![DSpace logo](/jspui/image/logo.gif)
Please use this identifier to cite or link to this item:
http://dspace.bits-pilani.ac.in:8080/jspui/xmlui/handle/123456789/9871
Title: | An online tuned novel nonlinear PI controller for stiction compensation in pneumatic control valves |
Authors: | Mishra, Puneet |
Keywords: | EEE Stiction Deadband Limit cycles Pneumatic Control Valve Nonlinear PI controller Flow control |
Issue Date: | Sep-2015 |
Publisher: | Elsevier |
Abstract: | A novel Nonlinear PI Controller (NPIC) has been proposed for effective control of flow process employing a sticky pneumatic control valve. The proposed control scheme has been inherited from a classical PI control structure with a difference that the integral gain has been varied in accordance with the instantaneous error and the rate of change of error. The tuning of controller has been carried out online using Differential Evolution algorithm. To evaluate the effectiveness of the proposed controller, a comparative study with the conventional PI controller has also been carried out for the setpoint tracking, disturbance rejection and robustness to parameter uncertainties on account of operating point change on a laboratory scale nonlinear flow process. Based on these intensive experimental evidences, it has been concluded that the NPIC performed far better than the conventional PI controller for all the case studies and suppressed effectively any stiction induced oscillations. |
URI: | https://www.sciencedirect.com/science/article/pii/S0019057815001226 http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/9871 |
Appears in Collections: | Department of Electrical and Electronics Engineering |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.