Comprehensive System Identification of Ducted Fan UAVs - Cal Poly
Comprehensive System Identification of Ducted Fan UAVs - Cal Poly
Comprehensive System Identification of Ducted Fan UAVs - Cal Poly
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effects from the rotating inertia. Ultimately this made for the coupling derivatives in themodel to become zero as well.The control derivatives were identified as shown in Table 3.9.Table 3.9 - MAV Identified Control DerivativesCOUP02Derivativ e Param Value CR Bound C.R. (%) Insens.(%)X lon -0.2841 0.01692 5.955 2.058M lon -0.2343 0.01103 4.705 2.149Y lat 0.2495 0.01876 7.519 2.544L lat -0.1789 0.01056 5.902 2.614ø lat 0.06767 * ...... ...... ......ø lon 0.06767 4.599E-03 6.796 3.272* Fixed derivativ e tied to a free derivativ eø lat = 1.000E+00* ø lon ( COUP02 )Figure 3.11 shows the identified model’s roll and lateral acceleration responses for theroll sweep.4020p/latMagnitude(DB)200ay/latMagnitude(DB)0-20-20-40-40-60150100500-50-100-150Phase (Deg)100500-50-100-150-200Phase (Deg)0.80.61 Coherence0.80.61 Coherence0.40.20.1 1 10 100Frequency (Rad/Sec)Flight resultsCOUP02 - <strong>Identification</strong> Results0.40.20.1 1 10Frequency (Rad/Sec)Figure 3.11 – MAV Lateral Acceleration and Roll Rate Response to Roll Input- 40 -