L1 adaptive controller design of a space system considering structural flexibility


1 K.N. Toosi university of technology

2 MSc, K.N. Toosi University, Department of Aerospace Engineering


One of the main challenges in the design of the flexible flying vehicle controller is large parametric variation in flight. Problems to control the vehicles arise due to long and slender body and disturbance forces and forces generated by moving control surfaces causing the properties aeroelastic in these vehicles. The effect of flying vehicle's elastic behavior appears as vibration and error creation in measurement sensors and due to the interaction of each components on the other, it will have undesired effects on control system. In this paper, taking into account the different conditions of flight, L1 adaptive control performance has been studied. The results show that L1 adaptive controller with guaranteed stability and robustness can satisfactory be controlled undesirable effects of low-frequency modes of structural in a short time and in the presence of dynamic uncertainties, such as unexpected structural failures, time-varying disturbances and uncertainties and time delay in actuators the designed controller have very desirable performance.


Main Subjects

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