Robust observer-based optimal linear quadratic tracker for five-degree-of-freedom sampled-data active magnetic bearing system

2018 ◽  
Vol 49 (6) ◽  
pp. 1273-1299 ◽  
Author(s):  
Jason Sheng Hong Tsai ◽  
Te Jen Su ◽  
Jui-Chuan Cheng ◽  
Yun-You Lin ◽  
Van-Nam Giap ◽  
...  
Keyword(s):  
Magnetic Bearing ◽  
Degree Of Freedom ◽  
Active Magnetic Bearing ◽  
Sampled Data ◽  
Linear Quadratic ◽  
Robust Observer ◽  
Optimal Linear ◽  
Bearing System

Optimal Linear Quadratic Stabilization of a Magnetic Bearing System

2021 ◽  
pp. 145-154
Author(s):  
Abdelileh Mabrouk ◽  
Olfa Ksentini ◽  
Nabih Feki ◽  
Mohamed Slim Abbes ◽  
Mohamed Haddar
Keyword(s):  
Magnetic Bearing ◽  
Linear Quadratic ◽  
Quadratic Stabilization ◽  
Optimal Linear ◽  
Bearing System

Dynamic Analysis of Flexible Rotor Suspended by Active Magnetic Bearings With LQR Controller

2018 ◽  
Author(s):  
Yixin Su ◽  
Yanhui Ma ◽  
Qian Shi ◽  
Suyuan Yu
Keyword(s):  
Dynamic Characteristics ◽  
Beam Theory ◽  
Magnetic Bearing ◽  
Active Magnetic Bearing ◽  
Flexible Rotor ◽  
Linear Quadratic ◽  
State Response ◽  
Lagrange’S Equation ◽  
Linear Quadratic Regulation ◽  
Lqr Controller

Dynamic characteristics of active magnetic bearing (AMB)-flexible rotor system are closely related to control law. To analyze dynamic characteristics of flexible rotor suspended by AMBs with linear quadratic regulation (LQR) controller, a simple and effective method based on numerical calculation of unbalanced response is proposed in this article. The model of flexible rotor is established based upon Euler-Bernoulli beam theory and Lagrange’s equation. Disc on the rotor and its Gyro effect are taken into account. LQR controller based on error and its derivative is developed to control electromagnetic force of AMB at each degree of freedom (DOF) in real time. Under the unbalanced exciting force, the steady-state response and transient response in time domain of each node of flexible rotor at 0–4000 rad/s are calculated numerically. The critical speeds of rotor are obtained by identification method quickly and easily.

Sign in / Sign up

Export Citation Format

Share Document