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Position control of pneumatic actuator using an enhancement of NPID controller based on the characteristic of rate variation nonlinear gain

Syed Najib , Syed Salim and Mohd Fua'ad , Rahmat and Ahmad 'Athif , Mohd Faudzi and Zool Hilmi, Ismail (2014) Position control of pneumatic actuator using an enhancement of NPID controller based on the characteristic of rate variation nonlinear gain. Position control of pneumatic actuator using an enhancement of NPID controller based on the characteristic of rate variation nonlinear gain, 75 (1-4). pp. 181-195. ISSN 1433-3015

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Abstract

This paper presents an enhancement of nonlinear proportional-integral-derivative (PID) controller for pneumatic positioning system by utilizing the characteristic of rate variation nonlinear gain known as multi-rate nonlinear PID controller. The proposed technique is designed and implemented to a variably loaded pneumatic actuator. To utilize the rate variation of nonlinear gain, fuzzy logic technique was used in determining the appropriate rate selection to produce a rapid response without generating a significant overshoot. Simulation and experimental tests are conducted with different kinds of input, namely, step, sinusoidal, and random wave forms to evaluate the performance of the proposed technique. The results have proven as a novel initiative at examining and identifying the characteristic based on a new proposal controller resulting from NPID controller where the transient response has improved by a factor of 7 times greater than the previous NPID technique. Moreover, the performance of pneumatic positioning system is remarkably good when operated under the variable load condition.

Item Type: Article
Uncontrolled Keywords: pneumatic positioning systems, multi-rate nonlinear PID, fuzzy logic, real-time implementation
Subjects: T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Electrical Engineering > Department of Control, Instrumentation & Automation
Depositing User: En. Syed Najib Syed Salim
Date Deposited: 30 Jan 2015 02:04
Last Modified: 28 May 2015 04:36
URI: http://eprints.utem.edu.my/id/eprint/14166

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