SU1193692A1 - Electromechanical sine signal generator - Google Patents

Abstract

ELECTROMECHANICAL GENERATOR SINUSOVDALNYH signals containing a first, second, third and fourth strain gages arranged in pairs on both sides of the elastic plate and incorporated into the shoulders of a multiplying bridge which one diagonal is the output of the electromechanical generator, and the other - of its electrical input, faceplate fixed to axis at an angle to it, with the faceplate axis being the input of the frequency setting of the electromechanical generator, and the elastic plate is attached to the console on one side wall of the housing and positioned in the longitudinal axis relative to the axis of rotation of the faceplate, the free end of the elastic plate is clamped in a slider located in the first guide hole of the other side wall of the housing, which is oriented along the axis of rotation of the plate, in order to increase efficiency by changing the amplitude of the sinusoidal signal during operation, an additional slider, a rod and a carriage were inserted into it, and in the main slider a second guide hole was made, oriented perpendicular to the and rotation of the faceplate, in which is placed the (L complementary slide, rigidly connected C to one end of the stem, the stem being parallel to the axis of rotation of the faceplate and placed in the guide hole of the carriage located in the second guide hole and coupled with the adjusting screw, and the other end of the stem has a backlash-free contact with the faceplate.

Description

The invention relates to devices forming a periodic voltage of a sinusoidal shape, and can be used in analog computers;

The purpose of the invention is to increase efficiency by changing the amplitude of the sinusoidal signal during operation.

In FIG. 1 shows an electromechanical sine wave generator; in FIG. 2 is a functional diagram.

The device comprises a housing with one side wall 1, a second side wall 2, an axis 3, a faceplate 4, an elastic plate 5, a first, second, third and fourth strain gages 6-9, bearings 10 and 11, a slider 12, a first guide hole 13, a rod 14, the second guide hole 15, the carriage 16, the guide hole of the carriage 17, the adjustment screw 18, the additional slider 19, the guide hole of the slider 20, a constant voltage source 21, output 22.

The electromechanical generator of sinusoidal signals operates as follows.

When the axis 3 is rotated with a constant angular velocity due to articulation with the faceplate 4, the elastic plate 5 experiences longitudinal deformations described by the relationship:

¹ * (ψΑβίηωί _Λ (1) where A is the strain amplitude;

O is the angular velocity of rotation.

The strain amplitude is

where r is the distance between the longitudinal axis of the rod 14 and the axis of rotation 3; οί - the angle of inclination of the faceplate 4.

By rotating the screw 18, the carriage 16, as well as the rod 14 of the slide 12, is moved in the diametrical plane of the faceplate 4 and the required distance value is set. Thus, the strain amplitude of the elastic plate 5 changes, which transforms into multiple changes in the resistances of the first, second, third, and fourth strain gages 6–9 according to the law βΐη cot (3) where R _o is the resistance value of the strain gauge in an undeformed state;

aR is the increment of resistance during deformation.

The signs in expression (3) provide for the response of the strain gauge to tension and compression.

Based on the well-known property of the bridge circuit, when a constant voltage is applied to its input, to form a signal at the output proportional to the function of increments of the arm resistances, at output 22 we obtain a sinusoidal signal ΐ (ί) π · 5ΐηωί.

From the expression (4) it follows that the amplitude of the output signal fully depends on the current value of the distance r, which can be set quite accurately.

FIG. 2

VNIIIPI Order 7317/53 Circulation 709 Subscription

Affiliate PPP ’’ Patent,

Uzhhorod st. Project, 4

Claims (1)

ELECTROMECHANICAL SINUSOIDAL SIGNAL GENERATOR, containing the first, second, third and fourth strain gauges placed in pairs on both sides of the elastic plate and included in the shoulders of the multiplying bridge, one diagonal of which is the output of the electromechanical generator, and the other is its electrical input, housing, faceplate, fixed to axis at an angle to it, and the faceplate axis is the input of the frequency setting of the electromechanical generator, and the elastic plate is mounted cantilever on one side wall of the housing and is located in the longitudinal direction relative to the axis of rotation of the faceplate, the free end of the elastic plate is pinched in a slider located in the first guide hole of the other side wall of the housing, which is oriented along the axis of rotation of the faceplate, characterized in that, in order to increase efficiency by changing the amplitude of the sinusoidal signal during operation, an additional slider, rod and carriage are inserted into it, and in the main slider a second guide hole is made, oriented perpendicular to the bp axis the face of the faceplate, in which an additional slider is placed, rigidly connected to one end of the stem, the stem being parallel to the axis of rotation of the faceplate and placed in the guide hole of the carriage located in the second guide hole and articulated with the adjusting screw, and the other end of the stem has a clearance-free contact with faceplate. >