Design of Chromatographic Test Robot Based on Universal Robot Controller
In view of the demand for fast response and fully automated control of insulation oil chromatography analysis,a chroma-tographic test robot control scheme was proposed based on the intelligent universal robot controller of a company.The control and data interaction between the controller and servo was achieved through EtherCAT industrial bus,and an external industrial control board ex-tension system was introduced based on AtMega2560 to achieve input and output control of multiple external devices.The control and in-teraction of controller,chromatograph and oscillometer were realized through the communication mode of upper computer,thus achieving fully automated control of the insulation oil chromatography analysis process.The bottled oil samples to be analyzed was placed in the oil sample storage area,the quantity and type of oil samples were selected through the upper computer,and the chromatography analysis control system was started to automatically complete the entire process of oil sample preparation,oscillation separation,oil gas separation and chromatography analysis.This control scheme is easy to operate and easy to maintain in the later stage.The test verification was per-formed through actual oil samples.The results show that the control scheme has stable and efficient performance,and the repeatability and accuracy of component analysis of insulation oil meet the requirements of national standards.
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