Bipolar magnetic actuators and approaches for their design

Details Bipolar magnetic actuators and approaches for their design Bipolar magnetic actuators and approaches for their design

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.524..209r&link_type=abstract

In: Proceedings of the 10th European Space Mechanisms and Tribology Symposium, 24-26 September 2003, San Sebastián, Spain. Compi

Computer Science

Performance

Actuators

Scientific paper

Starting from the generic requirements for instrument locking during launch, piezoelectric, magnetic and other actuators have been studied in detail. Bipolar magnetic actuators are considered to have a high potential for such applications with a typically required displacement of 1 to 3 mm and forces between 5 and 60 N. After functional performance and reliability, the mass of the actuator is the third most important criterion for space applications and leads to the trend of miniaturisation. In this context, the use of permanent magnetic materials as well as different working principles of bipolar magnets have been investigated. Two prototypes of such miniaturised bipolar actuators for locking purposes on satellites are presented, which show a very good force-to-weight ratio and need power only during switching between the two stable actuator rest positions.

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