US 7,321,175 B2 | ||
Low cost precision linear actuator and control system | ||
William Culpi, Lake Forest, Calif. (US); Thomas K. Rigney, Silverado, Calif. (US); Karl R. Honigmann, Irvine, Calif. (US); and Aziz A. Mahmoud, Fountain Valley, Calif. (US) | ||
Assigned to Newport Corporation, Irvine, Calif. (US) | ||
Filed on Jan. 24, 2005, as Appl. No. 11/43,001. | ||
Claims priority of provisional application 60/539402, filed on Jan. 26, 2004. | ||
Prior Publication US 2005/0184599 A1, Aug. 25, 2005 | ||
Int. Cl. H02K 41/00 (2006.01) |
U.S. Cl. 310—12 [310/15; 310/80] | 34 Claims |
1. A position control system, comprising:
a linear actuator including a motor with a shaft having a splined portion and a threaded portion, a threaded rotor having
a threaded portion engaged with the threaded portion of the shaft, a splined boss having a splined portion engaged with a
splined portion of the shaft and a torsion spring coupled between the shaft and the boss and configured to apply a rotational
torque to the shaft relative to the splined boss; and
a controller coupled to the linear actuator by an information conduit.
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