the reference answer GPT ᴼ ᴾ ᴱ ᴺ ᴬ ᴵ < br / > LMI toolbox to solve the robust controller when part of the zero solution is more common. This is usually due to the existence of some redundant degrees of freedom in the designed controller structure, resulting in the inability to eliminate some zero degrees of freedom, resulting in a zero solution.
The solution to this problem is to try to adjust the design of the controller to eliminate the redundant degrees of freedom. To be specific, try the following:
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Revisit the controller structure and consider if there are any excess control degrees of freedom. Try to remove some degrees of freedom, if any, or couple them with others.
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Adjust controller parameters. Sometimes it is possible to eliminate the zero solution by fine-tuning the controller parameters.
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Consider introducing additional constraints. For example, you can consider adding constraints on performance indicators to ensure that the controller's performance meets the requirements.
It should be noted that due to the complex design of robust controllers, it may require some professional knowledge and experience to solve the problem of partial zero solutions. It is suggested that more attempts and practices should be made in solving problems, and in-depth study should be carried out in combination with relevant literature and materials.
