Abstract:
In industry, rail gnawing phenomenon often
appears in the synchronous operation of crane. An improved
synchronous control strategy for a dual permanent magnet
synchronous motor (PMSM) servo system is proposed in this
paper. To achieve a synchronous performance with robustness,
a cross-coupled synchronous system based on the virtual
electronic shaft which both torque and speed are used as
feedback signals is developed. Two fuzzy PID compensators
with accurate approximation capability based on programmable
logic controller (PLC) is implemented to estimate the lumped
uncertainty. In the computer simulation, the improved
synchronous control strategy is proved to have strong ability to
adjust for the external disturbance, and have both smaller
convergence time and tracking error. Some experimental results
are illustrated to depict the validity of the proposed control
approach, which can effectively inhibited wheel’s rail gnawing
phenomenon in crane.
