System for preventing unbalance vibrations and synchronous distu

Details System for preventing unbalance vibrations and synchronous distu System for preventing unbalance vibrations and synchronous distu

1988-05-17

1990-03-20

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular 'error-detecting' means

318625, 318629, 318630, 318632, 310 905, G05D 1500

Patent

active

049104497

ABSTRACT:
A rotation control system for preventing unbalance vibrations and synchronous disturbance vibrations of a rotary member suspended by a magnetic bearing. This system includes a vibration detector which detects radial vibration of the rotary member. On the basis of the detected radial vibration, a compensating signal which has the same amplitude and cycle as the vibration component having the rotational frequency is generated. The difference between the detected vibration and the compensating signal is obtained and used for controlling the radial position of the magnetic bearing.

REFERENCES:
patent: 3886871 (1975-06-01), Ross et al.
patent: 4121143 (1978-10-01), Haberman et al.
patent: 4626754 (1986-12-01), Habermann et al.
patent: 4686404 (1987-08-01), Nakazeki et al.
patent: 4697128 (1987-09-01), Matsushita et al.

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