US Patent No: 6,622,969
Number of patents in Portfolio can not be more than 2000
Maneuver device for artificial satellite
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Sep 23, 2003
Issued date -
Feb 20, 2002
filing date -
10/078,109
serial no -
In Force
status
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Abstract
The present invention provides a maneuver device for an artificial satellite, which causes small attitude error during maneuver and which requires a shorter period of setting time for obtaining a target attitude. The maneuver device is provided with: a feed forward torque instruction signal generator 8 which outputs a feed forward torque instruction signal 11 based on a maneuver plan; a thruster 10 which outputs control torque based on the feed forward torque instruction signal 11; and an attitude control signal calculator 6 to which an attitude angle and an angular velocity of the artificial satellite as well as a target attitude angle and a target angular velocity are input and which outputs an attitude control signal 13. The maneuver device is further provided with a disturbance compensating signal calculator to which the feed forward torque instruction signal 11 and a detected angular velocity signal 16 are input, and which generates and outputs a disturbance compensating signal 12. The maneuver device is yet further provided with a reaction wheel 7 which generates control torque based on the attitude control signal 13 and the disturbance compensating signal 12.
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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,540,405 Method and apparatus for compensating for magnetic disturbance torques on a satellite | 11 | 1993 | |
| 6,032,903 Cooperative control structures and methods for satellite spin axis control | 10 | 1998 | |
| 6,019,320 Spacecraft acquisition of sun pointing | 9 | 1998 | |
| 6,347,262 Minimum fuel attitude and nutation controller for spinning spacecraft | 9 | 2000 | |
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| 5,259,577 Attitude control system for three-axis stabilized satellite in near-equatorial orbit | 20 | 1991 | |
| 5,850,992 Method for controlling the pitch attitude of a satellite by means of solar radiation pressure | 10 | 1997 | |
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| 6,216,983 Ephemeris/attitude reference determination using communications links | 7 | 1999 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 23, 2015 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |