查询词典 quadratic

A control strategy based on the linear quadratic form is proposed.

研究了含有参数故障的线性系统，提出了一种基于线性二次型的控制策略。

Linear Fractional Transformation is adopted to translate the control of perturbation to the control of disturbance, then cost index is augmented, and with the min-max method, a robust receding horizon control law is derived. The sufficient conditions for the existence of the control law and closed-loop stability are also presented. The result is extended to time-invariant system with an infinite horizon, and its consistence with the robust control based on the concept of Quadratic Stability is verified.

首先利用线性分式变换，将摄动系统的鲁棒控制问题转化为对扰动系统的鲁棒控制问题；然后通过对性能指标的扩展，利用min-max方法，得到了鲁棒滚动时域控制律，并给出了其存在和使闭环系统渐近稳定的充分条件，并将结果扩展到对定常系统时域无穷的的情况，指出其与现有的基于二次型稳定概念提出的鲁棒控制的一致性。

To reduce the conservatism in the estimation, the Schur complements of the matrixes are applied to transform the problem of selecting a suitable quadratic Lyapunov function into a simple convex optimization problem with linear matrix inequality constraints.

同时为了减少保守性，利用矩阵的Schur补性质，将如何选取该二次型Lyapunov函数的问题转化为标准的LMI凸优化问题。

The optimization problem with linear inequalities can be solved by Quadratic Programming. The simulation results show that the design improves the dynamic performance and suppress torsional vibration causing by rolling perturbation. The model predictive control suppresses rolling perturbation.

仿真结果表明，采用具有约束条件的预测控制策略的控制系统对轧机传动系统的控制效果在动态性能和抑制扭振效果上明显优于传统PI控制，可以较好的抑制轧制扰动对传动系统产生的影响，对解决轧制扰动鲁棒性控制问题是一种有效的解决办法。

Through this study, it is feasible to use the control technology based on mode analysis, both the linear quadratic optimization control and the sliding mode control.

研究结果表明：本文采用的基于模态分析的控制技术，无论是线性二次最优控制还是滑动状态控制是可行的。

The paper shows that a method of PID parameter optimization based on linear quadratic optimal control.

基于二次型最优化理论，对PWM DC-DC变换器PID控制参数进行优化整定和设计。

Grover's algorithm is a quantum algorithm that offers quadratic speedup over the classical linear search for unsorted lists.

Grover的算法是一种量子算法，提供二次提速的经典线性搜索未排序的清单。

They do not enjoy finite termination on quadratic objectives or rapid local convergence.

它对于二次目标的有限终止或快速局部收敛的条件仍不满意。

We construct algorithms in which directions are computed by these two systems and the step-sizes are generated by Armijo line search to solve the original constrained optimization problem and prove that the discrete scheme based on the differential equation system with the second order information has the locally quadratic convergence rate under the local Lipschitz condition.

我们构造了搜索方向由两个微分系统计算，步长采用Armijo线搜索的算法分别求解这个约束最优化问题，在局部Lipschitz条件下基于二阶信息的微分方程系统的迭代方法具有二阶的收敛速度。

The numbers of new cases and the rate of incidence of malaria can be predicted by the quadratic forecast model of population and the logarithmic curve model of new cases. The general trend of malaria are gradually decreasing in Chongqing municipal.

运用人口数的二次曲线模型和疟疾新发病例的对数曲线模型能够较好的预测疟疾发病数和发病率，总体来看重庆市疟疾动态的总趋势是持续下降的。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。