Stepper motor is a key component in mechatronic product, one is often used as a positioning control and constant speed control.

步进电机是机电一体化产品中关键部件之一，通常被用作定位控制和定速控制。

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A new micro-positioning control system using PZT for ultra-precision grinding was designed. The functions of this system include measure, compensate, drive, etc.

介绍了一种最新开发的面向精密磨床的压电陶瓷驱动微进给控制系统，该系统是一个驱动、检测和补偿为一体的闭环系统。

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The essential structure of this system is presented, an efficient arithmetic of automatic positioning control is introduced, and several relevant data in a practical case also are given.

文中介绍了该系统的基本结构，阐述了自动定位控制的一种有效算法，给出了在一个实际应用中所达到的控制效果的有关数据。

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And in 2005 EADS Sodern, a French maker of satellites' control and positioning systems and subsidiary of the Franco-German company EADS, said it would start to phase out its American supplier base.

ECONOMIST: Space technology

Mr Mahdavi says his technique could control the size and positioning of the bubbles in such foam, and so determine the material's strength and rigidity.

ECONOMIST: MONITOR

The current 3D camera module developed by Sharp incorporates functions to process the image data output by the left and right cameras, including Color Synchronizing Processing to adjust color and brightness, Timing Synchronizing Processing to synchronize the timing of the video signals, and Optical Axis Control Processing to correct positioning.

ENGADGET: Sharp busts out world's first 3D HD camera for mobile devices