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특허 상세정보

Method and apparatus for thruster transient control

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) B64G-001/26   
미국특허분류(USC) 244/171; 244/164; 244/169
출원번호 US-0487364 (1983-04-21)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Radlo, Edward J.Allen, Kenneth R.Sanborn, Robert D.
인용정보 피인용 횟수 : 17  인용 특허 : 6
초록

Transients and steady state error induced in maneuvering a satellite due to a disturbance torque caused by thrust mismatch or differential in the alignment of thrusters with respect to the center of mass are minimized by introducing a torque balancing bias at the input of a thrust modulator of the thrusters prior to sensing position or attitude error. The bias may instantly off-modulate the thruster control signal to cancel the effects of attitude transients before errors develop. Other axes thrusters may be on-modulated instantaneously to compensate for...

대표
청구항

1. For use in a spacecraft during a change in velocity maneuver, the spacecraft employing a plurality of thrusters, at least a first thruster and a second thruster being disposed to develop mutually counteractive moment arms of thrust relative to at least one axis through a center of mass of the spacecraft, said first thruster and said second thruster being capable of developing unequal moment arms of force, a method for counteracting disturbance transients comprising the steps of: storing prior to said manuever a value representative of an estimated d...

이 특허를 인용한 특허 피인용횟수: 17

  1. William A. Hoskins ; Robert J. Cassady. ARC discharge initiation for a pulsed plasma thruster. USP2002046373023.
  2. Surauer Michael (Chieming DEX) Porte Francois (Munich DEX) Bittner Helmut (Munich DEX). Apparatus for controlling the attitude of and stabilizing an elastic body. USP1991085042752.
  3. Goodzeit Neil Evan (Princeton NJ) Ratan Santosh (Lawrenceville NJ). Attitude control for spacecraft with movable appendages such as solar panels. USP1997115687933.
  4. Weigl, Harald J.; Goodzeit, Neil E.; Ratan, Santosh. Attitude determination system for yaw-steering spacecraft. USP2010117835826.
  5. John S. Higham ; Keith Reckdahl. Controller and control method for satellite orbit-keeping maneuvers. USP2002096445981.
  6. Goodzeit,Neil Evan; Lempke,James Donald. Efficient orbit sparing system for space vehicle constellations. USP2006057051980.
  7. Goodzeit, Neil Evan. Fault tolerant attitude control system for zero momentum spacecraft. USP2004036702234.
  8. Namera Takakazu (Tokyo JPX) Ogura Naoto (Tokyo JPX). Orbit control system for a satellite. USP1990094958788.
  9. John S. Higham ; Rhys Kevin Adsit. Pre-bias scheme for roll momentum unloads on pitch momentum bias/yaw reaction wheel spacecraft. USP2002086439509.
  10. Garg Subhash C. (San Jose CA) Bhat Mahabaleshwar K. P. (San Jose CA). Spacecraft attitude control using coupled thrusters. USP1989074848706.
  11. Woo, Byoungsam; Ganji, Farid; Cooper, John Hutton. Spacecraft momentum unload and station-keeping techniques. USP2015048998146.
  12. Hubert Carl Henry. Spacecraft thruster operation for improved orbital maneuver accuracy. USP1998125850993.
  13. Goodzeit, Neil Evan; Li, Xipu. Sun sensor alignment compensation system. USP2003106629672.
  14. Goodzeit, Neil E.. System for geosynchronous spacecraft rapid earth reacquisition. USP2004026695263.
  15. Goodzeit, Neil E.; Weigl, Harald J.. System for on-orbit correction of spacecraft payload pointing errors. USP2004056732977.
  16. Holmes Thomas J.. Thruster on time signaling with flexure compensation avoidance. USP2000096125310.
  17. Kronhaus, Igal. Unified orbit and attitude control for nanosatellites using pulsed ablative thrusters. USP2016059334068.