查询词典 infinite matrix

After determining the assemble scheme, the closed forward and inverse solution and velocity Jacobin matrix of the two degree of freedom parallel mechanism are obtained.

摘要在确定机构装配方式基础上，求解了二自由度并联机构的位置正反解和速度雅克比矩阵。

Our method, without using Jacobin matrix, inherit many virtues of stochastic gradientboosting like perfect prediction precision and easily dealing with higher dimension.

该方法不用计算估计函数的雅可比矩阵，继承了随机梯度Boosting算法的许多优点，如较高的预测精度，容易处理高维数据等。

Static load model and Jacobin comparable matrixs structures features were analyzed ,the results showed that the Jacobin comparable matrix characteristic would be changed after considered the load character, which have an impact on the static voltage stability.

并分析两种负荷模型与潮流雅可比矩阵的结构和特点，研究表明计及负荷特性后将改变雅可比矩阵的特征值，从而影响了系统的静态电压稳定性。

The velocity equation imelvding the actuator and the end effector velocities, and the Jacobin matrix of mechanisms are derived.

针对非对称球面五杆机构，研究了机构的奇异轨迹曲线和灵巧度。

Firstly,the Image Jacobin Matrix for GRB-400 robot which is a dynamic look and move system has been established.Then,a hierarchical Model Reference Adaptive Control law combined with a fuzzy regulator is proposed to solve the control problem,and the comparison of the experimental step responses between system with fuzzy logic and system without fuzzy regulator is delivered.The experimental results show the feasibility and advantage of the control l...

首先建立了视觉伺服GRB-400机器人的图像雅可比矩阵，然后针对该动态Look and Move系统提出了一种带有模糊自调整能力的分层模型参考自适应控制的设计方法，其特点是设计方法简单并可以在线调节相关参数，给出了闭环系统的阶跃响应实验结果，并与原分层模型参考自适应控制闭环系统的动态性能做了比较，实验证明了改进后的闭环系统具有更好的动态性能。

The relationship between minimal model characteristic value of electric power system tie flow Jacobin matrix and voltage steady-state stability is was discussed, and the minimal model eigenvalue is was defined as voltage stability abundant degree. On this foundation, the sensitivity of voltage stability abundant degree to control variables and to PQ point load are was defined in order to seek the factors of impacting voltage stability and explore the voltage weak point, and give out their algorithm simultaneously.

讨论了电力系统潮流雅可比矩阵最小模特征值与系统电压静态稳定性的关系，将最小模特征值定义为电压稳定裕度，在此基础上定义了电压稳定裕度对控制变量的灵敏度和PQ节点负荷灵敏度，用以找出对系统电压稳定性造成影响的因素和寻找系统电压薄弱点，同时给出了它们的算法。

In mechanics kinematics, Jacobin matrix may be calculated and simplified by vector constructing; Inverse solution and its restricting condition be given; Forward solution be solved by new-raphson method. The method need shorter time than optimization and has a lot of advantages in applying program; some relationship of velocity, acceleration, force and error of mapping from input to output have been given. Analyzing of theory base these researches.

在机构运动学研究方面，通过矢量构造的方式计算出了速度雅克比矩阵，简化了计算量；给出了机构位置逆解的计算过程及约束条件；利用Newton—Raphson法计算出了机构位置的正解，该算法比优化法计算时间短，而且利于实际编程；给出了机构输入、输出端速度、力、误差的映射关系，这些研究是机构理论分析的基础。

We also introduce the key of JD algorithm——system matrix.

然后重点研究了联合检测算法在非理想情况的稳健性。

Fourthly, the reduced-Dimension STAP based on Joint-Domain Localized algorithm is studied for bistatic clutter cancellation, and a modified JDL algorithm is proposed, which transfers the space-time data to the angle-Doppler domain by using a transform matrix.

研究了基于局域联合处理算法的降维STAP双基杂波抑制技术，并提出了一种改进JDL算法，其空时数据域到角度—多普勒域的变换用角度—多普勒变换阵完成。

We will demonstrate the specification of reference prior distribution on the random covariance matrix. We will consider the approximate uniform shrinkage prior and approximate Jeffreys' prior. Both are formulated based on the approximated likelihood function. Under generalized linear mixed models, we show that the posterior mode under Jeffrey's prior is asymptotically closer to the REML estimate than the mode under uniform shrinkage prior does.

在广义线性混合模式下，我们证明了在样本数很大时，随机效应之变异数成份的后验众数和REML估计值会近似相等，同时也建立了后验众数和REML估计值的近似关系式，并提出了比较二种后验众数与REML估计值之间远近的准则。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48