Automatic Positioning Closed-Loop Control Cystem Design of Linear Time Grating Sensor

Abstract:

A high-precise automatic positioning system for data sample of linear time grating sensor is designed. In order to achieve linear time grating sensor of data sample, improve measure work efficiency, an ARM MCU is used as a major chip to control the stepper motor to rotate. In this way, the stepper motor drives the ball screw, the moving probe of linear time grating sensor and reading head of linear grating to move synchronously. A high-precision automatic positioning of the system hardware is designed. In addition, ARM controlling circuits and stepper motor driving circuits are designed. Therefore, the special communication interface is designed for the high-precision automatic positioning system, receiving the feedback signal from time grating sensor, forming a high-precision closed loop control system, and communicating with upper computer by serial. Experiment results prove that the positioning precision of control system can reach 0.1 um.

• Periodical: Advanced Materials Research (Volumes 328-330)
• Pages: 2121-2124
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.328-330.2121
• Online since: September 2011
• Authors: Tian Heng Zhang, Dong Lin Peng, Ji Sen Yang, Xian Quan Wang, Chun Dong
• Keywords: ARM, Closed-Loop Control, High-Precision Automatic Positioning, Linear Time Grating Sensor, Stepper Motor

References

[1] D.L. Peng, X.H. Zhang, X.K. Liu and X.H. Chen: Chinese Journal of Science Instrument, 2006, 27(4), p.423. (In Chinese).

[2] D.L. Peng, X.K. Liu, X.H. Zhang and X.H. Chen: Chinese Journal of Mechanical Engineering, 2005, 41 (12), p.128. (In Chinese).

[3] L.G. Zhou, H. Zhang: Pellucid ARM7_LPC213x/214x (first volume) [M]. Beijing: Beijing Aerospace University Press, 2005, p.227. (In Chinese).

[4] L.G. Zhou, H. Zhang: Pellucid ARM7_LPC213x/214x (second volume) [M]. Beijing: Beijing Aerospace University Press, 2006, p.127. (In Chinese).

[5] X.M. Wang: The Single-chip Microcomputer Control Motors [M]. Beijing: Beijing Aerospace University Press, 2007, p.115. (In Chinese).