Nonlinear output-transition control for nonminimum-phase systems: The VTOL example
© 2017 IEEE. Achieving the optimal output-transition control for nonlinear systems remains challenging and requires complex calculation. This paper investigates the use of a polynomial-based output-transition trajectory together with three different types of inversion-based feedforward for nonminimu...
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| Format: | Conference or Workshop Item |
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2018
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| Online Access: | https://repository.li.mahidol.ac.th/handle/123456789/42345 |
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| Institution: | Mahidol University |
| Summary: | © 2017 IEEE. Achieving the optimal output-transition control for nonlinear systems remains challenging and requires complex calculation. This paper investigates the use of a polynomial-based output-transition trajectory together with three different types of inversion-based feedforward for nonminimum-phase vertical take-off and landing (VTOL) aircraft. The necessity of pre-actuation and post-actuation is examined by comparing the input and output of the VTOL system obtained from these three nonlinear output-transition control methods. Based on simulation results, pre-actuation and post-actuation can be omitted but at the expense of the input magnitude and the smoothness of the output transition. This study offers alternative nonlinear output-transition control for nonminimum-phase systems when pre-actuation and/or post-actuation are not available. |
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