参数自调整模糊控制器设计及其Matlab仿真

摘要

For improving the dynamic performance and stable precision of the arc welding seam tracking system,the parameter selfadjusting fuzzy controller is designed. Firstly,the paper introduced the structure of the arc welding seam tracking system.The structure of fuzzy controller is designed based on the structure composition of the Two-dimensional fuzzy controller. According to a lot of experiments and the theoretical analysis of the arc welding seam tracking system,the universe is selected. The quantization factor and scaling factor is selected for fuzzy processing.Parameter controller is set up.Secondly, system simulation modes are constructed. C MEX S function is compiled. Transfer function of Stepping Motor is designed.The system simulation model,which concludes General Fuzzy controller and parameter self-adjusting fuzzy controller with Parameter controller,is established. Finally,simulation results show that the parameter self-adjusting fuzzy controller can improve significantly the dynamic performance and stable precision of the arc welding seam tracking system.%为提高弧焊焊缝跟踪系统的动态性能和稳态精度,设计了参数自调整模糊控制器.介绍了弧焊焊缝跟踪系统的结构,在此基础上根据二维模糊控制器的结构组成,设计了参数自调整模糊控制器结构.在大量试验和对焊缝跟踪系统理论分析的基础上选择了其论域;选择了进行模糊化处理的量化因子与比例因子;设计参数调整器.其次,建立系统仿真模型.编写C MEX S-函数;设计步进电机传递函数;构建了常规模糊控制器和加入了参数调整器的参数自调整模糊控制器的仿真系统.通过仿真和实验证明了参数自调整模糊控制器能够明显提高焊缝跟踪系统的动态性能和稳态精度.