This project is a homework project for the course: Modern Flight Control Systems, Dr. Bei Lu, Spring, 2021. Based on Simulink, this project established a six-degree-of-freedom nonlinear model of the aircraft and balanced it to obtain a stable flight state. In this state, linearization and dynamic stability analysis of the model were carried out. Finally, the differences between the linearized model and the nonlinear model were compared.
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load "sheet.mat".
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check the model: the trim mode should be connected. Then you can use the trim function in the shell to find the desired stable state. You can use
[x,u,y] = trim('unlinearized',xi,ui,yi,[],[],[])or you want to set more limits on state, use
[x,u,y] = trim('unlinearized',xi,ui,yi,[],[],[2,3,4,5,6,7,8,9])A recommended state has been set in xi, yi, ui.
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check the model: the test mode should be connected.
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run the model and you can see the result in graph.
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You can change the input as you like in test mode.
- Matlab2020a or up version is required.
- There is also a linearized model for you to compare.