Presently, most microcomputer governors adopt pid control law . the traditional pid control law cannot deal with the conflicts of stability, accuracy and speediness . so parameters auto-tuning on-line must be adopted if stable operations under all conditions wanted to be guaranteed 目前的水轮机微机调速器普遍采用pid调节规律,传统的pid控制无法解决稳定性、准确性和快速性之间的矛盾,要保证系统在各工况下稳定运行,必须采用参数在线自整定技术。