A5100762686- Magnetic Bearings and Levitation Dynamics
- Electromagnetic Launch and Propulsion Technology
- Adaptive Control of Nonlinear Systems
- Electric Motor Design and Analysis
- Advanced Sensor and Control Systems
- Advanced Algorithms and Applications
- Tribology and Lubrication Engineering
- Inertial Sensor and Navigation
- Industrial Technology and Control Systems
- Metallurgical and Alloy Processes
- Civil and Geotechnical Engineering Research
- Sensorless Control of Electric Motors
- Magnetic and Electromagnetic Effects
- Advanced Control Systems Optimization
- Physics of Superconductivity and Magnetism
- Electrical Contact Performance and Analysis
- Iterative Learning Control Systems
- Particle accelerators and beam dynamics
- Embedded Systems and FPGA Design
- Advanced Control Systems Design
- Wireless Power Transfer Systems
- Simulation and Modeling Applications
- Magnetic confinement fusion research
- Vibration Control and Rheological Fluids
- Neural Networks Stability and Synchronization
National University of Defense Technology
2016-2025
Gansu Agricultural University
2024
North China Electric Power University
2010-2023
Changchun University
2010-2020
Air Force Engineering University
2019-2020
China Tobacco
2020
Nanjing University of Posts and Telecommunications
2019
National Grid (United States)
2019
Shenyang University of Technology
2019
PLA Air Force Xi'an Flying College
2015
This paper addresses the active control of stationary self-excited vibration, which degrades stability levitation control, decreases ride comfort, and restricts construction cost maglev system. First, a minimum interaction model containing flexible bridge single unit is presented. Based on model, principle underlying vibration explored. It shows that property system root vibration. Consider energy may be absorbed by electromagnetic harvester (EEH), so technique applying it to proposed,...
The maglev train is a new type of guideway transportation for both long distance and urban applications in the 21 st century.Recent progress technology indicates probability widespread commercial application systems near future.However, some economic technical issues remain to be solved before application, vehicle-guideway coupled vibration problem most urgent that needs solved.In this article, problem, especially EMS system, presented divided into three main areas: stationary...
A decentralized proportional-integral-differential (PID) control structure has been always the first option for magnetic levitation systems due to its model-free nature as well simplicity. It is very challenging tune PID parameters each suspension point ensure that closed-loop system less sensitive uncertainties/disturbances. Even though, by a large number of experiments, reasonably good parameter set can be obtained levitate single given point, these are when changes or controller applied...
Abstract Input saturation must be taken into account for applying rapid reorientation in the large angle manoeuvre of a quadrotor. In this paper, backstepping-based inverse optimal attitude controller (BIOAC) is derived which has property maximum convergence rate sense control Lyapunov function (CLF) under input torque limitation. controller, backstepping technique used handling complexity introducing by unit quaternion representation quadrotor with four parameters. Moreover, approach...
The coupled resonance that occurs between a maglev vehicle and an elevated bridge is unique problem for electromagnetic suspension system when the suspended above without moving. This causes to vibrate in large amplitude, it significantly degrades ride comfort of train, needs be solved before commercial application system. In this paper, principle stationary vehicle–bridge investigated, shown levitation non-passive self-excited vibration first frequency approaches critical To eliminate...
Control of the maglev system is one most significant technologies train. The common proportion integration differentiation (PID) method, which has fixed control parameters, ignores non-linearity and uncertainty model in design process. In actual process, due to environmental changes interference, inherent parameters will drift significantly. traditional PID controller difficulty meeting requirements, have poor effect working environment. Therefore, a radial basis function (RBF)-PID designed...
Aiming at a number of disadvantages in the current normal-conductive electromagnetic suspension (EMS) system, particularly considerable energy consumption and high precision requirement for rail processing, this paper compared three types schemes, taking advantage superconducting wire, i.e., electrodynamic suspension, hybrid (HTS+EMS), HTS EMS. An magnetic experimental system was designed built on basis Bi-2223/Ag tape. A few concerns with respect to coils were discussed, including...
The controlled air-gap of the electromagnetic suspension maglev train is generally 8-10 mm, which makes effect vehicle-track dynamic coupling significant. It found that track irregularities especially step will make system fluctuate off setting air-gap. When situation even worse, gap beyond limit so electromagnet or supporting slide crashes with results in noise and poor ride comfort. By analyzing response module caused by step, it fluctuation rear point more significant than front point. In...
Superconducting (SC) electrodynamic suspension (EDS) has a wide application prospect due to the advantages of no active control, self-stability and large gap, especially in ultra-high speed maglev, rocket launching, Electromagnetic Aircraft Launching System other high fields. SC coils null-flux Ground Coils which are primary secondary windings respectively applied typical EDS system, that ground provide levitation guidance force. The calculation electromagnetic forces been extensively...
Due to the advantages of no active control, self-stability, large clearance, and small self-weight, electrodynamic suspension system has a wide range applications in high-speed fields such as ultra-high speed maglev transportation, electromagnetic ejection rocket propulsion. Based on dynamic circuit theory, Neumann equation, virtual displacement method, force calculation model null-flux coil superconducting is obtained, window algorithm designed accelerate speed. Co-simulation platform built...
In this study, we investigate a nonlinear control scheme to solve the practical issues such as inner coupling, load uncertainties, and model errors in suspension of maglev train. By considering levitation module an integral controlled object, mathematical is obtained. The inverse system method adopted deal with coupling module. way, divided into two linear decoupled subsystems. Then, quadratic regulator (LQR) theory employed for achieving steady suspension. Besides, disturbance observer...
The research of ground high speed systems has been popular, especially after the announcement Hyperloop concept, and analysis suspension structure is critical for design system. This paper focuses on a plate type electrodynamic (EDS) working principle proposed whole system with functions levitation, guidance propulsion presented, researched EDS composed permanent magnets (or superconducting magnets) non-ferromagnetic conductive plates. Levitation are achieved by forces generated through...
This paper presents a half bogie model of magnetic levitation systems, which can capture the mechanical coupling between two suspension points. Based on model, model-guided state feedback controller is designed to stabilize nominal model. Anew extended observer using measured data proposed estimate unknown system as well modeling uncertainties, disturbances, and coupling. leads an active disturbance rejection that cancel effect disturbances. By incorporating data-driven with appropriate...