Positioning control of an X-Y table

Decade by decade, the industry still has favored classical controllers such as PID and/or lead-lag elements, due to their structure simplicity, high adaptability, easy understanding and design. There features are significant in selecting controller design procedure for industrial application. However, the classical controllers have met limitation when higher positioning and robust performances are required.

This research proposed nominal characteristic trajectory following (NCTF) controller as a practical control which emphasizes a simple and straightforward design procedure in order to achieve the promising results in positioning and continuous motion control as the end objectives.

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