scholarly journals ADAPTIVE CONTROL OF THE 1-DOF ACTIVE MAGNETIC BEARING

2017 ◽  
Vol 3 ◽  
pp. 188
Author(s):  
Sergei Loginov ◽  
Yuri Zhuravlyov ◽  
Yulia Domracheva ◽  
Dmitriy Fedorov
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
High Speed ◽  
Magnetic Bearing ◽  
Electric Machine ◽  
Electromechanical System ◽  
Active Magnetic Bearing ◽  
Adaptive Control System ◽  
Varying Parameters ◽  
Electromechanical Device

Active magnetic bearing is the electromechanical device allowing to suspend the rotor of the electric machine. Friction is eliminated and high speed of rotation can be achieved. However, the parameters of the electromechanical system may change during operation. Adaptive control system allows to maintain stability under varying parameters.

The Robust Control of Magnetic Suspension with Rapidly Changing of Rotor Speed

2009 ◽  
Vol 147-149 ◽  
pp. 302-307 ◽  
Author(s):  
Arkadiusz Mystkowski ◽  
Zdzisław Gosiewski
Keyword(s):  
Control System ◽  
Robust Control ◽  
High Speed ◽  
Controller Design ◽  
Angular Speed ◽  
Magnetic Bearing ◽  
Magnetic Suspension ◽  
Experimental Results ◽  
Active Magnetic Bearing ◽  
Robust Controller

An optimal robust vibration control of a rotor supported magnetically over a wide angular speed range is presented in the paper. The laboratory stand with the high speed rotor (max. 24000 rpm) was designed. The wide bandwidth controller with required gain, which is necessary to stabilize the structurally unstable and active magnetic bearing system was computed. For controller design, the weighting functions putted on the input and output signals were chosen. For control design, the dynamics of the rotor and uncertain parameters were considered. The optimized control system by minimization of the H norm putted on transient process of the system was presented. The robust controller was designed with considered asymmetrically magnetic bearings, signal limits and power amplifiers dynamic. The success of the robust control is demonstrated through computer simulations and experimental results. Matlab-Simulink was used for the numerical simulation. The experimental results show the effectiveness of the control system as good vibrations reducing and robustness of the designed controller in all dynamic states.

scholarly journals INDUCTIVE LINEAR DISPLACEMENT SENSOR IN ACTIVE MAGNETIC BEARING

2019 ◽  
Vol 3 ◽  
pp. 151
Author(s):  
Sergei Loginov ◽  
Dmitriy Fedorov ◽  
Igor Savrayev ◽  
Igor Plokhov ◽  
Andrey Hitrov ◽  
...  
Keyword(s):  
Control System ◽  
High Speed ◽  
High Reliability ◽  
Magnetic Bearing ◽  
Linear Displacement ◽  
Magnetic Bearings ◽  
Active Magnetic Bearing ◽  
Displacement Sensor ◽  
Main Trend ◽  
Active Magnetic Bearings

Active magnetic bearings are increasingly used in various fields of industry. The absence of mechanical contact makes it possible to use them in ultra-high-speed electric drives. The main trend of active magnetic bearings development is the improvement of the control system. The main problem of the control system is the displacement sensor (most of them has low accuracy and large interference). The sensor must have the following properties: simple in realization, high linearity of the characteristic, high sensitivity and noise immunity, high reliability. At the present time there is no sensor that satisfies all these conditions. Most manufacturers use various kinds of filters to get an accurate position signal. This increases the response time of the control system. Thus, problem of designing and modeling the position sensor, considered in the article is topical.

Application of Adaptive Control System in High Speed Railway Bridge Construction Control

2010 ◽  
Vol 163-167 ◽  
pp. 2751-2755
Author(s):  
Alan Jiang ◽  
Chang Jian Yao
Keyword(s):  
Adaptive Control ◽  
Control System ◽  
High Speed ◽  
Forecast Errors ◽  
Computer Simulation Model ◽  
Construction Technology ◽  
Adaptive Control System ◽  
Railway Bridge ◽  
Bridge Construction ◽  
High Speed Railway

Bridges monitor and control plays a important part in the bridge construction technology. Besides, It is the key factors of ensuring the bridge construction safety in the construction project and meeting design and construction code requirements. The Article takes a high-speed railway bridge as engineering background, and adaptive control system will be applied to the monitoring measurement. The Main Parameter of construction is proposed, which is based on the sensitivity analysis of design parameter in theory. According to take elastic modulus and volume weight of concrete as the main Parameters, identified and adjusted them by least square method, to forecast errors, analyze and adjust parameters. Using the adaptive control system to collect the data of displacement and stress in bridge construction.Calculate through the Computer simulation model, and obtain initialize height during construction, on this basis, guiding the construction and complete the construction of control successfully.

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