Servo-control system for an unbalanced rotor vibrator

Details Servo-control system for an unbalanced rotor vibrator Servo-control system for an unbalanced rotor vibrator

2006-11-27

2008-12-30

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

C318S610000, C318S625000, C318S119000

Reexamination Certificate

active

07471057

ABSTRACT:
The invention applies to a vibrator comprising two pairs (A, B) of unbalanced rotors (10to13) driven in synchronous rotation by a first motor, and a second motor arranged to drive a phase shifter mechanism so as to adjust a phase difference between the first pair of rotors and the second pair of rotors; the system comprises:a sensor (C1) for sensing rotation of a rotor of the first pair of rotors;a sensor (C2) for sensing rotation of a rotor of the second pair of rotors, or for sensing the position of the phase shifter mechanism;means for controlling the rotation of the first motor as a function of the phase and the frequency of a force setpoint signal and as a function of the signals delivered by the sensors; andmeans for controlling the rotation of the second motor as a function of the phase, the frequency, and the amplitude of the force setpoint signal and as a function of the signals delivered by the sensors.

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