Motor speed controller for suppressing shaft torsion vibration

Details Motor speed controller for suppressing shaft torsion vibration Motor speed controller for suppressing shaft torsion vibration

1994-01-24

1996-08-13

Cabeca, John W.

Electricity: motive power systems

Constant motor current, load and/or torque control

318254, 73650, H02P 700

Patent

active

055459579

ABSTRACT:
A motor controller includes a shaft torsion vibration estimator for estimating a shaft torsion vibration between a motor and a mechanical load and a shaft torque estimator for estimating a shaft torque acting upon a motor shaft, wherein a vibration in a mechanical load driving system is suppressed by utilizing an estimated shaft torsion torque value calculated by the shaft torsion vibration estimator and an estimated shaft torque value calculated by the shaft torque estimator in addition to a detected motor speed value. Using such a system stable speed control having improved response can be achieved since higher order vibration modes can be suppressed without deteriorating its shaft torsion vibration without deteriorating its shaft torsion vibration suppression performance by combining the shaft torsion vibration estimator and the shaft torque estimator.

REFERENCES:
patent: 3772579 (1973-11-01), Stone et al.
patent: 3917989 (1975-11-01), Bereisa, Jr.
patent: 4166377 (1974-09-01), Szabo et al.
patent: 4522620 (1985-06-01), Leister
patent: 4862749 (1989-09-01), Yagi
patent: 4971522 (1990-11-01), Butlin
patent: 5126641 (1992-06-01), Putman et al.
Industrial Application Society, vol. 110, No. 4, pp. 410-417 (1990).

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