挠性

An upright piano includes a fall-board (12) hinged to a upper sill (10f) and connected through a pair of flexible coupling (13) to side arms (10b), and each of the flexible couplings has a rotary damper (13b) embedded in the side arm and an Oldham's coupling (13a/ 13c/ 13q) connected between the fall-board and the rotary damper so that the Oldham's couplings take up misalignment between the rotational axis (AX1) of the fall-board and the rotational axes (AX2) of the rotary dampers.

一种立式钢琴包括铰接在上部横梁（10f）上、并利用一对挠性联轴节联接在所说侧臂板（10b）上的一个落式盖板（12），每个挠性联轴节具有嵌埋在侧臂板中的一个旋转阻尼器（13b）和联接在落式盖板与旋转阻尼器之间的一个奥德海姆联轴节（13a／13c／13q），从而奥德海姆联轴节可以消除落式盖板的旋转轴（AX1）与旋转阻尼器的旋转轴（AX2）之间的对准误差。

In terms of the transmission shaft balancing, it exists another problem that the shaft is not looked at as rigid body.When the rotor running at a high-speed ,under the action of unbalance force ,the transmission shaft will bend. It is certainly ideal to balance a transmission shaft as a flexible rotor.However, considering the mass production of automobiles, this method is obviously unpractical. In order to discreasing the flexible deformation, in this theory, the feasibility that double- plane balancing takes method the place of multi-plane balancing on a special place for one segment transmission shaft.

从传动轴平衡的角度来看，传动轴并非刚体，在汽车高速旋转时，由于不平衡力的作用会使传动轴发生挠曲，如果将传动轴作为挠性转子进行平衡当然比较理想，但是不符合汽车大批量生产的实际，为减少挠曲振动，利用挠性转子平衡原理，对于单根传动轴，从特殊位置进行校正，从而以二面平衡代替多面平衡是可行的。

And the conservation laws of moment and momentum are obtained by the combining the tiny element analysis method in continua mechanics with variation principle in analytical mechanics.

论文摘要：本文在建立时变边界挠性体的动力学方程时，将并入的质量对挠性体的作用当作时变边界上的表面力，并将连续介质力学中的微元分析法和分析力学中的变分原理相结合，导出了时变边界的变质量刚体的动量和动量矩矩方程。

A support structure is attached to the front or back side of a flexible circuit by direct mounting to the flexible circuit flat ribbon cable, thereby providing a stress-free region of the cable in which the flexible circuit electrical components can be mounted.

采用直接安装于挠性电路扁平带状电缆上的方法将一个支承结构固定在挠性电路的前侧或者后侧，因而在电缆上形成一个无应力区，在该区域内就可以安装挠性电路的电气元件。

Also disclosed is an aqueous painting composition has a quickly drying ability even containing a colouring resin sheet, a flexible sheet shaped surface decoration material containing flat colouring resin sheet and is not turnup even the sheet is deformed.

另外还提供一种即使含有扁平的着色树脂薄片，也能够实现速干性的组成的水性涂料组合物、以及含有扁平的着色树脂薄片、而且变形时树脂薄片不会发生起翘的挠性片状表面装饰材料。

To bias flywheel system, based on variable structure control theory, an uncoupled variable structure control law is?developed. Control law stability and robustness are analyzed at the same time.

对于许多应用卫星来说，由于天线、太阳帆板的影响，挠性干扰是个不可避免的问题，本文从工程的角度分析和仿真了带有挠性附件卫星的控制方法。

In chapter Ⅰ, a historial review of structure control is given; In chapter Ⅱ, A discussion of the controllability and observablity of flexible structures is given, Two kinds of controllability and observablity index are defined, and applied to actuator allocation; chapter Ⅲ considers the reduction of high order flexible structure mode; the content of chapter Ⅳ is about the basic problem of distributed parameter control system design. It is proved that a stable controllor in mode space may be unstable in real use in distributed paramater systems, also, by closed loop mode concept, a pole assignment method of flexible structure controllor design is given; chapter Ⅴ is about the low-authority controllor design, it is pointed out by use of high order eigenvalue/eigenvector perturbation, a better controllor can be designed; chapter Ⅳ considers flexible structure reduced order control; chapter Ⅶ disscusses the basic problem of flexible structure computer control, analyses discreate controllablity and observablity and its computing, the sample period and coefficient wordlength; chapter Ⅷ is on the problem of low flexibility compensation; chapter Ⅸ is a design example.

在第一章简要回顾了挠性结构控制的历史，并且指出控制中的一些问题；第二章讨论了挠性结构的能控性与能观性，定义了两类能控性程度和能观性程度指标，还将能控性程度概念应用于执行器位置的确定；第三章论述了高阶模型的降价问题，比较了适于挠性结构模型降阶的方法，指出其适用范围；第四章内容是分布参数系统设计的基本问题，首先证明在模态空间中设计的稳定的控制器在实际分布系统上可能是不稳定的，进而根据闭环模态的概念，获得挠性结构控制器设计的极点配置方法；第五章的内容是关于低权控制器的设计问题，指出利用特征值高价摄动和特征向量的摄动，可以设计出更加完善的低权控制器；第六章讨论挠性结构降阶控制问题；第七章讨论挠性结构计算机控制的基本问题，分析了时间离散化模型的能控性和能观性及其计算问题，讨论了采样周期选择和系数字长问题；第八章讨论低挠性结构的补偿问题；第九章的设计例子用来说明第二章和第四章的结果。

This embodiment will illustrate that the present invention of the (poly trimethylene terephthalate) PTT laminated film performs better than its PET counterpart in terms of vapor impermeability, flexibility and warpage; its vapor impermeability is about equal to a TPT back sheet, while flexibility and warpage are better than TPT back sheet.

本实施例说明本发明聚对苯二甲酸丙二醇酯薄膜复合成的叠层膜的抗水汽渗透性、挠性和翘曲度优于多层聚对苯二甲酸乙二醇酯薄膜复合形成的叠层膜，抗水汽渗透性与TPT背板基本相当，挠性和翘曲度优于TPT背板。

By analyzing the structural size of flexible shaft of the existing screw drill, the finite-element model of force analysis of the flexible shaft is established.

通过对现有某型号螺杆钻具挠性轴的结构尺寸分析，建立了挠性轴受力分析的有限元模型。

The equal rigidity design for the flexible joint of DTG is discussed in this poper,which derived the equations of calculating the axial and radial rigidity of two gimbal flexible joint inthis paper.

本文讨论了动力调谐陀螺仪挠性接头的等刚度设计，导出了双平衡环动调陀螺挠性接头轴向刚度和径向刚度的计算公式。

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。