Multiple input design for real-time parameter estimation in the frequency domain
Summary (1 min read)
1. INTRODUCTION
- The next section describes the multiple input design procedure.
- Following this, real-time parameter estimation results from applying the designed inputs to the F-15 ACTIVE simulation are presented and discussed.
3. RESULTS
- For the linearized 1ateraYdirectional dynamics of the F-15 ACTIVE aircraft, the state vector x and input vector u in@.
- The values of the parameters in the model that were used to generate the simulated data are given in column 2 of Table 1 .
Fig. 2. F-15 ACTIVE Aircraft
- The multiple input design for the F-15 ACTIVE aircraft laterddirectional dynamics includes four control effectors: aileron, rudder, differential canard, and differential stabilator.
- These inputs were designed using a flat power spectrum with T' 15 sec.
- All of the designed inputs achieved an extremely low relative peak factor close to 1.
- Real-time parameter estimation in the frequency domain (Morelli, 2000) was used to estimate the parameters.
- For output signal-to-noise ratio equal to 10, the input amplitudes were 0.24 deg, and the mean parameter estimate error was 2.7 percent.
Did you find this useful? Give us your feedback
Citations
127 citations
122 citations
91 citations
87 citations
86 citations
References
2,837 citations
1,524 citations
Additional excerpts
...~x x t e dt j t T ω ω 1 6 1 6 I0 (5)...
[...]
724 citations
"Multiple input design for real-time..." refers background in this paper
...The task is then to identify accurate linear model parameter estimates from measured data in real time, so that the adaptive control logic can make the necessary 2 American Institute of Aeronautics and Astronautics changes to the control law to achieve stability and performance goals....
[...]
396 citations
Additional excerpts
...T T m m 1 1 2 2 1 6 1 6 1 6 1 6 1 6 1 6 M M (14)...
[...]
220 citations
"Multiple input design for real-time..." refers methods in this paper
...Real-time parameter estimation in the frequency domain (Morelli, 2000) was used to estimate the dynamic model parameters....
[...]
...Recent work has indicated that real-time parameter estimation for a i r d dynamic models can be done effectively using a recursive c h i p Z transform for a selected frequency band, then employing equation-error parameter estimation in the frequency domain (Morelli, 2000)....
[...]