J4 ›› 2011, Vol. 29 ›› Issue (6): 549-553.

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Design for Control System of Stepmotor Based on MSP430F169

DONG Lei1|WANG Chun-min1,2|YIN Jing1|ZHAI Hong-yi1   

  1. 1.Department of Electronic Engineening|College of Optical and Electronical Information Changchun University of Science and Technology,Changchun 130012,China;
    2. College of Instrumentation and |Electrical Engineering,Jilin University, Changchun 130021,China
  • Online:2011-11-24 Published:2011-12-06

Abstract:

A position control system of stepmotor based on MSP430F169 is designed, at the background of focus system in O-E (Optical and Electronical) theodolite. Using a potentiometer as position feedback device in this system, the internal  A/D(Analog to Digital) module in the single chip captures and converts the analog position information into digital consults. Compared to the given position setted by the keys, when the error is less than a certain threshold, the stepmotor arrives at the designated location. The hardware system consists of single chip,interface circuit, driving circuit of stepmotor, LCD(Liquid Crystal Display) circuit,and  keyboards. The stepmotor can stop at the given position setted by the keyboard, and then the LCD displays the information. In the end, this thesis exhibits the results of the control accuracy experiment(variance:0.000 003 67~0.000 012 92).

Key words: optical and electronical(O-E) theodolite;focus;stepmotor;MSP430F169 single chip

CLC Number: 

  • TP273