SU888041A1 - Angular speed measuring device - Google Patents

Description

(5) DEVICE FOR MEASURING ANGULAR SPEED

one

The invention relates to the field of measurement technology and can be used to measure the angular velocity of moving objects.

A device for measuring the speed of an angular motion is known, in which the measurement of the angular velocity is made according to the result of the deflection of a laminar gas jet under the action of an angular velocity. The deviation of the jet is recorded by a differential thermistor transducer.

It is also known. A device comprising a housing, a working chamber, a supercharger connected through an ionization chamber with a forming nozzle, a differential receiver,. made in the form of several electrodes connected to an electrical measuring circuit 2.

A disadvantage of the known devices is the accuracy of measurements of the angular velocity of motion, due to the low sensitivity of inkjet converters of angular motion.

The aim of the invention is to improve the accuracy of measurements of the speed of angular motion. .

The goal is achieved by introducing an additional nozzle into the known device, mounted coaxially with the forming nozzle and connected to the supercharger, and a regulating choke installed between the supercharger and the ionization chamber, the diameter of the additional nozzle being larger than the diameter of the forming nozzle.

FIG. 1 shows a diagram of the device; in fig. 2 - velocity distribution in gas and ion flows.

Claims (2)

In the housing 1 of the device, a blower 2 is connected to the nozzle 3, a working chamber t, a differential receiver 5 included in an electrical measuring circuit 6, an ionization chamber 7, the input of which is connected through 3. adjustable choke 8 with access to the oppressor 2, and the output of the ionization chamber 7 is connected to the forming nozzle 9. The device operates as follows. The gas flow from the blower 2 forms a laminar gas jet in the working chamber 4 through the forming nozzle 3, as well as through the adjustable choke 8 blows the ionization chamber 7 and the nozzle 9, forms an ion flow in the central part concentric with the gas jet 8 in such a way that the velocity of the particles in its peripheral part is equal to the velocity of the boundary layer of the surrounding gas stream. FIG. 2 depicts this process, where 10 is the distribution of the velocities of the gas jet, 11 is the distribution of the velocities in the ion stream, Rcr the radius of the gas jet, RM the radius of the jet of the ion stream. FIG. 2 that the ion flux has a much greater steepness on the slopes of the parabolic distribution than the gas flow. At the same time, the gas flow ensures a long and thin ion jet, i.e. It makes it possible to significantly increase the steepness of the transformation of the angular velocity. The resulting gas and ion flux washes the differential receiver 5 at which the ion-current discharge takes place. Then, the gas in the pneumatic circuit returns to the supercharger 2. In the absence of velocity or the currents in both halves of the differential receiver 5 (for example, two flat insulated electrodes) are equal, and at the output of the electrical measuring circuit 6, the output signal Ugb 0. Simultaneous deviation occurs The sum of the gas and ion fluxes and a differential current appears at the output of the differential receiver 5, which at the entrance of the electrical measuring circuit 6 is converted into a signal proportional to the angular velocity. The invention makes it possible to increase the slope of converting the angular velocity by a factor proportional to the ratio of the square of the radii of the gas jet and the flow of ions, i.e. It has a significantly greater steepness in comparison with existing methods and devices. Formula for Invention An angular velocity measuring device, soderm (general housing, working chamber, supercharger connected through an ionization chamber with a forming nozzle, differential receiver made in the form of two flat electrodes connected to an electrical measuring circuit, characterized in that, in order to improve accuracy , an additional nozzle is inserted into it, which is installed coaxially with the forming nozzle and connected to the supercharger, and a regulating choke installed between the supercharger and the ionization chamber; The diameter of the additional nozzle is larger than the diameter of the forming nozzle. Sources of information taken into account during the examination 1.-US Patent No. 3205715, CL 73-516, 1965. 2. US patent number / 15bZb, cl. 73-19, 1979 (prototype).