SU1458715A1 - Rack for measuring parameters of galvanic integrators - Google Patents

Description

The invention relates to test equipment. The purpose of the invention is the increase in measurement accuracy and reproducibility of results through the use of symmetric balancing

in two

yoke

- 55 ^x / X

8C .... 1458715

1458715

tyakh, exceptions of casual shifts in support and balancing of a yoke with an electric compensator. The stand contains a weight arm rotating on supports, prism suspensions 6, 7 symmetrically arranged on it, limiters of movements of prism suspensions and rocker arms fixed along the axis of rotation of the weight arm, cantilever protruding lodgement 30 for fixing the mandrel 33 with galvanometer integrator 34 and adjustable counterweight 36. The stand also contains a cargo receiving area 12 for mounting ring weights 14 on one of the prism suspensions and a compensator 49 on the other, prednaz

started for balancing rocker arms, an electrical power supply circuit and recording of electrical parameters and an optical unbalance indicator. The compensator is made in the form of two oppositely directed magnets 50, 51 interacting with the coil 52, fed by the compensation current from the electrical signal unit, which is used to judge the moment M * generated by the transfer of the substance in the galvanometric integrator. The power supply of the latter, the registration of the amount of transmitted electricity 0 and the display of the M _x and 0 are carried out by an electrical power supply circuit and the recording of electrical parameters. 1 il.

one

The invention relates to a testing technique and can be used in determining the parameters of galvanometric integrators used in navigation technology.

·; The purpose of the invention is to increase the accuracy of measurement and reproducibility of results due to the use of a symmetric rocker, his own. in two-planes, excluding accidental displacements in the supports and balancing by an electric compensator.

The drawing shows the scheme of the proposed stand.

The stand contains a base 1, supports mounted on it, made in the form of a pillow 2 and a prism 3, a weight arm 4 rotating on supports, made in the form of a blade 5, prism suspensions 6 and 7 symmetrically fixed to the ends of the weight arm 4, made in as end prisms 8 and 9 and films 10 and 11, mounted on a prism suspension 6, the load-receiving platform 12 with slots 13 for installing ring weights 14 with the help of levers 15, cams 16 and control knob 17 with counting limb 18, suspension suspensions made in installed as based on semi-cylinder2

Ditch 19-22, forming semicircular grooves 23, in which the strips 10 and 11 of prism suspensions 6 and 7 are recessed with a gap of d, and the depth dΖ of the immersion of the strips 10 and 11 in the restraints of the movements of the suspensions is greater than the height λ of their rise carried out by -rutting stops 24 and 25, controlled by an arresting mechanism 26 with a control handle 27, a limiter for the movement of the rocker arm 4, made in the form of two C-shaped forks 28 and 29 located at its two ends, fixed along the axis of rotation of the weight arm 4, a cantilever extension lodgement 30, made in e of the pallet with ν-shaped locking grooves 31 for the fixing roller 32 of the mandrel 33 of the galvanometer integrator 34 under study and four support screws 35 with round heads, adjustable counterweight 36, made in the form of a rod 37, moving along it a split nut 38 with a risk of 39 and a scale of 40 , the center of gravity regulator 41, the imbalance indicator 42, made in the form of a flag 43, the illuminator 44, the capacitor 45, the micro-lens 46, the screen 47 and the risks 48, the compensator 49, interacting with the prism suspension 7, made in the form of two 50 aligned magnets and

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51, a coil 52 cooperating with them, and connected to the coil block 52 an electric signal, constructed as a switch 53 null method com- _{5 x} 1 current, a regulator 54, meter 55 and current source 56, and an electric power circuit and recording the electrical parameters, made in the form of a regulated power supply 57, connected through the reference resistor 58, switches 59, current-carrying current leads 60 to the first pole 61 of the galvanometric integrator 34, conversion box 15 62, whose input is connected to the reference resist Oru 58, block 63 integration and registration, the input of which is connected to the output of block 62 conversion, -block 64 20

a time base associated with the integration and recording unit 63 and the measurement and recording unit 65, the first input of which is connected to the current meter 55, and the second to the ²⁵ output of the integration and recording unit 63. The second output of the regulated power supply 57 and the second pole 66 of the galvanometer integrator 34 are connected to the base 1. 30

The stand works as follows.

