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Stabilization of large space structures by linear reluctance actuators
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Biswas, Saroj K. Sendaula, Henry M. |
| Copyright Year | 1991 |
| Description | Application of magnetic forces are considered for stabilization of vibrations of flexible space structures. Three electromagnetic phenomena are studied, such as: (1) magnetic body force; (2) reluctance torque; and (3) magnetostriction, and their application is analyzed for stabilization of a beam. The magnetic body force actuator uses the force that exists between poles of magnets. The reluctance actuator is configured in such a way that the reluctance of the magnetic circuit will be minimum when the beam is straight. Any bending of the beam increases the reluctance and hence generates a restoring torque that reduces bending. The gain of the actuator is controlled by varying the magnetizing current. Since the energy density of a magnetic device is much higher compared to piezoelectric or thermal actuators, it is expected that the reluctance actuator will be more effective in controlling the structural vibrations. |
| File Size | 437187 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910012996 |
| Archival Resource Key | ark:/13960/t5s808s8j |
| Language | English |
| Publisher Date | 1991-03-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Design, Testing And Performance Actuators Reluctance Torque Vibration Damping Magnetostriction Flexible Spacecraft Structural Vibration Bending Piezoelectricity Spacecraft Stability Magnetic Circuits Large Space Structures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
