SU767507A1 - Method for measuring angle of inclination - Google Patents

Description

The invention relates to a measurement technique, in particular to methods for measuring the angle of inclination, and can be used to measure 5 small angles with orientations of surfaces relative to the natural horizontal plane, as well as in all areas of science and technology where precision angles are needed.

The known method of measuring the angle of inclination is based on using a bubble ampoule as a null pointer, which concludes-} 5 seconds that when the bubble ampoule is tilted, its bubble is displaced from the initial position. By rotating the micrometer head, the angle of inclination of the bubble ampoule is changed to achieve 20 seconds after the bubble returns to its original position. The angle is determined by the known step of the micrometer head 1. The disadvantage of this method is that it has a significant error due to errors in the mechanical parts of the device that implement the method, and this method also makes it difficult to automate the measurements. ZO

The closest to the present invention is a method for measuring the angle of inclination, which means that the ammunition associated with the object being monitored with the buzzing body places two junction electric fields, the slope of the | T ciMpule compensates for the displacement of the bubble by changing the parameters of the electric fields and converts the compensating effect .to an electrical signal according to which the area of slope is 2.

The disadvantage of this method is the poor accuracy of the measurement of the angle of inclination and the impossibility of directly transforming the angle into a digital formula.

The purpose of the invention is to improve the accuracy .-,

Objective §1 is achieved by those. That compensation of estimates is made by changing the frequency of fields, and the angle is judged by the frequency difference.

The drawing shows a device that implements the proposed method.

Ampoule 1, rigidly connected to the base 2, is placed in two electric fields 3 and 4, created between the plates of capacitors 5, 6 and 5d 7. due to

It means that variable voltages having the same magnitude, equal to and, are applied to them. The frequencies of the alternating voltages have individual values of f, and f, and these frequencies can change their values, however they are related as follows

-Af, (1)

+ Af;

20

where fo is the average frequency / Af is the magnitude of the frequency deviation. The measurement method is carried out in a SEMI.

 In the ampoule 1 there is a bubble 8. At the base of the base 2 with ampoule 1 at an angle o (the bubble 8 is affected by the gravitational force Fp, causing one to float. This force is equal to

 FT v.p-c5 (: (2)

where V is the general bubble; .

The density of the fluid filling the ampoule.

At the same time, a ponderomotive force F acts on a bubble in an electric field, depending on the intensity of the electric fields and their frequencies.

KuMf -f),

(3)

-, coefficient depending on

where is K. capacitor design

and the characteristics of the ampoule. Since Frequencies f and fo are related to each other by an expression (O, then the magnitude of the ponderomotive force can be written as

F 2Ki D f.

(M

The measurement of the frequency of fields 3 and 4, produces the compensation of the force acting on the bubble 8, caused by the pig base 2 with the ampoule 1, the ponderomotive force of the electric field of the electric field. With this bubble 8 | remains unmovable. From conditional statics, then an equst of forces F, F,, can be written

2Ki & f

(five)

0 (v-j)

767507

Thus, if the bubble 8 at any angle of inclination is in its initial position due to a change in the frequencies of the electric fields, the difference in the electric voltages is proportional to the angle of inclination of the base 2.

The measured frequency difference of the electric fields of 3.4 is judged by the amount of inclination of the base 2 with ampoule 1 relative to the horizon line.

Consequently, the compensation of the force caused by the -gravity field, the ponderomotive force arising from the different frequencies of electric fields, improves the accuracy of the measurement of the angle of inclination, by implementing the method, the measurement results can be directly obtained in digital form.

Claims (2)

Invention Formula The method of measuring the angle of inclination, which consists in that the ampoule with a bubble associated with the control object is placed in two adjacent electric fields, the ampoule is tilted, the bubble displacement is compensated by changing the parameters of the electric fields, and the compensation signal is converted into an electrical signal of 6 tons l and h And with the fact that, in order to achieve accuracy, compensation of the bias is carried out by changing the frequency of the fields, and the magnitude of the error is judged by the frequency difference. , Sources of information taken into account in the examination 40 1. V. Eidinov. Measurement of angles in mechanical engineering. M., Standartgiz, 1963, p. 238. 2. USSR author's certificate 5 D 478181, cl. G 01 ё 7/30 (prototype).