The Research of a Piezoelectric Valve Positioner Control Algorithm

Fei Li; You Jun Fan; Hua Tian Zhao

doi:10.4028/www.scientific.net/AMR.1030-1032.1565

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1030-1032The Research of a Piezoelectric Valve Positioner...

The Research of a Piezoelectric Valve Positioner Control Algorithm

Abstract:

The dynamic characteristic of smart valve positioner is nonlinear in its operational range, while the traditional five-step method or a single switch PID control algorithm could not meet a nonlinear model uncertain control system for high-speed, high-precision control. This paper presents a new control algorithm which five-step switching method with backward PWM and PID control method combines, it realize that the opening degree of the valve is fast and accurate positioning under conditions in nonlinear. The experimental result show that the control algorithm is better than the five-step control method and PID control algorithm, and the algorithm is simple, high reliability, speed control, and have certain adaptive and robustness, valve positioning accuracy to meet the control requirerments.

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Periodical:

Advanced Materials Research (Volumes 1030-1032)

Pages:

1565-1569

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1030-1032.1565

Citation:

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Online since:

September 2014

Authors:

Fei Li*, You Jun Fan, Hua Tian Zhao

Keywords:

Five-Step Switching Method, Negative PWM, PID Control Algorithm, Piezoelectric Valve Positioner, Positive, Robustness

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* - Corresponding Author

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