|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||364/459 ; 364/434 ; 244/169|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 19 인용 특허 : 0|
Position control methods are described for satellites and spacecraft for controlling transition from thruster control to momentum wheel control in a three-axis stabilized spacecraft. Transition from a high-bandwidth, high-torque thruster-controlled stationkeeping (SK) mode to a low bandwidth, low torque momentum wheel On-Orbit Mode is carried out. Usually a unique threshold entry method to automatically initiate the transition mode at the point with the most favorable dynamics. Also, the disclosed method eliminates the use of nutation in conjunction with...
In a spacecraft having thruster and momentum wheel mechanisms including pitch and roll/yaw thrusters and pitch and roll/yaw momentum wheels for maintaining and changing the attitude position of the spacecraft, a method for effecting the transition from a first, stationkeeping mode position controlled by the thruster mechanism to a second, on orbit position controlled by the momentum wheel mechanism, comprising the steps of: Step 1. In a wide bandwidth, large thruster torque stationkeeping mode for a spacecraft wherein the spacecraft is maintained in posi...