摘要
提出了利用非线性系统的局部线性等价求系统二次型李亚普诺夫函数的方法：导出了液压控制系统绝对稳定的充分条件，从而证明了控制律泛函在某一范围变动时，系统是绝对稳定的；通过实例计算对比，证明了线性化模型的稳定性判据的局限性．
Absolute stability of hydraulic servo systems is a precondition for various laws of control to be applicable.By use of the Lyapunov theory,the absolute stability for a type of nonlinear system is derived. It is proved that the hydraulic control system is absolutely stable as long as its proportional coefficient ka lies within a certain range.
出处
《北京理工大学学报》
EI
CAS
CSCD
1996年第3期318-322,共5页
Transactions of Beijing Institute of Technology
基金
高等学校博士学科点专项基金
关键词
绝对稳定性
李亚普诺夫函数
液压控制系统
electro-hydraulic servo systems
absolute stability
Lyapunov functions
