查询词典 dynamic system

With this method, the controller of the PWM DC/DC converter is designed. Utilizing augmented matrix to build a tracking control model with no steady error, and through select weighted matrix to perform the no overshoot and dynamic response of system.

通过引入增广矩阵，增加了控制量U*中对误差的积分环节，推导了无静差跟踪控制系统模型；在目标函数的构成参量和形式确定之后，通过选取适当的加权矩阵，实现系统的无超调动态响应。

The main circuit of the direct voltage type SVC consists of the autotransformer with average voltage, fixed branch which can compensate the reactive power and filter the harmonic, dynamic branch which can compensate the reactive power and filter the harmonic, capacitive AC thyristor no contact switch and the measuring and controlling system of

自耦均压变压器作为SVC中的主要器件，本文通过变压器的短路试验以及编程进行多项式拟合，建立了其漏抗随电容器组投切级数变化的数学模型，进而做了自耦均压变压器与相同容量相同变比的双绕组变压器有功损耗的比较，分析了36抽头自耦均压变压器在一组电容器全部投运时的空载特性，并对SVC的静态性能进行了全面分析。

With the great change in sci-tech activities in high-tech era, the theme of philosophy of science has to be transformed into the Topics of Science from the traditional axiomatic system for static researches on single theory and paradigm conversion for dynamic researches on multiple theories.

随着"高科技时代"科学活动方式的巨大转变，科学哲学主题也将由传统的"公理体系"的单理论静态研究和"范式转换"的多理论动态研究向大科学时代的"科学论题学"研究转变。

In the design of the large intensifying screen, this paper conducted the analysis of the structure mechanics and the finite element method analysis on the strength and rigidity of scneen box and crank axle system, designed a new type mesh, and finished the dynamic simulation of the motion of the particle group in intensifying screen on computer.

应用碰撞理论、概率理论和混沌、分叉理论对物料运动的规律性进行了深入分析与研究。大型强化筛的设计进行了结构力学分析和筛箱、曲轴系统的强度、刚度有限元分析；设计了新型的筛网结构；应用计算机对料群在强化筛中的运动规律性进行动态模拟。

The simulation results show that the vector control system based on this improved scheme has better dynamic and static performance. It solves a lot of problems such as larger error in the MRAS based on the back electromotive force when the motor runs across the zero speed and the instability based on the instantaneous reactive power in the regenerating mode and has high estimating precision.

仿真表明基于该方法的矢量控制系统动静态性能好，能有效解决反电动势模型参考自适应方法在速度过零点辨识误差大以及瞬时无功功率模型参考自适应方法在转速给定为负阶跃时转速不稳定问题，转速估计精度高。

Due to strong disturbance of fin angle, surplus forces are produced that can badly influence static and dynamic characteristic of loading system.

减摇鳍加载系统是典型的被动式电液力伺服系统，由于受到减摇鳍鳍角的强干扰，引起很大的多余力。

Dynamic load balancing is an important method to improve the performance on such heterogeneous system.

在这样的异构系统上动态负载平衡是提高性能的一个重要方法。

A new type of on-line dynamic balancing system for the rotor is proposed, whose creativity lies in the design of balancing head and control method.

研制了一种新型结构的转子在线自动平衡系统，提出了全新的平衡头结构和控制方法。

A dynamic model of a rotor- ball bearing system with unbalance-rubbing coupling fault is established.

建立了滚动轴承支承下的转子系统的不平衡-碰摩耦合故障动力学模型。

The characteristic, difference and relation of the normal and inverse design are compared detailedly. The formula of the first and second class eigen sensitivity are given. For the horizotal vibration system of building structure, the sensitivity method and perturbation method are adopted to modify the dynamic characteristics. The inverse eigenvalue problem of Jacobi matrix and the positive, symmetry, band matrix are studied. The method of Evolutionany Computation is first used in the inverse design of building structure, the principal problems are studied. The features of aseismatic inverse design of building are analysed.

本文较详细地比较了正、逆设计的特点；给出了特征值和特征向量的一阶和二阶灵敏度分析公式；对于建筑结构水平振动系统，提出了结构动态特征的修改方法；对Jacobi矩阵及实对称带状矩阵的逆特征值问题进行了分析研究，首次将其引入建筑结构抗震逆设计中；首次将进化计算方法应用于建筑结构抗震逆设计中，对主要问题作了探讨；对建筑结构抗震逆设计的特点进行了分析，提出未来的发展方向和前景。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