The need for rotary position knowledge is common to applications across all industries. Many solutions exist but vary in accuracy, resolution and reliability. Selection of the appropriate device is driven by these characteristics, depending on the needs of the application and its operating environments. The resolver is an electromagnetic position feedback device known for high reliability even in harsh conditions, making it desirable for extreme applications such as aerospace and defense. However, the complexity of its windings and the accompanying magnetics requires special treatment in modeling and analysis to accurately represent the device and its failure modes. Such specialized models are not common and the methods used to generate those that do exist are not well documented. This work aims to fill this gap by providing methods for modeling these devices. A finite element model was generated and analyzed in both nominal operation and with faults injected. In both states the simulated data showed a general trend of increasing angular error as the injected fault increased, in agreement with expected behaviors based on known resolver characteristics and engineering data. This work provides a unique contribution to existing capabilities and has already been used to support multiple space programs. Further work such as analysis of other failure modes, can provide even more detailed insight as well as cost- and time-saving support to future programs.
|Commitee:||Ahmed, Aftab, Kwon, Seok-Chul|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 58/05M(E), Masters Abstracts International|
|Subjects:||Engineering, Electrical engineering|
|Keywords:||Electromagnetic, Resolver, Sensing|
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