On the support screws 35 with spherical lugs, the mandrel 33 is installed with the investigated galvanometer- ₃₅ integrator 34, the fixing roller 32 is installed in the ν-shaped fixing grooves 31 of the lodgment 30, the torqueless current leads 60 are installed and the counterweight 36 is adjusted by moving the nut 39 and set on a scale of 40 the unbalancing moment

= Р1₽, where Р - mandrel weight 33 with integrator 34; 1 _p - shoulder of action of weight of R.

I

After that, the weight beam 4 and prism pendants 6 and 7 are lowered using stops 24 and 25 and the locking mechanism 26 and set with prism 3 on the pillow 2, and slats 10 and 11 - onto the terminal prisms 8 and 9,

at the same time, the limiting movement of the suspensions with recesses 23 protects 55 prism suspensions 6 and 7 from slipping. and falls, and the i-shaped forks 28 and 29 of the movement limiter of the weight arm 4 prevent it from accidentally leaving the working contact area

prism 3 with pillow 2.

Further, when the switch 59 is turned off (current 1 „= 0), the weight beam Δ is first balanced by setting (removing) the required number of ring weights 14, and then using the compensator 49.

Then switch 59 is turned on and the required supply current of the galvanometer integrator 34 is set. In the latter, a certain amount of mass is transferred from one pole 61 to another pole 66. At the same time, balance arm 4 is unbalanced by angle δν according to unbalance indicator 42, proportional to the static moment:

M _k = Κ, 4Ψ = 4 = K ₂ / Ι „· ά £, (1)

where § is the acceleration of free fall;

1 _And - the distance between the poles 61 and 66;

K ₁ and K ₂ - scale factors;

DS - the time of passage of current 1 _and .

After a predetermined period of time and with operator performs balancing the weight of the rocker 4 za.schet input compensation current in the coil 1 _TO 52 In the position compensator 49. equilibration (Δ H = 0), the value of the static unbalance moment of the compensation current is proportional _to 1:

М * = К ₃ 1 _к = К, {1 „-4С, (2)

A

where K5 is the scale factor, '1 _K is the compensation current.

From the expressions (1) and (2) determine the magnitude of the scale factor K _{£ of the} investigated galvanometric integrator, which characterizes its quality by the speed of substance transfer in time, i.e. the ratio of the moment of the weight of the mass of the transferred substance to the electric charge H passed through the integrator:

_to _ M * _ ___

2 (} "О ί 1 _And 4С *

Registration of the total amount

substance passing through a galvanometer integrator occurs in

6

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block 63 integration and registration, which receives signals about the current value of current 1 _K (from block 62 conversion) and the current time (from block 64 time base).

Measurement and registration of the moment M _x unbalance, proportional to the current 1 _K compensation, is carried out in the ed measurement and recording unit 65, which receives a signal from the 55 meter current meter 1c. At the same time, the measurement and registration unit 65 receives a signal about the current value of the total ED of the amount of electricity (}, which makes it possible to build the M _x (0) relationship. The dependence is recorded discretely after a specified time interval K, 20

Claims (1)

<claim-text> Formula of Invention </ claim-text> <claim-text> A bench for measuring the parameters of galvanometric integrators, with-25 holding the base, supports installed on it, a weight beam rotating on the supports, an electric power supply and electrical parameter recording circuit, an unbalance indicator, a load receiving platform and a compensator, characterized in that, in order to increase measurement accuracy and reproducibility of results, it is provided with fixed sym </ claim-text> <claim-text> 15 </ claim-text> <claim-text> metrically at the ends of the weight beam prism suspension MIs made in the form of end prisms and strips, one of which is installed with the ability to interact with the receiving platform, and the other with a compensator, fixed along the axis of rotation of the weight beam, cantilever protruding lodgement and adjustable a counterweight made in the form of a rod moving along a split nut with a bar and a scale, and limiters of the movement of prism suspensions and rocker arms, the load receiving platform being designed for Removable ring weights, the compensator is made in the form of two oppositely directed permanent magnets mounted on the second prism suspension, a coil interacting with the magnets, and an electrical signal unit connected to the coil, the limiting movement of the rocker arm is made in the form of two I-shaped forks installed with two of its ends, the restraints of the movements of the prism suspensions are made in the form of four semi-cylinders installed on the basis of which form the grooves, in which slats are placed with a gap, the lodgement ying a pallet with a v-shaped fixing grooves and four support screws with round heads enshrined in the pan. </ claim-text> <table border = "1"> <tr> <td> </ td> <td>