LINEAR-QUADRATIC STATIONKEEPING FOR THE STS ORBITER

被引：53

作者：

REDDING, DC ^{[1
]}

ADAMS, NJ ^{[1
]}

KUBIAK, ET ^{[1
]}

机构：

[1] NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058

来源：

JOURNAL OF GUIDANCE CONTROL AND DYNAMICS | 1989年 / 12卷 / 02期

关键词：

Computer Simulation - Control Systems; Linear - Mathematical Techniques--Difference Equations;

D O I：

10.2514/3.20398

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

An automatic controller for Space Shuttle Orbiter stationkeeping and formationkeeping is presented. The controller uses feed-forward control for precise stationkeeping at nonequilibrium set points and for efficient position maneuvers, and a discrete-time linear-quadratic feedback regulator for disturbance rejection. Design of the regulator emphasizes good limit-cycling performance in the presence of sensor noise and a control threshold nonlinearity. Results show that 20-ft precision can be achieved using current Orbiter sensors, and that 2-ft precision would be possible with enhanced sensors.

引用

页码：248 / 255

页数：8