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Design and analysis of the st7 disturbance reduction system (drs) spacecraft controller
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Maghami, P. G. Markley, F. L. Houghton, M. B. Dennehy, C. J. |
| Copyright Year | 2003 |
| Description | The Space Technology 7 experiment will perform an on-orbit system-level validation of two specific Disturbance Reduction System technologies: a gravitational reference sensor employing a free-floating test mass and a set of micronewton colloidal thrusters. The Disturbance Reduction System is designed to maintain a spacecraft's position with respect to the free-floating test mass to less than 10 nm/square root of Hz, over the frequency range 10(exp -3) Hz to 10(exp -2) Hz. This paper presents the design and analysis of the coupled drag-free and attitude control system that closes the loop between the gravitational reference sensor and the micronewton thrusters while incorporating star tracker data at low frequencies. The effects of actuation and measurement noise and disturbances on the spacecraft and test masses are evaluated in a seven-degree-of-freedom planar model incorporating two translational and one rotational degrees of freedom for the spacecraft and two translational degrees of freedom for each test mass. |
| File Size | 590489 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030025662 |
| Archival Resource Key | ark:/13960/t12p02x3z |
| Language | English |
| Publisher Date | 2003-01-02 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Controllers Position Location Degrees of Freedom Attitude Control Drag Reduction Control Systems Design Star Trackers Spacecraft Control Space Technology Experiments Design Analysis Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
