State-feedback decoupling control of 5-DOF magnetic bearings based on α-order inverse system
| Autor: | Meiqian Lu, Xin Cheng, Shuai Deng, Bo Wang, Baixin Cheng, Rougang Zhou |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0209 industrial biotechnology
Inverse system Computer science Mechanical Engineering Internal model Magnetic bearing 02 engineering and technology 021001 nanoscience & nanotechnology Rigid body dynamics Computer Science Applications law.invention Nonlinear system 020901 industrial engineering & automation Control and Systems Engineering Control theory Linearization law Electrical and Electronic Engineering Helicopter rotor 0210 nano-technology Decoupling (electronics) |
| Zdroj: | Mechatronics. 68:102358 |
| ISSN: | 0957-4158 |
| DOI: | 10.1016/j.mechatronics.2020.102358 |
| Popis: | In the face of magnetic bearing rotor system multivariable, nonlinear, strong coupling control problems, a novel control decoupling method based on inverse system state feedback decoupling theory for the five degree of freedom of active magnetic bearing is presented. It solved the problem of ignoring the limitation of control parameters in conventional control methods. In this paper, the rigid body dynamics model of magnetic suspension rotor is established and the linearization is carried out. In this study, a decoupling pseudo-linear system is constituted by cascading the α-order inverse system based on the state-feedback with the original system. Moreover, in order to improve the robustness of the whole system and reject the influence of the un-modeled dynamics, the internal model controller is designed to synthesize the whole system. Both simulations and experiments demonstrate the effectiveness in decoupling of magnetically-levitated rotor system, and the disturbance rejection of proposed control scheme can be enhanced compared with un-decoupled control schemes. |
| Databáze: | OpenAIRE |
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