SU696389A2 - Phase regulator - Google Patents

Description

one

The invention relates to a measurement technique and can be used to convert linear displacements into an electrical signal.

According to the main auth. No. 145932 a phase-adjusting device is known, which contains the primary winding located on it, which encloses the screw, the sleeve and the secondary winding 1 placed on it.

A disadvantage of the known device is the low accuracy of measuring linear displacements due to the accumulated faults of fabrication and aging of screws.

I The aim of the invention is to improve the measurement accuracy due to the possibility of eliminating the accumulated errors of manufacturing and aging screws.

This is achieved by the fact that the screw of the device is made hollow with an internal thread at one end, and the device is equipped with a nut with a screw and an external thread of different pitch installed inside the screw, and with a rebar, oh;

(With screw and the other end screwed into the nut.

FIG. 1 depicts phase control; device; in fig. 2 - accumulated error traffic.

The device consists of a double-threaded screw 1, a sleeve 2, moving one relative to the other along the axis 0-0. On screw 1, there is a bifil of primary winding 3, the turns of which form a spiral helix with pitch S.

The screw 1 is made hollow with internal thread with a pitch Si at one end. The screw 4 is screwed into the inside of the screw 1 with an external thread of pitch S, an internal screw Sj and threaded

5 rod 5, one end rigidly connected to the screw 1, and the other screwed into the nut 4.

On the hub 2 there is a secondary winding consisting of two parts 6 and 7, the turns of which pass along a helix of the same

0 step S, as the coils of the primary winding.

Claims (1)

Both parts 6 and 7 of the winding have the same number of turns and are connected in series to form a closed secondary circuit with active coupling R and con3 capacitor C. The mutual arrangement of the secondary windings is chosen so that the axial distance between their two arbitrary turns is equal to -f- (n + 0.3), where n is any integer odd number, 0.3 is an additional shift and third suppression harmonics. The device works as follows. The primary winding laid on screw 1 is supplied with a sinusoidal voltage Ui Uosin cjt. The secondary winding in the sleeve 2 removes the voltage Ui k-Uo s1n (a) t + p), where k is the coefficient of proportionality; (p is the phase shift depending on the mutual arrangement of the poles of the primary and secondary windings. When using the device as a linear displacement meter, it will carry information about the forward movement of the secondary winding relative to the primary, and if the location of the poles is along the primary displacement (measurement) line on the primary and the second windings are made without errors, then V is proportional to the absolute displacement t, v. However, due to deviations of the location due to manufacturing errors and aging, with the second winding receives the signal kUosin (wt -fi; + Aipi -t-Ai / Jj), where D v is the angle increment due to the norm of the location of the poles on the secondary winding; D is the increment of the angle v due to the errors of the location of the poles on the primary winding. In accordance with the output of the electric signal to the absolute linear displacement, it is necessary to compensate for the brevity of D Vi and D, then from the secondary winding it is necessary to obtain U2,7 kUo-sin 6Jt + 1 - (D vl +). for example, using a plug-in rep ary winding RC circuit. The accumulated error D vj is determined by the following expression: 5 ki 5 where b vj D (/ 2 is the accumulated phase error at n poles; is the number of poles of the primary winding on the length e; S is the pole of the poles (or screw thread 1); the accumulated polarity of the poles on the length C; ki is the proportionality coefficient; error 56 can be brought to zero by stretching the screw 1 along the axis O-O within the elastic deformations, which is achieved by turning the nut 4 against screw 1 in one direction or the other Fazor Formula Guilting device according to aut. No. 145932, characterized in that, in order to increase the measurement nausea, the screw of the device is hollow with an internal thread at one end, and the device is equipped with a nut with internal and external threads of different pitch installed inside the screw, with one end rigidly connected to the screw, and the other end screwed into the nut. Sources of information taken into account during the examination 1. Copyright certificate (ХСР № И5932, кл. G 01 R 25/04. 1961 (prototype). . / g , / § T7TL x uz.f 2