SU1359686A1 - Vibrocalibrating device - Google Patents

Abstract

The invention relates to the metro logical technique. The purpose of the invention is to increase the measurement accuracy of the conversion coefficient of the calibrated vibration measuring transducer (VIP) - due to the fact that when measuring the conversion coefficient of the motherboard of its BIP 6, the signals from the matching amplifiers 7 and 8 are fed to the inputs of the comparison circuit 10. In order to obtain at the output of the comparison circuit 10 a signal proportional to the conversion coefficient of the calibrated VJ 6, it performs the mathematical operation of dividing the signals, again. stepping on her entrances. I RSH. SO SD fV

Description

The invention relates to a metrological technique, in particular, to means of determining the frequency of vibration, vibration acceleration and conversion coefficient of vibration measuring transducers, and is an improvement of the invention according to the author. St. No. 1067385.

The purpose of the invention is to improve the accuracy of measuring the conversion coefficient of the calibrated vibration measuring transducer and to ensure the possibility of determining the conversion coefficient at any point of the working range of vibration accelerations.

The drawing shows a structural diagram of a vibratory calibration device.

The vibro-calibration device contains a series-connected master oscillator 1, an amplitude regulator 2, a power amplifier 3 and a vibration exciter 4, on which a model vibration measuring transducer (VIP) 5 and a tunable VIP 6 are installed. The outputs of both VIP devices are connected to matching amplifiers 7 and 8 respectively. The output of the first matching amplifier 7 is connected to the input of the scale amplifier converter 9 and with one input of the comparison circuit 10, the other input of which is connected to the output of the second matching amplifier 8. The outputs of the scale amplifier converter 9 and the comparison circuit 10 are connected to the input of the first switch 11, the output which is connected to the time input of the pulse analog-digital converter 12, the other input of which is connected to a quartz oscillator 13 and a frequency divider 14, the output of which is connected to one input of the circuit 15 coinciding and. Outputs time pulse analog-digital conversion. The bodies 12 and the coincidence circuit 15 are connected to the inputs of the second switch 16, and its output is connected to the series 17 reading unit 17 and the digital indicator 18. The output of the master oscillator 1 is connected to the square pulse former 19, the output of which is connected to the second input of the coincidence circuit 15.

When measuring the conversion coefficient of the tested VS 6 signals

In SHIPI Zack. 6148/45

from the matching amplifiers 7 stz are fed to the inputs of the circuit 10. To obtain at the output cx a comparison of the signal, proportional to the coefficient of the converted VIP, the operation is performed

ten

TO

turn

UPOV iobr.

To arr.

where k

turn

15

20

25

thirty

35

40

TO

arr.

pov

and

arr

the ratio of the direct or the coefficient of the direct of the sample voltage of the output siyu amplify the trusted VIP; the voltage of the exhaust pipe will amplify the ratchet VIP.

The conversion coefficient of the VIP is a post value known in advance; therefore, multiplying by K can be scaled by the method of carrying the stresses U and

makes any known

Claims (1)

providing the required t Formula B images Vibrocamping device autor., No. 1067385, differs from the fact that, in order to measure the conversion accuracy of the measurement measurement transducer, to enable the op conversion factor to the working range point with rhenium}, additionally enter the comparison, the outputs of the first matching amplifiers with corresponding inputs , the output of which is connected by the input of the first switch, the output of which is connected to the time of the pulse-analog converter, and the scale of the converter-converter is input to the output of the first amplifier of the amplifier and you in turn, from the first switch. Circulation 500 Subscription 50 55 Random polygons pr-tie, V, Uzhgorod, st. Project; four from matching amplifiers 7 and 8, connect to the inputs of the comparison circuit 10. In order to obtain at the output of the comparison circuit 10 a signal proportional to the conversion ratio of the calibrated VIP 6, the mathematical operation is completed TO turn UPOV iobr. To arr. where k turn five 0 TO arr. pov and arr conversion factor of the verified VIP; conversion rate of the sample VIP; output voltage of the matching amplifier of the veritable VIP; output voltage of the booster amplifier of the mapping VIP. 8 assist- 7 for The conversion rate of a sample VIP is constant and known in advance, so the multiplication operation by K can be selected by the scaling method. The ratio of the voltages U and U oprepov arr. , done by any known method providing the required accuracy. Formula images bvt e n i Vibrocabibrating device according to av. No. 1067385, characterized in that, in order to improve the measurement accuracy of the conversion coefficient of the vibrometer converter being tested and to make it possible to determine the conversion coefficient at any point of the working range of vibration eques, the first comparison circuit was introduced and the second matching amplifiers are connected to the corresponding inputs of the comparison circuit, the output of which is connected to the second input of the first switch, the output of which is connected to By the course of time, the pulse analog-digital converter, and the large-scale amplifier-converter, with an input connected to the output of the first matching amplifier and output, with the first input of the first switch. Circulation 500 Subscription