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Design, dynamic modelling and experimental validation of a 2DOF flexible antenna sensor

Author

Listed:
  • Claudia F. Castillo
  • Seref Naci Engin
  • Vicente Feliu Batlle

Abstract

A two-degree-of-freedom flexible antenna sensor platform was designed to physically simulate the ability of a robotic arm, which rapidly reorients and targets itself towards specific surfaces from different approachable angles. An accurate antenna model involves non-linear expressions that represent the system dynamics. Therefore, a comprehensive study along with experimental work has been carried out in order to achieve accurate system identification and validate the dynamic model. The model developed has proven useful in controlling the antenna tip, minimising the effects of the non-linear flexural dynamics and the Coulomb friction. The system was driven by servo motors. Algebraic controllers were developed for the antenna tip to track the reference trajectory. The platform system used encoders to measure the joint angles and a loadcell sensor to obtain the flexible link tip position. To validate the sensory information, the results obtained by the integrated sensors were compared to that of an external camera system.

Suggested Citation

  • Claudia F. Castillo & Seref Naci Engin & Vicente Feliu Batlle, 2014. "Design, dynamic modelling and experimental validation of a 2DOF flexible antenna sensor," International Journal of Systems Science, Taylor & Francis Journals, vol. 45(4), pages 714-727, April.
    • Handle: RePEc:taf:tsysxx:v:45:y:2014:i:4:p:714-727
    DOI: 10.1080/00207721.2013.819948
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