Dual solenoid closed-loop position control system implemented in a micrologix 1500

Narciso Macia, Sapto Susilo

    Research output: Chapter in Book/Report/Conference proceedingConference contribution


    This paper presents a closed-loop, position control system, using two interconnected, DC solenoids in a pull-pull arrangement, and controlled by an Allen-Bradley, MicroLogix 1500 LRP, Programmable Logic Controller (PLC). This PLC, and similar equipment possessing A/D and D/A modules, are excellent vehicles for teaching closed-loop control, since they are easy to program and do not require a substantial background in programming. This feature makes it very attractive since our control classes and laboratories are populated by students from mechanical, manufacturing and electronic backgrounds. In addition, this particular PLC has built-in data acquisition capabilities, making it ideal for comparing theoretical responses (obtained by simulating a SIMULINK-based model) with that of the actual hardware. Further, PLCs are extremely common in industrial and manufacturing environments, and the student's familiarity with them can serve as an added bonus in seeking employment. This paper presents the modeling, parameter estimation, and simulation procedures. The setup can also be easily modified so that it is controlled by other types of controllers (microcontroller-based, PC-based controllers such as Lab VIEW. This set-up can also be used by graduate students to investigate second-order-type effects. This hardware has been effective in enhancing student understanding and retention of control system theory.

    Original languageEnglish (US)
    Title of host publicationASEE Annual Conference and Exposition, Conference Proceedings
    StatePublished - 2006
    Event113th Annual ASEE Conference and Exposition, 2006 - Chicago, IL, United States
    Duration: Jun 18 2006Jun 21 2006


    Other113th Annual ASEE Conference and Exposition, 2006
    Country/TerritoryUnited States
    CityChicago, IL

    ASJC Scopus subject areas

    • Engineering(all)


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