Machine element or mechanism – Gyroscopes – Gyroscope control
Reexamination Certificate
2006-12-26
2006-12-26
Pang, Roger (Department: 3681)
Machine element or mechanism
Gyroscopes
Gyroscope control
C074S005370, C074S08400R, C244S165000, C244S079000
Reexamination Certificate
active
07152495
ABSTRACT:
A disturbance-cancellation system and method is provided that facilitates the adaptive cancellation of periodic disturbances. The disturbance-cancellation system and method includes a pair of control moment gyroscopes (CMGs) arranged together as a scissored pair. The scissored pair of CMGs is used to create a periodic torque with a controllable amplitude and frequency. The periodic torque created by the CMGs is adaptively controlled to cancel out periodic disturbances in the system. The system and method creates a periodic torque with a controllable amplitude and frequency by rotating the inner-gimbal assemblies of the CMGs in opposite directions at substantially equal phase and angular velocity. Amplitude matching can be achieved by adjusting the rotor spin rate. The steady-state constant motion results in a periodic torque along the output axis of the scissored pair, while components of torque along axes orthogonal to this one cancel out.
REFERENCES:
patent: 3071012 (1963-01-01), Baring-Gould
patent: 3071977 (1963-01-01), Ten et al.
patent: 3653269 (1972-04-01), Foster
patent: 4258579 (1981-03-01), Olbrechts
patent: 4269073 (1981-05-01), McIntyre
patent: 4354393 (1982-10-01), Acker et al.
patent: 4399714 (1983-08-01), Barker
patent: 4472978 (1984-09-01), Levine et al.
patent: 4735382 (1988-04-01), Pinson
patent: 4989466 (1991-02-01), Goodman
patent: 5090260 (1992-02-01), Delroy
patent: 5681012 (1997-10-01), Rosmann et al.
patent: 5944761 (1999-08-01), Heiberg
patent: 6305647 (2001-10-01), Defendini et al.
patent: 6907800 (2005-06-01), Inman
Wie, B. et al. “New Approach to Attitude/Momentum Control for the Space Station,” Journal of Guidance and Control and Dynamics, AIAA, NY, vol. 12, No. 5, Sep. 1, 1989, pp. 714-722: abstract, p. 714, col. #1, pgraph 1-col. #2, pgraph 1; fig 2; p. 717, col. #2, last pgraph-p. 718, col. # 2, pgraph 1.
Honeywell International , Inc.
Ingrassia Fisher & Lorenz
Pang Roger
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