Multi-Motor Synchronous Control Based On Deviation Coupling Structure With Fuzzy-Self-Adjusting Control

With the development of modern industry,multi-motor synchronous control is widely used in rolling,electric vehicles,robots,textile and other high-precision control occasions,synchronous control performance reflects the system's control accuracy,thus affecting the quality of the product.Therefore,the research of multi-motor synchronous control performance improvement strategy has important theoretical value and practical engineering significance to improve the control precision and stability of the system.The method of improving the performance of multi-motor is divided into two categories: First,by changing the control algorithm of single motor,so as to improve the performance of single motor,and then improve the synchronous performance of multi-motor coordination control.This paper first analyzes the limitations of traditional PI control,and then introduces the advance correction control,the use of advanced correction to achieve feedforward control,improve the dynamic response of each motor speed,effectively solve the traditional PI dynamic response slowness,and finally through The validity of the proposed method and the correctness of the theoretical analysis are verified by Matlab / Simulink simulation.Multi-motor coordination control includes mechanical and electrical control.This paper focuses on the performance of electrical control multi-motor synchronous control.After theoretical analysis and simulation,it is concluded that the deviation coupling is widely used in modern industry because of its fast response speed and good synchronization performance,but its synchronization performance is still to be improved.In this paper,a fuzzy self-adjusting deviation coupling control structure is proposed for the shortcomings of the deviation coupling control structure in the process of multi-motor starting with large synchronization error,longer start-up time and cumbersome synchronous compensator.This structure adopts the method of combining fuzzy self-adjusting filter and advanced synchronization compensator.Introducing the concept of "softening speed",and the softening speed is adjusted by the fuzzy controller so that each motor follows the trajectory of the softening speed when starting,effectively reducing the synchronization error of the starting process.Introducing correction links to synchronous compensator to shorten the system adjustment time.In addition,this paper also analyzes the synchronization performance of proposed structure in steady state when adding a sudden load.Finally,in order to verify the feasibility of the fuzzy self-adjusting deviation coupling control structure proposed in this paper,the Matlab / Simulink simulation is verified and the experimental platform of the synchronous speed control system of permanent magnet synchronous motor is established.The experimental structure is verified by experiments.Validity and theoretical analysis of the correctness.