Electricity: motive power systems – Positional servo systems – With stabilizing features
Patent
1993-04-29
1995-07-11
Martin, David S.
Electricity: motive power systems
Positional servo systems
With stabilizing features
318460, 318618, 212272, G05B 501
Patent
active
054324238
ABSTRACT:
An electronic damping system is disclosed which dampens mechanical resonant vibrations of a gantry beam end. The system includes a secondary velocity feedback loop in addition to the main servo motor-tach velocity loop. The resonant velocity of the beam is sensed from the movement of the end of the beam. The velocity feedback signal is summed as negative feedback with the velocity command signal from the position controller. The resultant sum of the signals are combined to form the velocity reference input command signal to a servo power amplifier. The servo power amplifier is connected to a main servo motor which controls the movement of the gantry beam in the Y-direction relative to printed circuit board.
REFERENCES:
patent: 4704792 (1987-11-01), Itagaki et al.
patent: 4710865 (1987-12-01), Higomura
patent: 4810941 (1989-03-01), Ohishi et al.
patent: 4823053 (1989-04-01), McCraken et al.
patent: 4918364 (1990-04-01), Naito
patent: 4945294 (1990-07-01), Anderson, Jr.
patent: 4963804 (1990-10-01), Geiger
patent: 5002448 (1991-03-01), Kamijima et al.
Hewlett-Packard Application Note 243-2, "Control System Development Using Dynamic Signal Analyzers", Copyright .COPYRGT.1984, Hewlett-Packard Co., pp. 1 and 6-27.
Martin David S.
Universal Instruments Corporation
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