SU144627A1 - Balancing device - Google Patents

Description

Known balancing devices in which the sensor signal imbalance is amplified by narrow band amplifier and is deployed on the screen of a cathode ray tube in okrul NOSTA diameter, nroportsionalnym magnitude imbalance mass and place unbalanced mass is determined by a phase shift between the reference pulse from the coordinate features on the rotor and the sensor signal unbalance. However, in such devices, no phase shifts of signals are provided on the screen of the cathode ray tube.

In the described device for compensation on the screen of the electron-beam tube of phase shifts of the signals of the imbalance and the reference pulse when passing through the resonant frequency of the narrowband amplifier, the reference signal channel is formed by series-connected photoelectric sensor, pulse amplifier, integrating chain, narrowband amplifier, amplitude limiter, differentiating chain and detector, unipolar impulse from which enters the grid of the electron-beam tube.

The drawing shows a block diagram of the indicator part of the device.

The signal characterizing the mass imbalance / from sensor 2 is fed to a narrowband amplifier 3, in which it is amplified, and is fed to a cathode ray tube 4, on the screen 5 of which it turns into a circle with a diameter proportional to the amount of unbalanced mass /. When the signal passes through the resonant frequency of the amplifier 3, its phase changes by 180. To determine the location of mass 1, the reference pulse emitted by the photoelectric sensor 6 is used when beam 7 hits the light 7 and is slanted by the illuminator 8 and reflected from the coordinate line.

No. 144627

the rotor 10. The reference pulse passed by the amplifier 11 is converted by the integrating chain 12 into a sawtooth voltage that is fed to the input of the narrowband amplifier 13 with a resonant frequency and filter quality factor corresponding to the frequency and quality factor of the filter amplifier 3. The amplifier 13 selects from the sawtooth voltage the main harmonic and shifts it in phase by 180 ° a. analogous amplifier 3. Then the sinusoidal voltage is limited in amplitude by limiter 14, differentiated by string 15 and, after passing through detector 16, is fed to It does not have a single-pole pulse on the grid 17 of the cathode-ray tube 4. Due to the fact that when going through the resonant frequency of the filters of the amplifiers 3 and 13, the same phase shifts of the imbalance signal and the reference pulse occur, their relative phase shift remains constant and characterizes the mutual angular position unbalanced mass / and coordinate line 9.

The described device makes it possible to accelerate the determination of the magnitude and location of the unbalanced mass of rapidly rotating rotors, for example gyros, to increase productivity and improve the accuracy of the experiment.

The Technical Administration of the Moscow City Economic Council and its conclusion noted the novelty and industrial usefulness of the described device.

Subject invention

A balancing device in which the imbalance sensor signal is amplified by a narrowband amplifier and turns on a cathode-ray tube screen in a circle with a diameter proportional to the unbalanced mass, and the unbalanced mass is determined by the phase shift between the reference impulse from the coordinate line on the rotor and the unbalance sensor signal by a non-equilibrium mass on the rotor. characterized in that, in order to compensate on the cathode ray tube screen the phase shifts of the signals of the imbalance sensors and supports pulse when passing through the resonant frequency of a narrowband amplifier,: the reference signal channel is formed by a series-connected photoelectric sensor, a pulse amplifier, an integrating chain, a narrowband amplifier, an amplitude limiter, a differentiating chain and a detector, a single-pole pulse from which is fed to the cathode-ray tube network.