模态系统

The simulation results of liquid propellant rocket engine demonstrate that modal interval analysis is effective to complex dynamic systems.

通过对某泵压式液体火箭发动机稳态工作过程的模态区间仿真计算，证明模态区间分析方法对复杂动态系统建模仿真是有效的。

The tire modal test and its application to the tire structure design were analysed,and a tire modal analysing test system was established.

分析了轮胎模态分析的试验方法及其在轮胎设计中的应用，并建立了轮胎模态分析试验系统。

Present a kind of paraconsistent modal logics PML by generalizing classical modal logics'truth value set from {0, 1} to [0, 1] , propose new logical consequence relationships by generalizing fuzzy implications in PML, introduce sound and complete Gentzen style inference systems in PML. 9. Global properties of valid formulas are the necessary conditions that must be satisfied by valid formulas.

8将经典模态逻辑公式的值域从{0，1}扩充到[0，1]，结合模糊逻辑推理关系的研究结果，建立了能处理不一致知识的模态逻辑，并给出其可靠而且完备的Gentzen型推理系统。

It concludes that the mode of the linear pe-riodic time-varying vibration system is complex mode and isperiodically time-varying .

通过研究发现，线性周期时变齐次系统的模态不仅具有复模态的性质，而且为周期时变性。

To validate the proposed method, numerical simulation and a vibration mode test of a cantilever beam are completed, where the mass varies continuously with time.

为验证方法的有效性，进行了数字仿真和附加质量随时间连续变化的悬臂梁的模态分析试验，试验结果和理论结果比较，表明了提出的线性时变系统的模态参数识别方法有效、可行。

Also the response amplitude will be changed with the initial conditions due to the nonlinear properties of the cables.Taking the bending stiffness, cable sag and cable inclination into consideration, the space vibration control of the cables using the visco-elastic dampers in cable-stayed bridges is investigated by joining the center difference method and the state space strategy. Both the maximum modal damping ration and the optimal damper size are obtained, then the practical suggestions are proposed for the design of the dampers. The space nonlinear vibration equations of the cable-damper system are derived, and anew hybrid method for solving the cable-damper system is presented by combing the Newmark method and Pseudo-force technology. According to the known properties of the cable-damper system, the nonlinear transient responses are analyzed under all kinds of excitations. Based on the transient response, the control effectiveness of the visco-elastic dampers is further demonstrated.

综合考虑了拉索抗弯刚度、垂度的影响，研究了粘弹性阻尼器对斜拉桥拉索的空间振动控制，联合中心差分方法及状态空间法，得出了拉索面内、外振动各阶模态可能达到的最大阻尼比及相应的最优阻尼器系数，并对斜拉桥拉索的阻尼器设计提出了参考建议：考虑拉索抗弯刚度、垂度及几何非线性，导出了索-阻尼器系统的空间振动非线性方程组，结合Newmark方法及伪力(Pseudo-Force)方法，创新地提出了求解非线性方程组的杂交方法，根据拉索-阻尼器系统的阻尼特性，在各种荷载作用下，对索-阻尼器系统的非线性瞬态振动响应进行了研究，从系统响应的角度更加直接地验证了阻尼器的控制效果。

Dynamic balancing; Vibration system; Flexure hinge; Instantaneous motion center; Plane separation; Force relation; Modal analysis; Empirical modal decomposition; Adaptive lattice notch filter; Phase difference correction

工程科技II，工业通用技术及设备，声学工程动平衡；振动系统；柔性铰链；瞬时运动中心；平面分离；关联效应；模态分析；经验模态分解；自适应陷波；相位差校正

For the four laterals simply supported plate, the transverse deflection of plate is expanded over the modal shapes, the electroelastic model with self-sensing actuators plate is given, and the current is considered as output variable of measurement equation. Generalized modal coordinates being state variables, LQG and H∞control is proceeded using the state space equation.

将板的横向位移按模态展开，对配置压电自感作动器的薄板建立了模型，给出以广义模态坐标为状态变量的状态方程和以传感电流为输出的观测方程，在此基础上，对系统进行了LQG控制和H∞控制。

First of all, the clustering result is corresponding to the Kripke structure. The relevant system of axioms is chosen by the correspondence between the syntax and semantics of modal logic.

首先将聚类结果对应于模态逻辑中Kripke结构；然后利用模态逻辑中语法与语义之间的对应性选取了相应的公理系统。

In order to optimizing the vibration isolation of some diesel generator set ,an analysis of the vibration character and excitation forces of it is presented through theory study and vibration testing.

通过对频响函数的测试，获得了某型柴油发电机组隔振系统各阶刚体模态频率和弹性模态频率，分析了该机组振源和振动特点。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。