转台

Rotating platform is a normal stage machine. In view of its speed regulation system, a scheme of digital AC speed regulation system base on permanent magnet synchronous motor is presented.

旋转台是一种常用的舞台机械设备，本文针对转台调速系统，提出了基于永磁同步电机的数字化转台交流调速系统的实现方案。

Aiming at the problems of assembly interference and maintainability in the processing of radar rotating platform structural design, virtual reality technology is introduced into the design process.

针对雷达转台结构设计中易出现装配干涉和维修性考虑不足等方面的问题，将虚拟现实技术引入设计过程，提出了应用虚拟现实技术进行雷达转台结构设计的流程。

In this paper, the nonlinear mathematical model of valve-controlled motor servomechanism is derived and the linear mathematical model for electrohydraulic position servo system is obtained on the basis of known parameters.

由于液压仿真转台的每个框架都是由液压马达直接驱动，因此每个通道都是一个典型的电液位置伺服系统，转台的性能与每个通道的性能密切相关。

After synthesizing a lot of related literatures, the paper brief review the studying status of the simulator position servo system, the development of the servomotor and the key technology of simulator.

在查阅了大量相关文献的基础上，文章简要的回顾了仿真转台位置伺服系统研究进展及伺服马达的发展概况和仿真转台的关键技术。

The mode analysis indicated that the precision opto-electronic tracking turntable frame had good dynamic characteristics, and syntony did not occur.

分析结果验证了光电跟踪转台机械结构设计的合理性，也为光电跟踪转台的优化设计提供了重要依据。

Because on the turnplate axis power is by the turnplate under after the bevel gear commutation, decelerates transmits, moreover their velocity ratio is 6, also because the bevel gear velocity ratio is not bigger than 3 generally, therefore has designed two axes, by realizes the bevel gear two commutation, decelerates.

因为转台上的轴动力是由转台下经锥齿轮换向、减速传来的，而且它们的传动比为6，又因为锥齿轮的传动比一般不大于3，所以多设计了两根轴，以实现锥齿轮的两次换向、减速。

But what of an observer B, placed at the centre of the turntable and rotating with it?

但是对于位于转台中间并和转台一起旋转的观察者 B 来讲来说又是怎样呢？

The remote control and data acquisition system of GST-1 three-axis turntable is designed and manufactured. It can not only control all the work states of the turntable, but acquisite 6 channels digital signals and 6 channels analog signals as well. The system is powerful and has high accuracy of data acquisition. It is the important guarantee to realize automatical test of intertial sensor and system.

设计和参与研制了GST-1型三轴转台计算机远控及数据采集系统，并进行了实际调试，该系统不仅可以程序控制转台的所有工作状态，而且能够同时采集被测对象的六路数字信号和六路模拟信号，功能强大，数据采集精度高，是实现惯性仪表和惯性系统自动化测试的重要保障。

The feedback controller and prefilter were designed using QFT, which make up of the control system of a certain flight simulator.

采用QFT设计了某型飞行仿真转台的反馈控制器和前置滤波器，组成了转台的控制系统。

There are many nonlinear factors, such as the flections and out of shape of the FMS axes, the gaps of the transmission fraction, that make the FMS to be nonlinear dynamic system. Those nonlinear factors reduce the performance level of the FMS.

随着飞行器的性能的提高，对飞行转台系统也提出了许多更高的技术要求，从国内外发展趋势来看，&高频响、高精度、高鲁棒性、高可靠性&是伺服转台系统主要性能指标和发展方向。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。