摘要
以ＺＸ７－４００型可控硅式弧焊逆变电源为例，阐述了用相关辨识法建模的原理和方法，建立该系统的数学模型，并按二阶工程最佳系统原理设计了闭环控制调节器。实现了焊接电流的恒流输出，改善了系统的动特性，此外还采用单片微机控制焊接电流按预置的工艺曲线输出，提高了该机的使用性能。
The principle and procedure for the identification of the dynamic performance of typeZX7-400 arc welding power source with SCR-inverter by the correlation method are de-scribed.The optimal closed-loop control system is discussed.Test results show that the ac-curate control of the constant current output can be realized and the system dynamic perfor-mance are remarkably improved.The welding current output to be varied according to a pre-set curve and the method of controlling the external characteristic of the power source bySCP are also described.
出处
《华中理工大学学报》
CSCD
北大核心
1995年第1期35-39,共5页
Journal of Huazhong University of Science and Technology
关键词
弧焊
相关辨识
逆变电源
建模
计算机控制
单片
are welding
identification by correlation method
controller
technological curve
