SU555310A1 - Device for dynamically balancing multi-support rotors - Google Patents

Description

(54) DEVICE FOR DYNAMIC BALANCING OF MULTI-BOOM ROTORS

the sensor computes the components of the parameters of the oscillating parameters and the influence coefficients, and the digital supermixing unit is made as a block for determining the mass and installation angles of the loads according to the values of the auxiliary function coefficients and is connected by its input to the output of the auxiliary coefficient digital calculator.

The drawing is a block diagram of the proposed device for dynamic balancing of jvmoro-supporting rotors.

The device contains oscillation parameter sensors 1, the output of which is connected to the input of an analog conversion unit 2, an analog-to-digital conversion unit 3 located between the analog conversion unit 2 and the auxiliary function 1 digital calculator 4, the output of which is connected to the digital computing unit 5, where the signal is fed to the input of indicator 6.

The device works as follows. The signals from the vibration parameter sensors 1 are fed to the analog conversion unit 2, where they are converted into electrical signals proportional to the amplitude and phase of the oscillations. The converted signals arrive at block 3 of the analog-digital conversion, in the memory of which the values of test loads and test run numbers are recorded.

In block 3, the signals are converted into digital and the components of the oscillation parameters and influence coefficients input to the input of the auxiliary function coefficient calculation unit 4 are calculated. In block 4, the square matrix of the influence coefficients is converted to a square by multiplying by the transported matrix of influence coefficients.

but

and

01,

where n is the number of balancing planes;

m is the scale of measurement points (supports);

a - coefficients of influence in a rectangular matrix;

в - coefficients of influence in a square matrix;

A - initial parameters of oscillations;

B - converted vibration parameters.

The coefficients of the square matrix are fed to the digital computing unit 5, where they are used to calculate the weights and installation angles of the weights that are induced on the indicator 6.

Claims (2)

1. US Patent No. 3071972, cl. 73-462.1963. 2. Materials of the international symposium. Balancing of t1rugo-deformable rotors Report by Karl Schenk (Germany) Balancing flexible rotors using a computer, LZO, Electrosila, 1 HI2.09.74 (prototype)