Adaptive complete suppression of imbalance vibration in AMB systems using gain phase modifier

Fang, Jiancheng; Xu, Xiangbo; Tang, Jian; Liu, Hu

doi:10.1016/j.jsv.2013.07.004

Cited by 35 publications

(17 citation statements)

References 27 publications

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“…Changes to and errors in amplifier parameters would directly affect the accuracy of compensation [11]. In addition, the low-pass characteristic is difficult to measure or estimate precisely, because it is nonlinear and varies with time [12,13]. A gain-phase modifier was proposed to achieve adaptive complete suppression of the unbalance vibration by tuning the gain and phase of the feed-forward part, which are adaptively unaffected by the low-pass characteristic of the power amplifier [14,15].…”

Section: Introductionmentioning

confidence: 99%

Vibration Reduction of an Overhung Rotor Supported by an Active Magnetic Bearing Using a Decoupling Control System

Numanoy

Srisertpol

2019

Machines

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Overhung rotors are important for use in industrial turbo-machines. The effects of a lateral force can increase as a result of the rotor weight, misalignment, or the operating speed of the suspension system for which the rotor is carrying a transmission connection. In this paper, the reduction of vibration in supported lateral directions by varying control is discussed in a radial active magnetic bearing system (AMBS). An experimental test was conducted on the orbital response of an overhung rotor supported by an AMBS, to provide an alternative for improving precision. To simplify the system design, decoupling was achieved using a PID controller and harmonic disturbance compensator (HDC), which improved the rotating performance of an overhung active magnetic bearing (AMB) rotor system, using a frequency response function (FRF) approach and a description of the overhung rotor during normal operational conditions at unique frequencies. The experimental results show that the precision rotation, due to harmonic excitation of the shaft orbit, can be removed in real time using compensation signals using trigonometry. The compensation criteria for the changed run-up and coast-down consistently helped to maintain the rotational center in a central position. A reduction of up to 55% in vibration amplitude on average was achieved under appropriate conditions, and the significance of the overhung rotor symptoms faults were investigated.

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Section: Introductionmentioning

confidence: 99%

Vibration Reduction of an Overhung Rotor Supported by an Active Magnetic Bearing Using a Decoupling Control System

Numanoy

Srisertpol

2019

Machines

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“…Since power amplifier plays a vital role in control system, Ye et al (2006), Townsend et al (2012), Fang and Ren (2012), Wei and Xiang (2012) and Fang et al (2013a) focus on how to remove attenuation and delay in power amplifier. On the basis of phase-lead filter, Ye et al (2006) adopts repeated control method to estimate the power amplifier parameters which vary periodically, and the power amplifier is compensated by the estimated parameters.…”

Section: Introductionmentioning

confidence: 99%

Research on method for adaptive imbalance vibration control for rotor of variable-speed mscmg with active-passive magnetic bearings

Cui

Fang

et al. 2016

Journal of Vibration and Control

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Imbalance vibration control for rotor is the main factor affecting attitude control performance for satellite using magnetically suspended control moment gyro (MSCMG). The method for adaptive imbalance vibration control for the rotor of variable-speed MSCMG with active-passive magnetic bearings is investigated in this paper. Firstly, on the basis of feedforward compensation, a rotor model for the imbalance vibration of variable-speed MSCMG with active-passive magnetic bearings is built, and the main factor affecting imbalance vibration compensation is also analyzed. Then, power amplifier parameter modifier with control switches is designed to eliminate the effects of time-varying parameters on the imbalance vibration compensation precision. The adaptive imbalance vibration control based on this modifier not only has high compensation precision, but also can control the frequency of parameter adjustment according to the compensation precision. Besides, since the passive magnetic bearing displacement stiffness of the rotor of variable-speed MSCMG with active-passive magnetic bearings cannot be obtained accurately, displacement stiffness modifier is employed. Finally, stability analysis is made on the imbalance vibration control system, and the range of rotation speed to ensure system stability is derived. Simulation results show that, imbalance vibration control method proposed in this paper can suppress the imbalance vibration of the rotor of variable-speed MSCMG with active-passive magnetic bearings effectively and has high precision.

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“…Motor with magnetic bearings has been widely used in high-speed drive kingdoms [3][4][5], but it has a series of disadvantages, such as: higher magnetic suspensions cost, difficulty to over speed, [6][7][8]. Based on the comparability of stator structure between magnetic bearing and conventional AC motor, the bearingless motor is proposed [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…About the unbalance vibration problem of magnetic bearing motor, a variety of control methods are proposed, such as notch filter, adaptive feedforward and feedback compensation, robust control, and sliding mode control [3][4][5][6][7][8]. But, about the unbalance vibration control of bearingless motor, research literatures are very rare, the existing researchs are limited to bearingless synchronous motor, and mainly concentrated in the compensation method of unbalanced displacement, and the compensation purpose is to force the rotor to rotate around its inertial axis [13][14][15], and then, still cannot meet the requirements of suspension control precision in some application fields, such as high speed grinder drive field.…”

Section: Introductionmentioning

confidence: 99%

Compensation and Control of Bearingless Induction Motor’s Unbalanced Exciting Force Based on LMS Filter

Bu¹,

Lu²,

Zhang³

et al. 2016

IJCA

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Adaptive complete suppression of imbalance vibration in AMB systems using gain phase modifier

Cited by 35 publications

References 27 publications

Vibration Reduction of an Overhung Rotor Supported by an Active Magnetic Bearing Using a Decoupling Control System

Vibration Reduction of an Overhung Rotor Supported by an Active Magnetic Bearing Using a Decoupling Control System

Research on method for adaptive imbalance vibration control for rotor of variable-speed mscmg with active-passive magnetic bearings

Compensation and Control of Bearingless Induction Motor’s Unbalanced Exciting Force Based on LMS Filter

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