圆盘

Rotating disks are the basic mechanical element of steam and gas turbines, grinding wheels, circular saws, and computer disk memories.

旋转圆盘是工业中应用广泛的一种基本机械元件，它广泛的应用于旋转机械，诸如涡轮机、圆锯、计算机硬盘等，上述系统中这些盘类结构严重的横向振动将使机器工作时的精度降低﹑动态性能下降以及造成被加工材料的浪费，严重时甚至使圆盘元件损坏。

Something resembling a flat, circular plate; a disk.

圆盘呈扁圆盘状的东西；圆盘

Because any reports on the active control of rotating disk haven't be seen in China up to now, and this experiment research is important, so the complete set of active control system of rotating disk are built independently. The push-pull type electromagnet is applied to control the vibration of the circular disk. The power amplifier circuit that can respond to wide scope in frequency from DC to AC is designed by improving the existing circuit. The sensor signal is first low-pass filtered, then the proportional control plus the differential control circuit easy used in practice are applied to finish the more effective control. The electromagnetism shield is used as possible to decrease the signal disturbance from the electromagnet to eddy sensor.

考虑到目前国内尚未见到有关旋转圆盘振动主动控制的相关报导以及实验的重要性，自行设计制作了一整套旋转圆盘振动主动控制系统：提出并采用推拉型电磁作动器来控制圆盘的振动；在改进现有电路的基础上，自行设计了具有较理想特性的驱动电磁作动器的功率放大器；根据实际控制环境的特点，设计了先进行低通滤波，再采用比例和实用的近似微分电路构成的控制器，并采用了电磁屏蔽来减小电磁铁对传感器的干扰，以实现更有效的控制。

Rotating disks are the basic mechanical element of steam and gas turbines, grinding wheels, circular saws, and computer disk memories. Large amplitude transverse vibration of rotating disks can cause failure of turbine wheels due to wheel-case contact, cutting inaccuracy for grinding wheels and circular saws, the waste in material and head-tracking errors in computer disk memories.

旋转圆盘是工业中应用广泛的一种基本机械元件，它广泛的应用于旋转机械，诸如涡轮机、圆锯、计算机硬盘等，上述系统中这些盘类结构严重的横向振动将使机器工作时的精度降低、动态性能下降以及造成被加工材料的浪费，严重时甚至使圆盘元件损坏。

In the case that the flow type is of cylindrically symmetry, the thickness of airstream layer driven by rotating disk was discussed with the method of dimension analysis.

从圆盘风机的特点出发，分析了单个圆盘转动时，其表面带动气体的流动情况；在轴对称流动的假定下，用量纲分析法，探讨了圆盘所能带动气流层的厚度。

Based on the mechanical analysis of rotary pan, the axisymmetrical model and non-axisymmetrical one were proposed respectively by simplifying the effect of lacing wires on pan into ring distribution uniform load or force and were solved according to the flexure theory of thin plate with small deflection.

在分析工作状态下转子圆盘受力的基础上，将拉筋对圆盘的作用分别简化成环形均布载荷和集中载荷，建立承压圆盘的轴对称模型和非轴对称模型，并根据薄板的小挠度弯曲理论，对力学模型进行求解。

On the base of the analysis of the static fbd under diametric compression , numerical analysis and compare are performed on the dynamic stress field of the brazilian disk and fbd used in the testing tensile strength under shpb

在对静态平台压缩巴西圆盘进行的数值分析的基础上，本文分析了shpb动态劈裂拉伸实验中巴西圆盘和平台巴西圆盘的动态应力场，并对结果进行了比较。

The disc type counter current chromatographic separation column comprises at least a or a plurality of discs provided with designing slots, clapboards at two sides of each disc, the cylinder rotating axis, an upper flange and a lower flange; the cylinder rotating axis is hollow and passes through the center of the upper flange, the lower flange, the discs and the clapboards; the inner edge and the outer edge of the upper flange, the lower flange, the discs and the clapboards are provided with a plurality of bolt pieces that fix the upper flange, the lower flange, the discs and the clapboards together.

一种多功能高效逆流色谱仪，它由盘式逆流色谱分离柱、配重体、行星架、柱体自转轴、行星轮、中心轮、中心公转轴、电机、传动装置、速度控制装置和保温机箱组成；所述的盘式逆流色谱分离柱，它包括有至少一个或多个设槽的圆盘、每个圆盘两侧的隔板、柱体自转轴和上法兰、下法兰；所述的柱体自转轴为空心，贯穿在上法兰、下法兰、圆盘及隔板的中心；在上法兰、下法兰、圆盘及隔板的内外边缘设有多个螺栓部件，将上、下法兰、圆盘及隔板固定在一起。

It is worth to be noted that the needed driving current to the MR valve with both annular and radial damping gaps is less than that to the MR valve with annular damping gaps under the cut-off state of the MR valves, which show that the MR valve with both annular and radial damping gaps consumes less energy.

测试结果显示：（1）在相同的工作条件下，同时具有圆环和圆盘阻尼间隙的磁流变阀产生的压降更明显；（2）处于截止状态时，同时具有圆环和圆盘阻尼间隙的磁流变阀的激励电流明显小于具有圆环阻尼间隙的磁流变阀的激励电流，因此采用同时具有圆环和圆盘阻尼间隙的磁流变阀可以节约能量的消耗。

Of a dish and a dish use the work word steel the welding pays to accept, a dish inner part adoption the Cape iron and the slot steel welding become whole framework, because of conveyance space limit, each dish is divided into two part, combination hour in the interval adoption M18 fix the stud bolt connects with each other to counteract the electric welding 焊 dead, the shape bottom use 8100 mms work word steel welding be used as to pay to accept, and with before install work well of the cement pillar foundation sprinkle to cast into the integral whole.

圆盘与圆盘之间用工字钢焊接支承，圆盘内部采用角铁与槽钢焊接成整体骨架，由于运输空间限制，每一圆盘分为两部分，组合时其间采用M18固定螺栓相连并用电焊焊死，造型底部用8根100mm工字钢焊接做为支承，并与安装前做好的水泥柱基础浇铸成一体。

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。