查询词典 actuator

Based on the stability condition, the robust stability of uncertain time-delay T-S fuzzy systems subject to actuator saturation is discussed, and the state feedback gain that maximizes the domain of attraction is designed.In chapter 5, a problem of determing stability domain of time-delay T-S fuzzy systems with input saturation is discussed.

在系统参数不确定的情况下，通过构造适当的Lyapunov-Krasovskii泛函，同样给出了该不确定系统的鲁棒稳定性条件，通过求解线性矩阵不等式形式的约束优化问题，可以得到使吸引域尽可能大的状态反馈增益。

Five novel torsion-mirror optical actuators including double-beam thickness differential structure with single torsional axis, double flexible folded-beam structure with single torsional axis, double-beam vertical torsion comb structure with single torsion axis, four-beam differential compound-micromirror structure with double torsional axis and the combined structure of the four basis forms above, are brought forward. All of these devices could be fabricated by the same silicon micromachining process we have developed. The deformation compensation design with local enhancement for the thin torsional beam which is the key structure of these devices is also put forward to improve the reliability. The three-dimension solid model and two-dimension reduced order model of the torsion-mirror optical actuator are established and then the numerical simulations for evaluating the device characteristics of the statics, dynamics, electrostatic field, mechanical and electrostatic coupling, fluid and solid coupling are carried out to optimize the structure design. Furthermore, three optical fibre clamping structures which could be integrated monolithicly are designed and analyzed to improve the optical coupling capability. 4. Three flexible process flows combined with bulk silicon micromachining and surface silicon micromachining are brought forward to fabricate these novel single-crystal silicon or polysilicon torsion-mirror optical actuators by using the same lithography masks for both SOI wafer and regular silicon wafer. A series of important process experiments are carried out to optimize the process parameters and the process flows. Some novel and typical process phenomena which occurred during the microfabrication are analyzed and then the corresponding solutions are put forward. 5. A MEMS dynamic testing system which exploit blur image synthetic technique, stroboscopic image matching technique, stroboscopic mirau microscopic interferometry technique and microscopic laser dopper vibrometer technique is set up to measure three-dimension and six-freedom micro motions of any MEMS devices with nanometer resolution.

在对硅微机械扭转镜光致动器的光机电特性系统地理论研究的基础上提出了硅微机械扭转镜光致动器的结构设计准则。3、提出了单轴双梁厚度差分结构、单轴双柔性折叠梁结构、单轴双梁垂直扭转梳齿结构、双轴四梁差动复合微镜结构以及以上四种基本结构组合后的衍生结构等五种工艺加工技术兼容的新型的硅微机械扭转镜光致动器，对器件关键结构薄厚度、高耐疲劳扭转梁进行了局部加强的变形补偿设计，建立了器件的三维实体模型以及两维降阶模型，对提出的新结构硅微机械扭转镜光致动器进行了系统的静力学、动力学、静电场、力电耦合和流体固体耦合的建模仿真与优化设计，同时设计并分析了三种可实现单芯片集成的弹性光纤定位夹紧结构。4、提出了组合体硅微加工技术与表面硅微加工技术、兼容同一套光刻版图、可分别基于SOI 晶片和普通Si 晶片、适应于制造提出的各种新结构单晶硅和多晶硅硅微机械扭转镜光致动器的三套柔性加工工艺流程，开展了一系列重要工艺步骤的单项工艺试验，对工艺流程与工艺参数进行了优化，针对加工过程中出现的具有普遍意义的典型工艺问题进行了讨论和分析，并提出了解决方法。5、创新性地将模糊图像合成技术、频闪图像匹配技术、频闪Mirau 显微干涉技术与显微激光多普勒测振技术有机结合，建立起了一套周期运动测量与瞬态运动测量相结合、单点运动测量与全视场运动测量相结合、满足不同MEMS 器件各种动态测试要求的集成的MEMS 三维六自由度微运动精密测量系统。

In order to adjusting plate electrization, some servo-motors replacing mechanism as actuator were installed in the gap of the plate cylinder.

在印版滚筒的空当安装伺服电机作为执行机构来代替机械部分的动作，以实现调整印版的电气化

In order to adjusting plate electrization,some servo-motors replacing mechanism as actuator were installed in the gap of the plate cylinder.

在印版滚筒的空当安装伺服电机作为执行机构来代替机械部分的动作，以实现调整印版的电气化；通过光电头自动检测套印误差，并将误差信息反馈给伺服放大器，构成闭环控制系统。

A novel moving coil electromagnetic valve actuator was presented,and a coupling system model was developed from three points of view: electric circuit, electromagnetic field and mechanism.

建立了电、磁和机械耦合的系统模型，研制了样件并实测了样件的静态驱动力特性，并对电磁驱动气门的动态特性进行了仿真。

It is slightness and light,it is activated directly or separately by an actuator at one side , and has an executer at the other side.

它形状细长，重量较轻，一端由驱动机构直接或间接驱动，另一端载有末端执行器。

Finite element method is used to calculate the electromagnetic field of permanent magnet actuator.

本文采用有限元方法计算永磁机构的磁场，分析静态特性，获得磁场分布、分合闸启动电流等参数。

For the first time, on the basis of the principle design scheme of the system, the reliability analysis of the new type of electromechanical fluid drive system and its subsystem is carried out overall and systematically, which contents include reliability model building, reliability prediction and distribution, failure mode and effect analysis , fault tree analysis of the straight-rotary ball actuator.

基于本文提出的系统原理设计方案，首次对飞行器新型机电液驱动系统及滚珠直旋作动器子系统进行了较全面、系统的可靠性分析，包括系统与子系统可靠性建模，系统的可靠性预测与分配，系统的失效模式及影响分析，系统的故障树分析等，并结合给定设计指标对现有系统和子系统的可靠性进行了分析与评价，指出了提高系统及部件可靠度的措施。

The micropump ,as an important actuator,is the symbol of the development level of micro fluidic system.

微型泵是微流体系统中的重要执行元件，标志着微流体系统的发展水平。

As a flying height actuator, a piezoelectric bender is used in this study to complement an air bearing at the head/disk interface to perform the feedback control in order to decrease flying height variation due to disk vibration and tilt.

因此本研究应用飞行高度控制器结合压电弯片驱动器与滑动器，在飞行高度方向上执行回授控制，用於追随碟片模态与倾斜所造成之碟片高度变化，以维持要求的稳定飞行高度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。