伺服控制

Now electropneumatic servo system is more and more emphasized which is a important kind of pneumatic technology.

做为气动技术的一个重要方面，电—气伺服控制系统如今也越来越受到人们的重视。

For the properties of high nonlinear, low frequency, low stiffness and small damp of pneumatically driven systems, it is difficult to realize high precision position servo control.

由于气压驱动系统本身具有强非线性、固有频率低、刚度低和阻尼小等特点，实现高精度的位置伺服控制比较困难。

In this paper,the position accuracy improving method of the opening CNC system based on PMAC is analyzed,the servo-control algorithm which involves PID,velocity/acceleration feed forward control and notch filter and the error compensation function provided by PMAC is discussed,the pitch error compensation and the clearance error compens.

文章分析了在基于 PMAC 的开放式数控系统中提高定位精度的具体方法，对 PMAC 所提供的&PID+速度/加速度前馈+陷波滤波器&的伺服控制算法和误差补偿功能进行了阐述，将螺距误差补偿和间隙误差补偿应用于航空航天领域某型测控系统的系统误差补偿中，取得了良好效果。

Baffle-plate of stepless adjustable length is designed on the base of the old multistage length baffle plate.

无级定尺挡板是在原多级定尺挡板的基础上设计而成，它把先进的伺服控制理论和普通液压系统相结合，实现对任意定尺的工艺要求。

In order to attain desired radial displacement of the boring bar accurately,a compounding feedforward compensation method is proposed.

研究了一种内嵌超磁致伸缩执行器的智能镗削装置，针对GMA迟滞非线性，给出了一种基于复合前馈补偿的精密伺服控制方法。

First of all, the development of stabilization and track control techniques of LOS in the world is summarized. Then the principal of how the movement of carrier can be isolated with a LOS system is analyzed theoretically based on the actual situation of the car-borne equipment. Furthermore, adopting the digital servo control as its key technique, the general scheme design is outlined.

首先，在介绍了国内外视轴稳定与跟踪技术发展的基础上，结合车载设备的实际情况，从理论上分析了视轴稳定系统隔离载体角运动的原理，并在此基础上阐述了以数字伺服控制为核心的系统总体方案设计。

With manual tracking as research subject, the model of stabilization servo control system was established based on the concept of two gimbals, four axes design.

根据四框架稳瞄系统的工作原理，以手动跟踪模式为主要研究对象，建立了稳瞄伺服控制系统模型。

Before cell injected, the error matrix is calculated from servoing control equation to calibrate injection system , by which the coordinate transform error between vision system and micromanipulator system is minished.

细胞注射前，利用伺服控制方程计算的误差矩阵对系统进行标定，减小显微视觉系统和机械手系统间的坐标变换误差。

Semi-closed loop servo control, the use of variable frequency stepless speed spindle, spindle plus encoder can be car thread, and realize cutting Constant Linear Velocity.

采用半闭环伺服控制，主轴采用变频无级调速，主轴加编码器，可以车螺纹，并实现恒线速度切削。

The proportional servo valve controls the charger motion to enable adjustable feeding speeds in sections as well as stable and even feeding.

比例伺服控制料车运动，布料速度分段可调，使料车运行平稳，布料均匀。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。