prescribed value meaning in Chinese
给定数值
已知数
Examples
- We establish the continuous dependence on the initial values and the spatial geometry in an initial - boundary value problem for the generalized maxwell - cattaneo system with no prescribed value for temperature t on boundary
值得注意的是问题只对热流得出了边界上的dirichlet条件，对温度未给出边界值条件，这一点在数学上物理上更合理。 - ( 2 ) a robust adaptive controller with l 2 - gain is derived for a class of siso cascaded nonlinear uncertain systems with zero dynamics . the state feedback controller guarantees that the closed - loop system is input - to - state stable and the l 2 - gain from the disturbance input to the controlled output is not larger than a prescribed value for all admissible parameter uncertainties
( 2 )针对一类具有零动态siso串联不确定非线性系统，结合h _控制和自适应控制并利用李亚普诺夫函数递推设计方法设计了状态反馈h _鲁棒自适应控制器，避免了求解hji不等式设计控制器的困难。 - At first , the robust h control for uncertain nonlinear systems with norm bounded uncertainties is studied , based on a positive definite solution of hamilton - jacobi - issacs inequality ( hji ) , a sufficient condition is given such that the closed loop system is asymptotically stable and its l2 - gain is less than or equal to a prescribed value . using this condition state feedback control law and an output feedback control law which ensured robust hx performance of the closed - loop system are derived . due to the difficulty to solve hji , a method is proposed which do not require solving it by using an appropriate lyapunov function
首先，研究了范数有界型不确定非线性系统鲁棒h _控制问题，基于hamilton - jacobi - issacs不等式( hji ) ，给出了闭环系统渐近稳定且l _ 2 -增益有限的状态反馈和输出反馈设计算法。考虑求解hji的困难性，针对不确定非线性系统，通过适当地选择lyapunov函数，提出了求解非线性系统鲁棒h _控制问题的算法，可以避免求解hji 。