (TO) of which are performed in a cyclic code and connected to blocks of converting a cyclic code to arithmetic, whose outputs are connected to the block of matching the counts 1.

The disadvantage of such converters is the introduction of an additional matching bit of GO, which increases its size.

Transducers are also known to contain additional sensitive elements in GO, not in le to match readouts of 2%.

The disadvantage of these converters is their complexity.

The closest technical solution to the invention is a shaft rotation angle converter into a code containing a TO channel, an average reference code element (CO), a U-code to arithmetic conversion unit, the first input of which is connected to the cTapmeNiy discharge of the TO channel, the GO channel connected to the same inputs of the unit matching GO and CO. Other inputs of the Y-code to arithmetic conversion unit are connected to the code element CO C.

A disadvantage of the known converter is the difficulty of performing the CO code element.

The aim of the invention is to simplify the converter.

Claims (3)

The goal is achieved by the fact that in the converter of the angle of rotation of the shaft into a code containing a precision reference channel, a code element of an average reference, a conversion unit, a U-code and an arithmetic, the first input of which is connected to the highest bit of a heavy reference channel, a coarse reference channel, connected to the same inputs of the matching unit, coarse and medium samples, the switch and the cyclic code conversion unit a are arithmetic, and the average count code element is executed in the cyclic code, the code element outputs The middle count through the switch, the control inputs of which are connected to the coarse count channel outputs, are connected to the second inputs of the V-code to arithmetic conversion unit and to one inputs of the cyclic-to-arithmetic conversion unit, whose outputs are connected to the third inputs of the V-code conversion unit to the arithmetic, the LEIT of the lower bit of the coarse reference channel is connected to another input of the cyclic code conversion unit in the arithmetic unit and to the fourth input of the V-code unit to the arithmetic unit, The output of the higher bit is connected to another input of the coarse and medium count matching unit. The drawing shows a block diagram of the converter. The converter contains a precise reference channel 1, a code element 2 of a medium reference channel, connected through a switch 3 to a cyclic code conversion unit and an arithmetic unit 5 to convert a V code to an arithmetic unit, the second input of which is connected to the higher bit channel 1, channel 6 coarse counting, the outputs of which are connected to the control inputs of the switch 3 and to the same inputs of the block 7 matching coarse and medium samples, the other input of which is connected to the output of the high bit of the block 5. The outputs of the C block are connected to tim input unit 5, and the output of the least significant bit channel 6 is connected to the other input of block k and fourth input unit 5. The unit consists of a half-adder k 8 included in each discharge than younger. One input of half accumulator 8 is connected to the output of the corresponding discharge of switch 3, and the other with the output of half accumulator of the next most significant bit. Block 5 consists of matching 9 cells included in each discharge. Each of 96 4 ec 9 consists of an inverter, two AND elements and an OR element. The Converter operates as follows. Channel 1 accurate reading generates a complete code when turning code element 2 on one quantum. Block k converts the output cyclic code of element 2 into arithmetic. The inputs of block 5 receive codes that are displaced in space similar to the V-code. From these CODES; block 5 forms an arithmetic code. To form the low bit of the output code of block 5, the high bit of channel 1 of the exact count is used, and to form the high bit of the output code of blocks 4 and 5, the low bit value of the output code of channel 6 is used. Coordination of GO and CO codes is performed in block 7. At the same time, coarse-reading channel 6 can be built on the basis of the double-brush, Y-sweep method, with additional matching bits or similarly to the middle channel. Using the output signals of channel 6, the switch 3 is controlled so that within the full revolution of code element 2, the outputs of the switch 3 are formed of si-channels with the same weight, and ambiguity is eliminated by the code of the lower bits of channel 6. The use of the converter allows using We can (or coarsely) read one sensor element per bit without introducing additional matching bits, which simplifies the converter. The invention The converter of shaft rotation angle into a code containing a precision reference channel, a middle count code element, a V-code to an arithmetic conversion unit, the first input of which is connected to the highest bit of the precision reference channel, a rough reference channel connected to the same inputs of the coarse matching unit. and average samples, characterized in that, in order to simplify the converter, a switch and a unit for converting a cyclic code into an arithmetic code are introduced into it, and the code element of an average reference is made in In the cyclic code, the outputs of the code element of the middle reference through the switch, the control inputs of which are connected to the outputs of the coarse reference channel, are connected to the second inputs of the V-code to arithmetic conversion unit and to the single inputs of the cyclic code to arithmetic conversion unit, the outputs of which are connected to the third inputs V-code to arithmetic conversion unit, the output of the low-order bit of the coarse reference channel is connected to another input of the cyclic code to the arithmetic conversion unit and the fourth input of the b eye conversion V-KO: yes in arithmetic, the most significant bit output of which is connected to the other input matching block coarse and medium samples. Sources of information taken into account in the examination t. USSR author's certificate N 165588, cl. G 08 C 9/00, 19bЗ. 2. Authors certificate of the USSR N Z778 0, kp. G 08 C 9/00, 1969. 3. Author's certificate of the USSR (G, class G 08 C 9/0, 1970 (prototype).