Fault Diagnosis for Suspension Signal of Maglev Vehicle Based on Mathematical Model

2012 ◽  
Vol 190-191 ◽  
pp. 987-992 ◽  
Author(s):  
Ying Pu Cui ◽  
Long Hua She ◽  
Xiao Long Li ◽  
A Ming Hao
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Fault Diagnosis ◽  
System Model ◽  
Maglev Vehicle ◽  
Suspension Control ◽  
Diagnosis Method ◽  
Real Value ◽  
Control System Model

Firstly, build the suspension-control-system model under the condition of elastic guideway, and design the controller. Secondly, design the Kalman forecaster based on model, and diagnose the fault by comparing forecasted value with real value. Finally, verify the effectiveness of this fault diagnosis method for suspension signal by simulation.

scholarly journals Decoupling Suspension Controller Based on Magnetic Flux Feedback

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Wenqing Zhang ◽  
Jie Li ◽  
Kun Zhang ◽  
Peng Cui
Keyword(s):  
Control System ◽  
Magnetic Flux ◽  
Feedback Linearization ◽  
Magnetic Suspension ◽  
System Model ◽  
Decoupling Method ◽  
Output State ◽  
Suspension Control ◽  
Multiple Input ◽  
Control System Model

The suspension module control system model has been established based on MIMO (multiple input and multiple output) state feedback linearization. We have completed decoupling between double suspension points, and the new decoupling method has been applied to CMS04 magnetic suspension vehicle in national mid-low-speed maglev experiment field of Tangshan city in China. Double suspension system model is very accurate for investigating stability property of maglev control system. When magnetic flux signal is taken back to the suspension control system, the suspension module’s antijamming capacity for resisting suspension load variety has been proved. Also, the external force interference has been enhanced. As a result, the robustness and stability properties of double-electromagnet suspension control system have been enhanced.

scholarly journals Decoupling Suspension Controller Based on Magnetic Flux Feedback

2013 ◽  
Vol 709 ◽  
pp. 462-469 ◽  
Author(s):  
Wen Qing Zhang ◽  
Jie Li ◽  
Kun Zhang ◽  
Peng Cui
Keyword(s):  
Control System ◽  
Magnetic Flux ◽  
Feedback Linearization ◽  
Control Algorithm ◽  
State Feedback ◽  
Magnetic Suspension ◽  
System Model ◽  
Suspension Control ◽  
Control System Model ◽  
And Control

Based on MIMO state feedback linearization, the suspension module control system model had been established, and it completed decoupling between double suspension points. Double-suspension system model is very accuracy for investigating stability property and control algorithm of suspension control system. When magnetic flux signal is taken back to control system, suspension modules antijamming characteristics for resisting suspension load variety and external force interference has been enhanced. Some experiments had been done on CMS04 magnetic suspension vehicle in national mid-low speed maglev experiment field of Tangshan city in China. Therefore, the stable property of double-electromagnet suspension control system has been enhanced.

Modeling and Simulation of Improved Vector Control System for PMSM

2014 ◽  
Vol 548-549 ◽  
pp. 819-823
Author(s):  
Xi Juan Wang ◽  
Tao Zhou ◽  
Jing Xiao Feng ◽  
Yu Peng Pei
Keyword(s):  
Control System ◽  
Control Theory ◽  
Modeling And Simulation ◽  
Vector Control ◽  
System Model ◽  
Excellent Performance ◽  
Matlab Simulink ◽  
Ac Motor ◽  
Control System Model ◽  
Vector Control System

In the AC control system, vector control theory is very popular as it makes the AC motor achieve the performance as perfect as DC motor [1]. In the paper, the vector control theory is briefly introduced, and then a vector control system model is builded in the matlab/simulink, and the SVPWM technique is adopted. The results show that the improved vector control sytem of PMSM has a excellent performance.

Test Analysis of a Six-Wheel Hydraulic Active Suspension Control System

2012 ◽  
Vol 591-593 ◽  
pp. 1710-1714
Author(s):  
Wei Chen ◽  
Zhi Yao ◽  
Qing Bo Zhao ◽  
Tong Jian Wang
Keyword(s):  
Mathematical Model ◽  
Control System ◽  
Active Suspension ◽  
Hydraulic Cylinder ◽  
Suspension System ◽  
Quantitative Feedback Theory ◽  
Test Analysis ◽  
Suspension Control ◽  
System Robustness ◽  
Road Performance

In order to make the active hydraulic suspension system to adaptive the ground. Taking the asymmetric valve controlled hydraulic cylinder as actuators, a six wheels hydraulic active suspension was designed. It is difficult to analysis of the six wheels system. So this paper established the single wheel’s mathematical model to instead analysis of the whole system, designed QFT (Quantitative Feedback Theory) controller which can be a solution to the system robustness, researched the hydraulic active suspension system. The results show that it is good for tracking performance of the hydraulic cylinder which taking the asymmetric valve controlled as actuators, system responses timely and the controller can meet the controlling requirements. This hydraulic active suspension system can improve off-road performance of engineering vehicles.

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