NDLI: Virtual line-shafting control for permanent magnet synchronous motor systems using sliding-mode observer

Content Provider	IET Digital Library
Author	Zhang, Changfan He, Jing Jia, Lin Xu, Chengjie Xiao, Yuanyuan
Abstract	This study presents a novel observer-based electronic line-shafting control strategy for permanent magnet synchronous motor systems. Adopting the sliding-mode variable structure technology, the proportional–integral speed controller for every servo unit is designed, followed by design of two cascades connected observers, in order to improve the system synchronisation performance when a large load disturbance occurs. The load torque observer transmits the observed load torque value instead of the calculated one back to the virtual shafting, which reflects the dynamic relationships of all the virtual or slave shafts more accurately. Another load torque derivative observer feeds the observed value forward to the corresponding sliding-mode controller for reducing the switching gain. The proposed control system is proved stable by Lyapunov stability theory, and simulation results show the strategy is effective on reducing sliding-mode chattering and achieving higher synchronisation precision.
Starting Page	456
Ending Page	464
Page Count	9
ISSN	17518644
Volume Number	9
e-ISSN	17518652
Issue Number	Issue 3, Feb (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/9/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2014.0477
Journal	IET Control Theory & Applications
Publisher Date	2015-01-23
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Electronic Line Shafting Control Load Disturbance Occurs Load Torque Observer Lyapunov Method Lyapunov Stability Theorem Machine Control Modelling And Identification Multivariable Control System Observer Based Electronic Line Shafting Control Observers Permanent Magnet Motors Permanent Magnet Synchronous Motor System Proportional Integral Speed Controller Simulation Slave Shafts Sliding Mode Controller Sliding Mode Observer Sliding Mode Variable Structure Technology Stability in Control Theory Switching Gain Synchronous Machine Synchronous Motors Three-term Control Torque Derivative Observer Variable Structure System Virtual Line Shafting Control Virtual Shafting Virtual Shafts
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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