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Research & Realization on the Planar Digital Servo System Based on Laser-Measure-Margin-Apparatus

Author: YouJia
Tutor: HeJianYing
School: Wuhan University
Course: Circuits and Systems
Keywords: 2D servo system Digital PID algorithm Ring scan algorithm Speed ??control algorithm
CLC: TN249
Type: Master's thesis
Year: 2005
Downloads: 188
Quote: 0
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Abstract


Paper developed a high - performance two-dimensional servo system is applied on the laser gage , the servo motor as a power of the laser probe according to a predetermined trajectory , automatically scans the entire surface of the measured object , the trajectory of the probe after , timing of starting the measurement system. This thesis, two aspects from the software and hardware design , digital PID algorithm is the main consideration in terms of software design , the ring scanning algorithm , as well as speed control algorithm , so that the scanning point trajectory in accordance with the curve regular exercise , such as a flat spiral , space spiral , etc. , and speed of the scanning point to the actual measurement needs ; On the hardware side , the three high-performance digital servo system , a C8051F020 microcontroller - based servo system design and implementation of the system depends mainly on software programming , using digital PID algorithm , the ring scan algorithm as well as speed control algorithm to control the laser probe movement in accordance with a predetermined scanning trajectory , the design of the system taking into account the future is very convenient system expansion , extended functionality can be achieved simply by adding other subroutine modules . Another special chip - based servo system design and implementation , and the use of intelligent motion control processor LM629 and H-Bridge driver chips LMD18200 use inexpensive ATMEL89C51 microcontroller , just sent to the LM629 motion control instructions , you can achieve a high precision motion control , thereby controlling the laser probe movement in accordance with a predetermined scan locus . The system taking into account the system hardware device is small , easy programming . The third is to manually adjust system design , by manually adjusting the horizontal and vertical knobs can control two motor sports , the fine-tuning of the laser probe . The three schemes realization of the system control circuit, drive and protection circuits . Experimental results show that the three control methods and high precision , fast response , easy to achieve , can accurately control the movement of the laser probe predetermined trajectory .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Photonics technology,laser technology > Laser technology, the maser > Laser applications
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