Research And Practice For Multi-axis Synchronized Control Strategy

With the development of servo technology, multi-axis system, which is a key part ofelectromechanical device control, is widely applied in many areas. Synchronized multi-axis system isinvolved with many subjects, such as mechanical, electronics, automation and so on. Therefore, theresearch based on it becomes with high significance.In this thesis, the principles of traditional synchronized control methods were introduced. Basedon these theories, several control strategy of electrical synchronized method was researched. Theireffects for synchronization and improvement approach were also discussed. The main research workand achievements are as follows:(1)The simulation model of multi-axis system, which is based on AC servo motor, wasestablished in Simulink. The factors which may impact system’s synchronization were also analyzed.The above work provided the possibility for the research of synchronized control strategies.(2)Based on analyze of traditional mechanical shaft synchronized control method, the controlmechanism of virtual shaft strategy was analyzed. The simulation model of this strategy was alsoestablished. Each parameter’s effect on synchronization in virtual shaft strategy was discussed. Bymeans of simulation, the synchronization performance of this strategy was tested and also comparedwith traditional method.(3)The structure and mechanism of relative coupling control strategy was researched. Thesynchronization effect of the relative speed block was analyzed. Subsequently, the fuzzy controlalgorithm was used in the relative speed block in order to enhance the effect of synchronization. In theway of simulation, the synchronization performance of this strategy was tested. The comparing withother strategies was also carried out.(4)The experiment of multi-axial control system was executed. Based on the DSP controlplatform, the realization methods of virtual shaft strategy and relative coupling strategy for thebi-axial servo motor system were researched. By means of experiment, the performance of thesestrategies were tested and compared with the traditional methods.