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Equipment and algorithm of automatical
light adjustment for laser demarcation device |
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract As a precision measuring instrument widely used in several workplaces to calibrate reference lines, the light calibration of current laser demarcation device is timeconsuming with poor precision. In order to calibrate the light quickly and meet the accuracy requirements, the structure of laser demarcation device was improved to design an automatical light adjusting system with industrial computer as control core according to the lucubrating numerous light calibrating theories, methods and system. The linear CCD was used to realize rapid detection of lights, and several servo motors were used to screw adjusting screws in and out to calibrate the laser lights quickly and precisely. PID algorithm and fuzzy control algorithm combined with Matlab simulation software were used to conduct simulation comparison of light calibration. The simulation results show that the design of PID control is simple with short setting time, while it is more sensitive to parameters change of object with over shooting and bad robustness.The adjusting process of fuzzy control is smooth with small overshooting, and it is not sensitive to parameters change of object with good robustness. Fuzzy control algorithm is suitable to light calibration.
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