Low vibration pulse drive device for an electric motor

Details Low vibration pulse drive device for an electric motor Low vibration pulse drive device for an electric motor

1980-11-10

1988-09-06

Weldon, Ulysses

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318345F, 318460, H02P 726

Patent

active

047695820

ABSTRACT:
A pulse-drive circuit for an electric motor in which the steep edges in the drive-signal are made to vary substantially stepwise, i.e. around a first time instant the signal changes from a first level to a second level and around a second instant the signal changes to a third level. This makes it possible to reduce a mechanical resonance vibration having a period of twice the time interval between the two instants.

REFERENCES:
patent: 2273988 (1942-02-01), Pinto
patent: 3193711 (1965-07-01), Westem
patent: 3614543 (1971-10-01), Dick
patent: 3678335 (1972-07-01), Pucher
patent: 3764822 (1973-10-01), Ebbinge et al.
patent: 4101811 (1978-07-01), Dandrel et al.
patent: 4235309 (1980-11-01), Kuhl
patent: 4321447 (1982-03-01), Lamb
patent: 4324486 (1982-04-01), Nishikawa

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