The device for determination module of the second orthogonal component of the vector

 

(57) Abstract:

The invention relates to the field of computer engineering and can be used in a hybrid analog-digital circuits and systems analog signal processing to determine the module of the second orthogonal component, known modules of the vector and its first orthogonal component. The purpose of the invention is the simplification of the device and increase its accuracy. The device contains an analog-to-digital Converter 2, d / a converters 3, 7, 11, the adder 4, the generator 5 of the sine wave, the phase-shifting unit 6, the zero-body 8, the And gate 9, the counter 10, the Converter 12 AC voltage to DC, the comparator 13, the source 15 of the reference voltage. 1 C.p. f-crystals, 4 Il.

The invention relates to the field of computer engineering and can be used in a hybrid analog-digital circuits and systems analog signal processing order determining module of the second orthogonal component, known modules of the vector and its first orthogonal component.

The closest technical solution to the present invention is a device for determining the orthogonal component of the vector, the content is.

The prototype disadvantages are the complexity of the scheme and of low accuracy.

Solved by the invention technical problem simplification of the device and increase its accuracy.

This problem is solved due to the fact that the device for determining the orthogonal component of the vector containing the counter, the adder and the comparator inputs of the phase-shifting unit, the inverter AC voltage to a constant, null-body element, And a voltage reference, analog-to-digital Converter, three digital-to-analogue Converter and a generator of sinusoidal voltage, the output of which is connected to the input of the reference voltage of the first digital to analogue Converter and through the phase-shifting unit to the input reference voltage of the second digital to analog Converter and to the input of the zero-body inverted output of which is connected to the first input element And the output of which is connected to the clock input of the counter, the output of which is connected to the digital inputs of the second and third digital to analog converters whose output is the output device, the output voltage reference is connected to the input of the reference voltage of the third d / preobresti, and the output is connected to the digital input of the first d / a Converter, the outputs of the first and second digital to analog converters are connected to the inputs of the adder, the output of which is connected to the input of the inverter AC voltage to DC, the reset input of which is connected to the input of the reset of the counter and starting with the input device, the output of the inverter AC voltage to DC and second input devices are connected respectively to the inverting and not inverting inputs of the comparator, the output of which is connected with the second input element And the inverter AC voltage to DC contains a switch, a diode, a capacitor and a resistor, and the anode of the diode is the input of the Converter and the cathode, which output is connected to the information input of the switch and through the condenser is connected to the bus zero potential, is connected through a resistor to the output of the switch, a control input connected to the reset input of the Converter.

In Fig. 1 presents a diagram of the device of Fig. 2 is a diagram of an AC-to-DC, Fig. 3 illustrating a vector diagram of voltages, and Fig. 4 illustre is a device (Fig. 1) contains the first input 1 x device connected to the information input of the analog-to-digital Converter (ADC) 2, the information output of which is connected to the digital input of the first digital to analogue Converter (DAC) 3, the output of which is connected to the first input of the adder 4, and the input reference voltage is connected to the output of the generator 5 sinusoidal voltage (GOS) which is connected to the input of the phase-shifting block (FSB) 6, the output of which is connected to the input of the reference voltage of the second DAC 7 and the input of the zero-body 8, the inverse output of which through the element And 9 is connected to a clock input of the counter 10, the output of which is connected to digital inputs of the third 11 and 7 second DAC, the output of which is connected to the second input of the adder 4, the output of which through the transducer 12 AC voltage to DC (PNP) connected to the inverting input of the comparator 13, the non-inverting input of which is connected to a second input 14 z device, and the output connected to the second input element And 9, the source 15 of the reference voltage (ION), the output of which is connected to the input of the reference voltage of the ADC 2 and the third DAC 11, the output of which is an output device 16, a trigger input device 17 is connected to the input of the reset of the counter and the entrance sbro, and the cathode, which is the output PNP 12 and through a capacitor 19 connected with a common bus device connected to the information input of the switch 20, a control input connected to the reset input PNP 12, and the output across the resistor 21 is connected to a shared bus device.

Consider the operation of the device.

For easy operation, setup and testing of the device are identical to the ADC 2 and DAC 3, 7, 11, have the same operating range and the width of the lower significant digit U Generator 5 produces sinusoidal oscillations of fixed frequency, peak value which is equal to the width of the operating range of the input voltage of the ADC 2. With the FSB 6 is achieved by the shift of these fluctuations on the angle = -90. PNP 12 converts AC voltage to DC equal to the amplitude value of the input voltage, i.e.

