Research On Synchronization Control Of Neighboring Cross-coupled Multi-motor Based On RBF Sliding Mode

With the rapid development of modern industry,multi-motor synchronous control is more and more used in different production fields.For the mechanical control system with multiple motors,the control accuracy requirements are higher and higher.In processing,printing,machine manufacturing and other industries,the quality of motor control performance and control accuracy in the system directly determine the quality of products.Therefore,how to improve the synchronization performance of multi-motor as soon as possible has become an urgent problem in industrial development.Firstly,the principle of permanent magnet synchronous motor(PMSM),vector control algorithm and space vector pulse width modulation(SVPWM)technology are introduced.The vector control method of table-mounted permanent magnet synchronous motor and i_d=0 is selected to provide research basis for the design of multi-motor synchronous controller.Secondly,aiming at the shortcomings of the existing multi-motor synchronous control structure,an improved adjacent cross-coupling control structure is proposed,which replaces the speed difference in the traditional controller with tracking error.On the basis of guaranteeing the synchronization performance,the synchronous control structure is simplified,so that it can be applied to a wider industrial production system.Thirdly,a sliding mode controller(RBF-SMC)based on radial basis function(RBF-NN)is designed for the chattering phenomenon in sliding mode variable structure control.By using the advantages of RBF-SMC,which can accurately approximate arbitrary curves,the sliding mode switching gain can be dynamically adjusted in real time to effectively reduce the chattering.The RBF-SMC is applied to the multi-motor synchronous system to reduce the tracking error and synchronization error.The difference is controlled by two sub-controllers respectively.The simulation results show that the difference is superior in reducing the synchronization error of multi-motor and improving the robustness.Finally,on the experimental platform of permanent magnet synchronous motor speed control system,the motor vector control algorithm and SVPWM are experimentally validated,which lays the foundation for the application of advanced algorithm in the future.The paper has 58 figures,9 tables,and 51 references.