NASA Scientific and Technical Aerospace Reports - The University ...

20100017552 Toledo Univ., OH USA
Control system for bearingless motor-generator
Kascak, Peter E., Inventor; Jansen, Ralph H., Inventor; Dever, Timothy P., Inventor; February 23, 2010; 27 pp.; In English
Contract(s)/Grant(s): NCC3-916; NCC3-924
Patent Info.: Filed October 30, 2008; US-Patent-7,667,418; US-Patent-Appl-SN-12/261,707; No Copyright; Avail.: CASI:
A03, Hardcopy
ONLINE: http://hdl.handle.net/2060/20100017552
A control system for an electromagnetic rotary drive for bearingless motor-generators comprises a winding configuration
comprising a plurality of individual pole pairs through which phase current flows, each phase current producing both a lateral
force and a torque. A motor-generator comprises a stator, a rotor supported for movement relative to the stator, and a control
system. The motor-generator comprises a winding configuration supported by the stator. The winding configuration comprises
at least three pole pairs through which phase current flows resulting in three three-phase systems. Each phase system has a
first rotor reference frame axis current that produces a levitating force with no average torque and a second rotor reference
frame axis current that produces torque.
Official Gazette of the U.S. Patent and Trademark Office
Mechanical Drives; Rotors; Torque; Stators; Control
20100017557 NASA, Washington, DC USA
Differential temperature sensor system and method
Savchenkov, Anatoliy A., Inventor; Yu, Nan, Inventor; Maleki, Lute, Inventor; Iltchenko, Vladimir S., Inventor; Matsko,
Andrey B., Inventor; Strekalov, Dmitry V., Inventor; February 23, 2010; 10 pp.; In English
Patent Info.: Filed September 20, 2007; US-Patent-7,665,891; US-Patent-Appl-SN-11/858,318; No Copyright; Avail.:
CASI: A02, Hardcopy
ONLINE: http://hdl.handle.net/2060/20100017557
A differential temperature sensor system and method of determining a temperature shift of an optical resonator and its
surroundings are provided. The differential temperature sensor system includes a light generating device capable of generating
a beam having a carrier frequency, a modulator capable of modulating the beam with a sideband frequency, and an optical
resonator capable of supporting an ordinary mode and an extraordinary mode. The system includes an ordinary mode-lock
setup capable of locking the carrier frequency of the beam to the ordinary mode of the optical resonator and an extraordinary
mode-lock setup capable of locking the sideband frequency of the beam to the extraordinary mode of the optical resonator by
providing a specific radio frequency to the modulator substantially corresponding to a frequency shift between the ordinary
mode and the extraordinary mode of the optical resonator resulting from a temperature change of the optical resonator. A
processor precisely calculates the differential temperature based upon the frequency shift between the ordinary mode and
extraordinary mode of the optical resonator.
Official Gazette of the U.S. Patent and Trademark Office
Temperature Sensors; Optical Resonators; Frequency Shift; Modulators; Carrier Frequencies; Radio Frequencies
20100017561 Illinois Univ., Urbana, IL USA
Micromachined Artificial Haircell
Liu, Chang, Inventor; Engel, Jonathan, Inventor; Chen, Nannan, Inventor; Chen, Jack, Inventor; February 16, 2010; 18 pp.;
In English
Contract(s)/Grant(s): NAG5-8781
Patent Info.: Filed June 1, 2007; US-Patent-7,661,319; US-Patent-Appl-SN-11/809,523; No Copyright; Avail.: CASI: A03,
Hardcopy
ONLINE: http://hdl.handle.net/2060/20100017561
A micromachined artificial sensor comprises a support coupled to and movable with respect to a substrate. A polymer,
high-aspect ratio cilia-like structure is disposed on and extends out-of-plane from the support. A strain detector is disposed
with respect to the support to detect movement of the support.
Official Gazette of the U.S. Patent and Trademark Office
Micromachining; Sensors; Strain Measurement; Microelectronics
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