Information ADC input 2 is applied a constant voltage x. Code on the digital output of the ADC 2 is equal to

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Code K2is fed to the digital input of the first DAC 3, to the input of the reference voltage which is applied sinusoidal voltage output from the GOS 5. As a result, the output of the first DAC 3 is sinusoida to the first input of the adder 4.

Chain jobs voltage starts to work after the onset of the trigger input 17 of a single pulse (at time t 0 in Fig. 4). This pulse clears the contents of the counter 10 and opens the switch 20 PNP 12 - capacitor 19 is discharged through the resistor 21, and the output voltage PNP 12 drops to zero. As to the direct input of the comparator 13 is applied a constant positive voltage z > 0, and the inverse of the zero output PNP 12, the output of the comparator 13 appears a single voltage. This voltage is applied to the second input element And 9, which begins to pass pulses from the output of the zero-body 8 to the input of counter 10. On the interval t0t1the contents of the counter 10 is zero and accordingly the output voltage of the DAC 7, imitating second defined orthogonal component of the vector is also zero. Therefore, on the interval t0t1the output voltage of the adder 4 is equal to (see Fig. 3)

< / BR>
On the interval t0t1capacitor 19 is charged through the diode 18 in the curve of the voltage U12in this interval repeats the curve of the voltage U4(see Fig. 4).

At time t1in Fig. 4 sine wave voltage U7(see Fig. 4), the effective value of which is equal to

< / BR>
Given that the stress applied from the output of the FSB 6 to the input reference voltage of the second DAC 7, lagging the voltage GOS 5 90othe voltage lagging the voltage by 90o(see Fig. 3 and 4).

The output voltage of the adder 4 time t1is

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The module of the resultant vector is equal to (see Fig. 3)

< / BR>
Using PNP 12 AC voltage is converted to DC voltage

< / BR>
Since the amplitude of the voltage more voltage amplitude (see Fig. 3), then after time t1is the recharging of the capacitor 19 by a small amount to the level of the voltage amplitude , which then begins to decline (see voltage U4in Fig. 4). However, the diode 18 prevents the discharge of capacitor 19 as a result, the time interval t1t2output voltage Pnina there is a single voltage. Therefore, at time t2in Fig. 4 again actuates the counter 10, and its output code is set to 0010, and the output voltage of DAC 7 takes the value

< / BR>
Accordingly, the output voltage PNP 12 becomes equal (with some delay after the time t2)

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and maintained at this level until t3.

Finally, at time t3the contents of the counter 10 becomes equal to 0011, and the output voltage of DAC 7 reaches a value of

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Output voltage PNP 12 is achieved values (at time t4)

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In the alignment of the input voltages of the comparator 13 releases, its output voltage drops to zero (at time t4covering element And 9 for the passage of pulses from the output of the zero-body 8. Further, the content of the counter 10 is not changed, and DAC output 11 from this point on there is constant DC voltage

< / BR>
Advantages of the proposed device in comparison with the known are simpler scheme and higher accuracy. The circuit device is implemented on integrated circuits.

1. The device for determination module of the second orthogonal component of the century the educational AC voltage to DC, zero-organ element, And a voltage reference, analog-to-digital Converter, three digital-to-analogue Converter and a generator of sinusoidal voltage, the output of which is connected to the input of the reference voltage of the first digital to analogue Converter and through the phase-shifting unit to the input reference voltage of the second digital to analog Converter and to the input of the zero-body inverted output of which is connected to the first input element And the output of which is connected to the clock input of the counter, the output of which is connected to the digital inputs of the second and third digital to analog converters whose output is the output device, the output of the voltage reference is connected to the input of the reference voltage of the third digital to analog Converter and analog-to-digital Converter, an information input which is the first input device and the output is connected to the digital input of the first d / a Converter, the outputs of the first and second digital to analog converters are connected to the inputs of the adder, the output of which is connected to the input of the inverter AC voltage to DC, the reset input of which is connected to the input of the reset of the counter and with the starting I the ENES respectively to the inverting and not inverting inputs of the comparator, the output of which is connected with the second input element And.

2. The device under item 1, characterized in that the inverter AC voltage to DC contains a switch, a diode, a capacitor and a resistor, and the anode of the diode is input to the Converter, and the cathode is the output of the inverter connected to the information input of the switch and through the condenser is connected to the bus zero potential, is connected through a resistor to the output of the switch, a control input connected to the reset input of the Converter.

 

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