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Highly flexible arm front facing hard non -contact measurement and Implementation

Author: YangXu
Tutor: LouYunJiang；ChenZhengLiang
School: Harbin Institute of Technology
Course: Control Science and Engineering
Keywords: Flexible arm Laser triangulation Visual Positioning OpenCV
CLC: TP333.35
Type: Master's thesis
Year: 2009
Downloads: 17
Quote: 0
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Abstract


Flexible arm is one of the key components of the hard disk , often in the production process of the elastic arms around the various parameters were measured to obtain and control parameter changes, one of the key parameter is the front height. Company currently has a number of flexible arm front height measuring device , but there are some drawbacks. The purpose of this paper is to develop a new type of flexible arm front height measuring equipment to meet the measurement needs. Since the non -contact measurement mechanism without mechanical contact with the product will not cause damage to the product , this article first of several common non-contact measurement methods were studied , comparing the decision to adopt one of the front-end laser triangulation method for height measurements, thus chose Omron smart laser sensor , and according to the height of the front end of the flexible arm hard definition of design measurement solutions. In the experimental verification of the premise of the program feasible , the choice of motion control card , servo motors and drives, industrial cameras set up measuring equipment hardware platform. This measuring device is also designed software system , including motion control unit , serial communication unit, an image processing unit and data processing and analysis unit, wherein the image processing section using OpenCV image processing library implemented laser sensor spot positioning, product circular hole with Slotted hole positioning , product positioning information combining these measurement algorithms can be realized with the front end of the flexible arm height measurements. After a lot of experiments and a number of improvements, the device's measurement results finally passed the test repeatability and correlation , which verifies the reliability of the equipment and measurement method is feasible. Our equipment has reached the design objectives, in terms of output rates and have a very good cost control . To measure automation to create a good prospect.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory > Magnetic memory drive > Disk memory
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