Precision drive assembly for telescopes and other instruments

Details Precision drive assembly for telescopes and other instruments Precision drive assembly for telescopes and other instruments

1991-09-30

1994-07-05

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

74 8915, G05B 1906, G05B 1919

Patent

active

053270622

ABSTRACT:
A precision drive assembly for producing constant accurate angular motion of an instrumentality about an axis and which includes a lead screw and a nut threaded to the lead screw. The lead screw is driven by a motor. A radial (tangent) arm is coupled in one end to the nut and at the other end to the instrumentality so that linear movement of the nut along the lead screw causes the radial arm to turn the instrumentality about its axis. Position-rate errors inherent in the drive assembly are corrected by mechanical cam means, or by electric/electronic drive means motor.

REFERENCES:
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patent: 4522078 (1985-06-01), Fukuta
patent: 4764881 (1988-08-01), Gagnon
patent: 4878394 (1989-11-01), Nakamura et al.
patent: 4919523 (1990-04-01), Burr
patent: 5077561 (1991-12-01), Gorton et al.

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