Boots – shoes – and leggings
Patent
1992-06-12
1997-03-04
Teska, Kevin J.
Boots, shoes, and leggings
364457, 364455, 364439, 244164, 244165, 244171, 244162, G06F 1900
Patent
active
056086342
ABSTRACT:
A spacecraft is controlled by a composite attitude signal including two components with different passbands. In one embodiment, a spacecraft attitude control system includes an attitude sensor and a controller which provides a time derivative function. High frequency noise components of the sensed attitude signal are enhanced by the derivative, and tend to cause attitude jitter or excess power consumption. The jitter is reduced by low pass filtration of the sensor signal, but this undesirably reduces the high frequency response of the attitude sensor. The high frequency response is restored by high pass filter coupled to a reaction or momentum wheel tachometer, which produces a signal representative of the high frequency components of the body rate. A summing circuit couples together the filtered attitude sensor signals with the high frequency components of the wheel speed signal to produce a relatively noise free broadband body rate signal. In another embodiment, the spacecraft estimates the attitude, and the estimated attitude either lacks high-frequency components, or they are noisy. The missing or noisy high-frequency components are replaced by high frequency components derived from a wheel.
REFERENCES:
patent: 4062509 (1977-12-01), Muhlfelder et al.
patent: 4294420 (1981-10-01), Broquet
patent: 4556956 (1985-12-01), Dickenson et al.
patent: 4758957 (1988-07-01), Hubert et al.
patent: 4931942 (1990-06-01), Garg et al.
patent: 4960250 (1990-10-01), Schmidt
patent: 5025381 (1991-06-01), Goodzeit et al.
patent: 5047945 (1991-10-01), Paluszek
patent: 5058835 (1991-10-01), Goodzeit et al.
patent: 5107434 (1992-04-01), Paluszek
patent: 5140525 (1992-08-01), Shankar et al.
patent: 5205518 (1993-04-01), Stetson, Jr.
Goodzeit Neil E.
Paluszek Michael A.
Berard C. A.
Louis-Jacques Jacques H.
Martin Marietta Corp.
Meise W. H.
Teska Kevin J.
LandOfFree
Low noise spacecraft body rate sensing arrangement for attitude does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low noise spacecraft body rate sensing arrangement for attitude , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low noise spacecraft body rate sensing arrangement for attitude will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2151490