SU1327287A1 - Synchronizing device - Google Patents

Abstract

Invention m. used in reference oscillation extraction systems. The purpose of the invention is to increase the speed at a discrete-varying frequency of the input signal. The device contains a tunable generator 1, a phase detector 2, a differentiating unit 3, a driver (F) 4 of the counting signal, a reversible counter 5, a converter 6, a digital analogue, an adder 7, a controlled band-pass filter 8, an ADC 9, a pulse generator 10, F II, el-12 delay, F 13 blocking pulses, 14 low-pass filter. A DC amplifier 15, a proportional integrating filter 16, an adder 17, a code transmitting unit 18, a drive-converter 19 are inputted into the device. The generator 10 can be synchronized from an external device and can be disconnected transition process. 1 il. (L S Ё 1v / «-and 1 I; M1} H I I oo y t5 about -si gz / JH-M f1

Description

The invention relates to radio engineering and can be used in reference oscillation separation systems.

The purpose of the invention is to increase the speed at a discrete-varying frequency of the input signal.

The drawing shows a structural electrical circuit of a synchronization device.

The device contains a tunable generator 1, a phase detector 2, a differentiating unit 3, a shaper 4 of the signal of the counting direction (FTS), a reversible counter 5, a converter 6 digit-analogue (OCA), the first adder 7, a controlled band-pass filter 8 (UFR), analog -digital converter 9 (ADC), 10 pulse generator, driver 11, delay element 12, blocking pulse generator 13 (FBI), low-pass filter 14 (LPF), direct current amplifier 15 (UFD), proportional-integrating filter 16 (UIF), W-25 tor 17 to the control input perester35

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swarm adder 7, block 8 code transfer (MIC), drive-converter 19,

The device works as follows, 20

When the carrier frequency of the input signal changes, the output of the phase detector 2 has beats with differential frequency, which in the differentiating unit 3 and the FTS are converted into pulses arriving at the corresponding input of the reversible counter 5. The change in the course of the reversible counter 5 decreases the frequency difference between the compared ones in the phase detector by circuit signals: the first adder 7, the low pass filter 14, the second adder 17, the control input of the tunable generator 1. The variable code at the output of the reversing center This 5, converted to OCA 6, is fed to the first input of the first adder and from its output to the UPF 8 input. When the next pulse arrives from the second output of the 10 FBI generator. 13 permits the passage of a varying signal from the output of the PFC 8 to the input of P1 9. After the end of the pulse in the FWI, the PF 8 closes and the signal to its output does not pass. The end of the pulse in the generator 10 corresponds to the formation of a pulse in the driver 11, which is fed to the enable input

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generator and reduces the error in the device to the value of the holding band of the exact frequency control channel containing the FBD 15 and UIF 16 Next, the device adjusts the frequency of the tunable oscillator 1 with phase accuracy, as in a conventional phase synchronization system. The process voltage in the device, which is fed to the input of the A / D converter 9 at the time of opening the UFR 8, is zero, so the contents of the converter drive do not change in the future. The generator 10 may be synchronized from an external device, and may be turned off after the end of the transient process in the device.

Claims (1)

Invention Formula A synchronization device containing a tunable generator connected in series, a phase detector, whose second input is a synchronization device input, a differentiation unit, a counting signal generator, a reversible counter, a digit converter — an analog f — the first adder, a controlled band-pass filter and an analog-to-digital converter , as well as series-connected pulse transducer in A1SC 9 and delay element 12, At the moment of termination of the pulse in generator 10 at the input of ADC 9, for example voltage corresponds to the frequency error between the compared signals in the phase detector 2 This voltage is converted to a digital code and MIC 18 via at receipt at its input the resolution of the pulse from the output of the delay element 12, is transmitted to the drive-converter 19. In the drive-converter 19, the output information of the military industrial complex 18 is summed up with the contents of the accumulator and the subsequent conversion of the result of the summation into an analog signal received at the third input of the second adder 17, and then at the control input tunable oscillator 1, Analog signal at the output of the converter-accumulator 13, proportional to the frequency error in the synchronization system, is received through the second sum35 40 20 45 0 five generator and reduces the error in the device to the value of the holding band of the exact frequency control channel, containing the DCF 15 and the UIF 16. Next, the device adjusts the frequency of the tunable oscillator 1 with phase accuracy, as in a conventional phase synchronization system. The transient process in the device, the alternating voltage entering the input of the A / D converter 9 at the time of the opening of the UFR 8, is zero, therefore the contents of the converter converter are not changed in the future. The generator 10 may be synchronized from an external device, and may be turned off after the end of the transient process in the device. Invention Formula A synchronization device containing a tunable generator connected in series, a phase detector, whose second input is a synchronization device input, a differentiation unit, a counting signal generator, a reversible counter, a digit converter — an analog f — the first adder, a controlled band-pass filter and an analog-to-digital converter as well as series-connected pulse generator, driver and delay element, the driver output also being connected to the analog resolution input a digital converter, a blocking pulse generator, the output of which is connected to the control input of the controlled bandpass filter, and the input is connected to the inverse output of the impulse generator, and a low-pass filter, the input of which is connected to the output of the first adder, characterized in that In order to increase speed at a discrete-varying frequency of the input signal, serially connected constant amplifier is connected between the output of the phase detector and the control input of the tunable generator current, a proportional integrating filter and a second adder, the second input of the adder is connected to the output of the low-pass filter, and between the output of the analog-digital converter and the third input of the adder are connected in series a code transmission unit and a drive-converter, while the output of the delay element is connected to the resolution input of the code transmission unit, the second input of the second adder is connected to the output of the phase detector.