Electromagnetic Actuators.
Abstract
An electromagnetic actuator was configured, designed and constructed, as a direct replacement for the PZT devices now being used in deformable mirrors. The subject actuator has a stroke of plus or minus 1.5 wavelength at 10.6 micrometers, and is complete with a matching amplifier so that it can readily interface into existing equipment. A magnetic circuit of Hyperco-50 iron, two BeCu flexures, and a tungsten push rod are used to construct an actuator with the required characteristics. Two amplifiers, one a linear device and the other a switching amplifier, are also described. During the program, the device was assembled and tested, and when several structural shortcomings were observed, the push rod threads were reworked to provide additional integrity. The actuator test results are described including test results on both amplifiers. These test results show that the device was installed in the test cell and the full output force was placed on the push rod. Performance then deteriorated as the threads degraded. Test results after the thread rework indicated that the device is capable of stated performance.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1981
- Accession Number
- ADA096095
Entities
People
- S. Adelman