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Attitude and Altitude Tracking of Hexacopter via LQR with Integral Action
Date
2017-06-16
Author
Suicmez, Emre Can
Kutay, Ali Türker
Metadata
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Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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A controller is designed for hexacopter platform to achieve accurate tracking of altitude and attitude commands under the influence of severe disturbances. The main aim is designing a controller that can be tuned easily to satisfy desired performance requirements. For this purpose, multi-variable control method LQR is combined with PID structure which provides valuable physical insight in tuning process. Integral states are added to the system dynamics to have PID structure. Command generator is used to have trajectory independent optimal gain matrix which is advantageous for real time application. Time domain requirements are satisfied by tuning state and input weight matrices(Q and R) systematically. By this way, it is also possible to tune the controller for hexacopter platforms with different parameters(mass, inertia, etc.) without much effort. Controller performance is analyzed by using nonlinear dynamic model which includes a basic drag model, disturbance effects, actuator and sensor dynamics. Tracking performance and disturbance rejection properties are satisfactory according to numerical results. Controller structure is suitable for real time implementation with the help of simplified tuning process and a hexacopter platform is under construction for experimental verification.
Subject Keywords
Hexacopter
,
Tracking Control
,
LQR
,
Tuning
,
Integral Action
,
PID
,
Dynamic Model
,
Disturbance Rejection
URI
https://hdl.handle.net/11511/55800
Conference Name
International Conference on Unmanned Aircraft Systems (ICUAS)
Collections
Department of Aerospace Engineering, Conference / Seminar
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E. C. Suicmez and A. T. Kutay, “Attitude and Altitude Tracking of Hexacopter via LQR with Integral Action,” presented at the International Conference on Unmanned Aircraft Systems (ICUAS), Miami, FL, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55800.