消振

The parameters optimization design model is proposed, which is based on a control model with the quasi-Euler angle, Euler angle velocity and absolute angular velocity as the feedback. The vibration-resistance parameters of the given controller are chosen as the optimization variables, and the on-off times of the engines is chosen as the optimization objective function.

基于一类采用拟欧拉角、拟欧拉角速度和飞行器绝对角速度为反馈信号的姿态机动控制模型，以其消振参数为优化变量，开关次数为优化指标，建立了姿态机动参数优化模型。

The simulation study shows that linear polarization sensitivity of silvered orthogonal twin mirrors is better than that of aluminum or aurum mirrors at the range of 0.4μm～10μm, and the silvered orthogonal twin mirrors have less influence on polarization ratio than those of aluminum and aurum mirrors.

模拟计算结果显示：在0.4μm～10μm波段内，非理想正交镀银反射镜的线偏振灵敏度优于铝、金等正交反射镜，且对光束偏振度的改变最小，因此正交镀银反射镜在高精度偏振遥感探测中值得广泛应用；若把角度误差控制在0.5°内，则正交镀银反射镜的偏振特性对偏振遥感器的辐射度和偏振度影响很小，具有较好的消偏性能。

To compare with former works, it has following characters: 1. On the first time, theoretically analyze the principal and aspect of the depolarizer, which is an important component of D-IFOG.

与前人的工作相比，本文的特点在于： 1，首次利用Jones矩阵理论系统地研究了作为消偏干涉型光纤陀螺的关键器件的光纤消偏器的工作原理及工作特性，推导出偏振度与各有关参数之间的函数关系，明确了各参数在偏振度中所占的比重，首次设计出制作这一器件的实验系统，并制作出偏振度为1.0％的光纤消偏器。

By adding Polarization Maintaining Fiber on output terminal of SLD and Loyt depolarizer behind polarizer , the Degree of polarity can be reduced to 10 -3 ,and influence of outside conditions to light-wave′ state of polarization can be reduced too.

利用在光源出端加单段保偏光纤和在消偏器后端加Loyt消偏器，可以使进入光纤线圈的光的偏振度降到10-3数量级，降低了因外界因素对线圈中光偏振态的影响而产生的光纤陀螺偏振误差。

The principle and design method of vibration energy dissipation and structural control are introduced.

介绍了结构控制和消能减振技术的减振机理和减振设计方法，对不同结构构造的粘滞流体阻尼器的耗能原理进行了研究，研制出了一种性能稳定的双出杆型工程结构减振粘滞流体阻尼器。

The results show that the control algorithm. The results show that the control algorithm can track and tune the phase online, and good vibration reduction effect is obtained.

实验结果表明，该控制算法在没有预先获得振源结构动力特性的情况下，能实现相位的在线调节，取得很好的消振效果。

By using one chip and one apical clamping mode, tailstock has elastic .

采用托架避免工件产生很大的摆动，垫块具有消振的作用。

These algorithms can be applied without prior identification of the dynamitic characteristics of ship structures.

通过用MATLAB进行的主动消振仿真实验，证明这3种控制算法都具有较高的准确性和实用性。

Through the conductor self damping measurements verified the rationality of improved formula for calculating transmission line self damping; through the damping tests of stockbridge damper is installed in different location, indirectly verified the correctness of the location optimized calculation of the stockbridge damper; through the damping test of wire dampers, the correctness of damping energy calculated theory of wire dampers are proved.

通过输电线自阻尼测试试验，验证了改进后输电线自阻尼计算公式的合理性；通过防振锤不同安装位置时的消振试验，间接验证了优化后的防振锤安装位置计算方法的科学性；通过阻尼线的消振试验，证明了阻尼线耗能计算理论的正确性。

Periodic fluid pulsation in aeroplane hydraulic piping could induce fluid-construction vibration and lead to fatigue damage. It is impossible to find the error sensor's optimization location because of the pressure standing wave, and the pulsation attenuation effect is not perfect when adopting pulsation attenuation at single point. For this reason, a distributed active control method of fluid pulsation was presented. To avoid stationary point in all aviation states, several fluid pulsation actuators and error pressure sensors were placed along the piping. The second fluid pulsation produced by actuators can counteract the primary pulsation brought by aviation piston pump and make the mean pulsation of whole piping minimum when adopting adaptive feed- forward control and the filtered-X least mean square algorithm.

针对飞机液压能源管路系统中的周期性流体脉动诱发流固耦合振动，导致管路疲劳损伤的问题，针对管路中存在压力驻波特性，在采用单点消振时寻找误差传感器最佳布局位置困难而引起脉动抑制效果不理想的缺点，提出了一种分布式流体脉动主动控制方法，即沿管路不同位置布置多个主动消振阀和误差压力传感器，在任意飞行阶段，避开压力驻波点，以误差压力传感器的脉动测量值为控制目标，采用一种针对周期脉动主动控制的自适应前馈控制法和多通道自适应滤波－X LMS算法，调整控制器参数，使主动消振器产生的次级脉动与管路中的初始脉动相互抵消，达到整个管路中的平均流体脉动最小的效果。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。