SU454574A1 - The way to convert the angle in the code - Google Patents

Description

one

The invention relates to automation and computing, namely to analog-to-digital converters, and can be used in automatic control systems with digital information processing.

A known method for converting an angle into a code, based on converting an angle into a phase shift between the reference and output voltages, which is converted into the time interval between the zero transitions of the reference and output voltages, is filled with its reference frequency pulses and by counting the reference frequency pulses the code equivalent of the coarse angle is determined.

The purpose of the invention is to increase the conversion speed.

To do this, additional high-frequency reference pulses are produced, a multiple of the reference voltage frequency, the time interval between the phase pulse and the additional additional frequency pulse is separated, which is filled with additional reference frequency pulses, counted, and a code equivalent of the exact reference angle is generated, which is summed up with the code equivalent angle of rough reference.

The drawing shows the block diagram of the device, carried out us, its this method.

The device contains a block 1 formation

sinusoidal voltage and power supply; phase gap; actor 2. Output phase shifter, atel is connected to the input of a phase former 3 phase pulses, the output of which is connected to a single trigger input 4. N the left trigger input is connected to the output of a scaling circuit 5, whose input is connected to the generator output 6. A single trigger output is connected to the first inputs of the two “And 7 and 8” circuits. The second

the input of the circuit “And 7 is connected to the output of the generator 6, and the output is connected to the input of the adder 9. The second input of the circuit“ And 8 is connected to the output of the counting circuit 5 and the input of the counter 10, and the output is connected to the input of the matrix

11 constants, the remaining inputs of which are connected to the outputs of the counter 10. The outputs of the matrix of constants are connected to the inputs of the adder 9. The device for drying the proposed method of converting the angle to code works as follows.

The sinusoidal voltage shaping unit 1 generates a frequency reference voltage f for powering the phase shifter 2. The output voltage of the frequency frequency shifter f, the phase of which is proportional to the angle of rotation of the phase shifter axis, enters the input of the phase pulse generator 3, which also generates phase pulses of frequency. Phase

of these pulses is proportional to the angle of rotation

the axis of the phase shifter 2. The generator 6 generates pulses of an additional reference frequency, which are fed to the input of the scaling circuit 5. The scaling circuit produces reference pulses of increased frequency nf, which are fed to the zero input of the trigger 4, to the second input of the circuit “And 8 and the pa input of the counter 10 The trigger generates a temporary pnterz.:: E) kdu f; 3ov1z1m -r-, t: 1ul; Som and the first higher-frequency reference impulse arriving at the zero input of the trigger. During this time interval, the circuit “And 7 sends to the input of the adder 9 impulses of the additional reference frequency of the generator 6. The adder adds these pulses and forms the code equivalent of the exact reference angle. The counter 10 counts the reference pulses of an increased frequency nf modulo p. Scheme “1-1 8 transmits only the first reference pulse of an increased frequency, following the phase pulse, to the input of the matrix 11 of constants. The matrix of constants, depending on the state of the counter 10, forms the code equivalent of the coarse angle, and the adder 9 summarizes the code equivalent of the exact reference angle and the code equivalent of the coarse angle

four

countdown. As a result of the summation in the adder, the full code of the angle of rotation of the axis of the phase pass, atel 2, is formed.

5 of the invention

A method of converting an angle into a code based on not converting an angle into a phase shift between the reference and output lines, which is converted into a time interval

0 between the moments of non-transition through zero of the reference and output voltages, is filled with its reference frequency pulses and by counting the reference frequency pulses the code equivalent of the coarse angle is determined,

5 is distinguished by the fact that, in order to increase the conversion speed, additional reference pulses of increased frequency, multiple to the frequency of the reference voltage, are additionally produced, the time interval between the phase pulse and the additional additional frequency pulse, which are filled with additional reference frequency pulses, is counted and produce a code equivalent of the reference angle, which is summed up with the code equivalent of the coarse angle.