摘要
通过地质学、岩石化学、微量元素和稀土元素地球化学等研究，认为院格庄花岗岩为板块俯冲带边缘上的同熔型花岗岩，与区内燕山晚期其它岩浆岩是同源岩浆演化的产物．
This paper introduces three kinds of nonlinear control theories used in power systems. Especially, author's research achievements on the Direct Feedback linearization method are summarized. Two different approaches are developed respectively when the relative degree (r) is equal to or less than the order of the system (n). Since the strong nonlinear properties of a power system, an extensive application of nonlinear controller will be the main trend. From the point of view of application, the direct feedback linearization theory has a broader prospect.
出处
《青岛大学学报（自然科学版）》
CAS
1998年第2期58-62,共5页
Journal of Qingdao University(Natural Science Edition)
关键词
花岗岩
成因
地球化学
同熔型
nonlinear control
power system
direct feedback linearization
