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Disturbance decoupled fault diagnosis for sensor fault of maglev suspension system

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Journal of Central South University 2013年第6期20卷 1545-1551页

作者：李云李杰张耿田文静 College of Mechatronics Engineering and Automation National University of Defense Technology

A disturbance decoupled fault diagnosis strategy is *** disturbance decoupled fault diagnosis is both robust to disturbances and sensitive to sensor faults of magnetic levitation control ***,a robust controller based on a novel disturbance observer is devised to improve the disturbance attenuation ability,which greatly enhances the robustness of the ***,a fault reconstruction technique with adaptive method is presented,along with a strict verification for guaranteeing the robustness of *** fault reconstruction technique provides an accurate sensor fault *** the results of simulation and experiments conducted on the CMS-04 maglev train,the integrated strategy is robust to model uncertainties of the system and the fault reconstruction algorithm is able to reconstruct the dynamic uncertain faults.

关键词： maglev system suspension control robust control disturbance observer tault reconstruction

Dynamic characteristics of a working platform supported by an AMG

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High Technology Letters 2008年第2期14卷 193-198页

作者：张钢 School of Mechatronics Engineering and Automation Shanghai UniversityShanghai 200072P.R.China

A coupled electromechanical dynamic model for a working platform supported by an active magneticguide(AMG)is set up according to the special stiffness and damping theory of maglev system and theunique vibration of the working platform for a machine *** dynamic characteristics of a workingplatform supported by an AMG are studied using different groups of control *** show thatthe dynamic characteristics of the platform system,such as critical vibration frequency,vibration modeand so on,can be improved by adjusting the control *** research offers theoretical supportfor ultra-high-speed and ultra-precise machine working platform designs,including the structure of plat-forms,the design of electromagnets,and the establishment of the control parameters.

关键词： working platform active magnetic guide (AMG) dynamic characteristics maglev system

Real Time Implementation of Series Expansion Based Digital Controller for Magnetic Levitation system

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Intelligent Control and Automation 2016年第4期7卷 110-128页

作者： Avadh Pati Vijay Kumar Verma Richa Negi Shyam Krishna Nagar Department of Electrical Engineering Motilal Nehru National Institute of Technology Allahabad India School of Electronics Engineering Kalinga Institute of Industrial Technology Bhubaneswar India Department of Electrical Engineering Indian Institute of Technology BHU Varanasi India

This paper addresses a digital controller for a real time magnetic levitation system using series expansion of pulse transfer function, which achieves desired closed loop response. The proposed digital controller designed, based on series expansion of pulse transfer function by solving a linear equation using the method of least squares, which improves the transient performance and step tracking capability of the compensated system. The designed algorithm used for the control input is not iterative, so the calculation is very fast. The proposed control scheme has successfully applied on maglev system and also validated through the simulation and hardware experimental results.

关键词： maglev system Least Squares Series Expansion Pulse Transfer Function Digital Controller

Updating method of a high-speed maglev guideway model based on wavelet transform

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Journal of Southeast University(English Edition) 2022年第2期38卷 171-177页

作者： Wang Xiaonong Huang Jingyu National maglev Transportation Engineering R&D Center Tongji UniversityShanghai201804China Key L aboratory of Road and Traffic Engineering of Ministry of Education Tongji UniversityShanghai201804China

The structure of a high-speed maglev guideway is taken as the research *** the aim of identifying the inconsistency of modal parameters between the simulation model and the actual model,and based on the 600 km/h high-speed maglev vehicle and the high-speed maglev test line,the arrangement of sensors and the vibration acceleration data collection of the 12.384 m concrete guideway were *** modal parameters were identified from the guideway response signal using wavelet transform,after which the wavelet ridge was extracted by using the maximum slope ***,the vibration modes and frequency parameters of the interaction vibration characteristics of the high-speed maglev guideway and 600 km/h maglev vehicle were *** updating objective function for the finite element model of the guideway was established,and the initial guideway finite element model was modified and updated by repeatedly iterating the *** doing so,the model structure of the high-speed maglev guideway was obtained,which is consistent with the actual *** accuracy of the updated guideway model in the calculation of the dynamic response was verified by combining this with the vehicle-guideway coupling dynamic model of the high-speed maglev system with 18 degrees of *** research results reveal that the model update method based on the wavelet transform and the maximum slope method has the characteristics of high accuracy and fast recognition *** can effectively obtain an accurate guideway model that ensures the correctness of the vehicle-guideway coupling dynamic analysis and calculation while meeting the parameters of the measured structure *** method is also suitable for updating other structural models of high-speed maglev systems.

关键词： maglev system guideway wavelet transform maximum slope method

Research of CNC Electromagnetic Levitation Height Self-tuning Quantization Scale Factor Fuzzy Control

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Research of CNC Electromagnetic Levitation Height Self-tunin...