Frequency Domain Quasi-Maximum Likelihood Identification of Low Order Aeroservoelastic Models from Flight-Test Data

Background and Motivation
- Low Order Equivalent System (LOES)
- From handling qualities analysis
- Traditionally simplifying complex control law and plant
- More easily understood form
- Extend LOES to a complex model due to aeroelasticity
- Maximum likelihood (Filter Error) System Identification
- Z = H_loes (U + W) + V
- There are a lot of parameters
- System identification usually simplifies by assuming a value
- Output Error and Equation Error
- Results in biased estimates of the parameters
- We are proposing a new method to solving this problem