DESIGN METHOD FOR UNDISTURBED SWITCHING OF LINEAR CONTROLLERS
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United States of America Patent
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Issued Date -
Dec 22, 2022
app pub date -
Oct 30, 2020
filing date -
Oct 30, 2020
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Abstract
A design method for undisturbed switching of linear controllers is provided for solving the problem of sudden system response change or an unstable control circuit caused by switching of multiple linear controllers, in which the linear controllers include proportional-integral-derivative (PID), linear-quadratic-Gaussian (LQG), linear active disturbance rejection control (LADRC), H∞, model reference adaptive control (MRAC), and open-loop controllers. Firstly, differentials tbr outputs of the controllers are found, then through controller decision, a controller is selected to be connected to a closed-loop control circuit, and a differential term of the controller connected to the closed-loop control circuit is integrated through a common integrator, thereby ensuring smooth controller switching. The design method has a simple structure and good versatility, is operable, and can be easily applied to various actual control systems without requiring parameter adjustment.
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