Systems and methods for improved control of...

Electrical generator or motor structure – Non-dynamoelectric – Charge accumulating

Reexamination Certificate

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C318S116000

Reexamination Certificate

active

07548011

ABSTRACT:
Methods and apparatuses for sensing and adjusting lateral motion in a comb drive actuated MEMS device are provided. If lateral motion is sensed by a lateral motion sensor coupled to the comb drive actuated MEMS device, and the lateral motion is greater than a reference value, a feedback controller adjusts the lateral motion by providing a drive signal to a comb drive electrode of a comb drive actuator.

REFERENCES:
patent: 5998906 (1999-12-01), Jerman et al.
patent: 6064997 (2000-05-01), Jagannathan et al.
patent: 6133670 (2000-10-01), Rodgers et al.
patent: 6185469 (2001-02-01), Lewis et al.
patent: 6611823 (2003-08-01), Selmic et al.
patent: 6612029 (2003-09-01), Behin et al.
patent: 6710507 (2004-03-01), Murphy
patent: 6753638 (2004-06-01), Adams et al.
patent: 6825967 (2004-11-01), Chong et al.
patent: 6903486 (2005-06-01), Jerman et al.
patent: 6947657 (2005-09-01), Chen et al.
patent: 6996306 (2006-02-01), Chen et al.
patent: 7080055 (2006-07-01), Campos et al.
patent: 2005/0047721 (2005-03-01), Chen et al.
patent: 2007/0267939 (2007-11-01), Borovic et al.
patent: 2008/0197748 (2008-08-01), Naftali et al.
Borovic et al. “The Lateral Instability Problem in Electrostatic Comb Drive Actuators: Modeling and Feedback Control”, May 2006, J. Micromech. Microgen. 16 (2006) 1233-1241.
Elata et al. “Side Pull-in of Individual Comb Drive Fingers”, Eurosensors 2005, Sep. 2005, Barcelona, TP29.
Chiou et al., “Extending the Traveling Range with a Cascade Electrostatic Comb Drive Actuator”, Dec. 2007, J. Micromech. Microeng. 18, (2008) (015018)(7pp).
Borovic et al., “Control Issues for Microelectromechanical Systems”, IEEE Control Systems Magazine, Apr. 2006.
Astrom and Wittenmark, In:Computer-Controlled Systems: Theory and Design, 294; 307; 152; Prentice-Hall, Upper Saddle River, 1997, no month provided.
Borovic et al., “Lateral motion control of electrostatic comb drive: new methods in modeling and sensing,”Proc.16thIASTED Int. Cong. on Modeling&Simulation, 301-307, May 2005.
Borovic et al., “The lateral instability problem in electrostatic comb drive actuators: modeling and feedback control,”J. Micromech. Microreng., 16:1233-1241, May 2006.
Borovic et al., In: “Control of a MEMS Optical Switch,”Proc. 42ndIEEE Intl. Conf. on Decision and Control, CDC, Bahamas, Dec. 2004.
Borovic et al., “Open-loop versus closed-loop control of MEMS devices: choices and issues,”J. Micromech. Microeng., 15:1917-1924, Aug. 2005.
Borovic, “Modeling, actuation, and control of microelectromechanical systems (MEMS),” Doctoral Dissertation presented to faculty of Dept. of Electrical Engineering, The University of Texas at Arlington, Dec. 2005.
Bryzek et al., “Integrating microelectromechanical systems with integrated circuits,”IEEE Instrumentation&Measurement Magazine, 7(2):51-59, Jun. 2004.
Bryzek et al., In: “Control Issues for MEMS,”Proc. 42ndIEEE Conf. on Decision and Control, HI, 3:9-12, 2003, no month provided.
Chen and Lee, “Design and modeling for comb drive actuator with enlarged static displacement,”Sensors and Actuators A, 115:530-539, 2004, no month provided.
Elata et al., “Analytical approach and numberical α-lines method ofr pull-in hyper-surface extractino of electrostatic actuators with multiple uncoupled voltage sources,”J. Microeletromech. Syst., 12:681-691, Oct. 2003.
Fujita, “Microactuators and micromachines,”Proc. of the IEEE, 86:1721-1732, Aug. 1998.
Grade et al., “Design of large deflection electrostatic actuators,”J. Microelectromech. Systems, 12:335-343, Jun. 2003.
Legtenberg et al., “Comb-drive actuators for large displacements,”J. Micromech. Microeng., 6:320-329, 1996, no month provided.
Liu et al., “Optical and mechanical models for a variable optical attenuator using a micromirror drawbridge,”Micromech. Microeng, 13:400-411, Mar. 2003.
Seeger and Boser, “Charge control of parallel-plate, electrostatic actuators and the tip-in instability,”Microeletromech. Syst., 12(5):656-671, Oct. 2003.

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