System integration and control design of a maglev platform for space vibration isolation

Gong, Zhaopei; Yue, Honghao; Gao, Haibo; Liu, Rongqiang; Deng, Zongquan; Lu, Yaojuan

doi:10.1177/1077546319836892

Cited by 25 publications

(10 citation statements)

References 28 publications

(27 reference statements)

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“…The floater is equipped with six one-axis gyros (three on the floater and three on the stator) and six three-axis accelerometers [22]. The relative position between the floater and the stator is obtained by four two-axis PSD array (Position sensitive device) [23]. A mathematical model of the actuator and the motion equation of MVIP will be described in Section 2.2.…”

Section: System Descriptionmentioning

confidence: 99%

Payload-agnostic Decoupling and Hybrid Vibration Isolation Control for a Maglev Platform with Redundant Actuation

Gong,

Ding,

et al. 2020

Preprint

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Payload-specific vibration control may be suitable for a particular task but lacks generality and transferability required for adapting to the various payload. Self-decoupling and robust vibration control are the crucial problem to achieve payload-agnostic vibration control. However, there are problems still unsolved.In this article, we present a maglev vibration isolation platform (MVIP), which aims to attenuate vibration in payload-agnostic task under dynamic environment. Since efforts trying to suppress disturbance will encounter inevitable coupling problems, we analyzed the reasons resulting in it and proposed unique and effective solutions.To achieve payload-agnostic vibration control, we proposed a new control strategy, which is the main contribution of this article. It consists of self-construct radial basis function neural network inversion (SRBFNNI) decoupling scheme and hybrid adaptive feed-forward internal model control (HAFIMC). The former one enables the MVIP creating a self inverse model with little prior knowledge and achieving self-decoupling. For the unique structure of MVIP, the vibration control problem is stated and addressed by the proposed HAFIMC, which utilizes the adaptive part to deal with the periodical disturbance and the internal mode part to deal with the stability.

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Section: System Descriptionmentioning

confidence: 99%

Payload-agnostic Decoupling and Hybrid Vibration Isolation Control for a Maglev Platform with Redundant Actuation

Gong,

Ding,

et al. 2020

Preprint

Self Cite

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“…The electromagnetic actuator has the advantages of large stroke, high resolution, high energy density, and so on. Without physical contact, the vibration of the base cannot be directly transmitted to the object, which is an effective approach to the isolation of micro-vibration in space [ 11 , 12 , 13 ]. It restricts the performance improvement for the vibration isolation platforms with multiple single DOF electromagnetic actuators due to the large size and mass, complex structure and control system, difficulty to miniaturize and compact [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a 2-DOF Electromagnetic Actuator with an Improved Halbach Array for the Magnetic Suspension Platform

Yang

Zhao

et al. 2022

Sensors

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For large bearing capacity and low current consumption of the magnetic suspension platform, a 2-DOF electromagnetic actuator with a new structure of halbach array is proposed to improve driving force coefficients. The structure and the working principle are introduced. An accurate sub domain model of the new structure is established to accurately and rapidly calculate the magnetic field distribution for obtaining the parameters and performance of the electromagnetic actuators. The analytical model results are verified by the finite element method. The force/torque model of the magnetic suspension platform is established based on the proposed 2-DOF electromagnetic actuator. Three position-sensitive detectors and six accelerometers are applied to perceive in real time the posture and vibration acceleration of the platform, respectively. Their hardware information is introduced and measurement models are established based on the layout. Finally, the electromagnetic characteristics of the proposed actuator are investigated and compared with the conventional counterpart by finite element analysis. The results show that the average magnetic field, 0.432T, horizontal and vertical force coefficient, 92.3 N/A and 30.95 N/A, and torque in x and z direction, 3.61 N·m and 8.49 N·m, of the proposed actuator are larger than those of the conventional one.

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“…On the other hand, the principle of an active isolation system for vibration is safe with respect to this type of difficulty. Recently, the use of active microvibration isolation technology to isolate disturbances has received adequate attention in Hi-tech industries [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Vibration Isolation System with Kalman Filter Estimated Acceleration Feedback: An Approach of Negative Stiffness Control

et al. 2021

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This paper presents the isolation of vibration through the acceleration feedback of the Kalman filter. In this paper, vibration isolation was analyzed both analytically and experimentally through the estimation of the Kalman filter (KF). A negative stiffness mechanism was used to reduce the level of vibration for the developed dynamic system. The technique of negative stiffness can provide stiffness of infinite level to low stiffness as well as disturbance generated by the ground vibration directly. The performance of an isolation system through a mechanism of negative stiffness was improved by the addition of acceleration feedback. Acceleration was measured using a microelectromechanical (MEMS) type accelerometer instead of traditional servo type accelerometers due to lower cost. However, the output of a microelectromechanical (MEMS) type accelerometer is usually noisy. To avoid this difficulty, an acceleration that was estimated by a Kalman filter was considered in the acceleration feedback instead of directly measured acceleration. The dynamic behaviors of the system were compared for both the Kalman-filtered acceleration and the directly measured acceleration feedback. It is observed that the former has a significant effect on the improvement of the characteristics of the vibration isolation systems than later.

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System integration and control design of a maglev platform for space vibration isolation

Cited by 25 publications

References 28 publications

Payload-agnostic Decoupling and Hybrid Vibration Isolation Control for a Maglev Platform with Redundant Actuation

Payload-agnostic Decoupling and Hybrid Vibration Isolation Control for a Maglev Platform with Redundant Actuation

Design and Analysis of a 2-DOF Electromagnetic Actuator with an Improved Halbach Array for the Magnetic Suspension Platform

Vibration Isolation System with Kalman Filter Estimated Acceleration Feedback: An Approach of Negative Stiffness Control

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