JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2018, Vol. 48 ›› Issue (2): 72-80.doi: 10.6040/j.issn.1672-3961.0.2017.610

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A fault-tolerant control architecture for active magnetic bearing based on dual core processor

CHENG Xin1,2, LIU Han1,2*, WANG Bo1,2, LIANG Dian1,2, CHEN Qiang1,2   

  1. 1. School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;
    2. Hubei Maglev Engineering Technology Research Center, Wuhan 430070, Hubei, China
  • Received:2017-09-14 Online:2018-04-20 Published:2017-09-14

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Abstract: To satisfy the fault diagnosis of multi degree of freedom magnetic bearing system and the real-time control requirements, an ARM+DSP based heterogeneous dual core processor architecture was proposed. In hardware configuration, DSP was used as the fault monitoring to execute multiple loops, ARM was used as the main controller to implement the rotor position control algorithm, and the fault-tolerant controller was implemented according to the fault reconfiguration of the controller. In software architecture, a method of information interaction, task allocation and execution based on dual core processor was proposed, and bidirectional interrupt was designed to coordinate the execution sequence between control and monitoring code. In the experiment, the system fault diagnosis and real time fault tolerant control needed only 1.8 ms. Experiment results showed the effectiveness of the proposed architecture.

Key words: fault tolerant control, active magnetic bearing, shared data interaction, dual core processor, fault diagnosis, dual-direction interrupted communication

CLC Number: 

  • TP277
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