Aerospace and Mechanical Engineering
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Modeling of Coaxial Helicopter

Frequency Domain system identification:

  • Focus on system’s relevant frequency range.
  • Coherence function indicates if response is linear correlated to input.

Modeling Process

Figure: Frequency domain identification modeling process.

Rotor schematic State-space model

Figure: Rotor schematic (left). State-space model (right).

Extracted frequency responses

Figure: Extracted frequency responses to longitudinal input. Highlights phugoid and rotor/body couple mode.

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Last Modified: 2012-06-04 at 13:42:16 -- this is in International Standard Date and Time Notation