A Model Free Approach for Online Stiction Compensation

Arifin, Bustanul; Munaro, Celso J.; Choudhury, M.A.A. Shoukat; Shah, Sirish L.

doi:10.3182/20140824-6-za-1003.02145

Cited by 10 publications

(9 citation statements)

References 12 publications

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“…Arifin and colleagues [38] came up with a model-free approach to reduce oscillations and avoid unnecessary valve movements based on the knocker signal approach. Assuming that stiction is the source of the nonlinearity, the knocker signal is made to be a function of the amplitude of pulses and the absolute error.…”

Section: Stiction Compensation Methods Can Be Classified Into Non-model-based and Modelbased Methodsmentioning

confidence: 99%

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Generic framework for valve stiction detection and compensation with ANFIS-activated dual-mode MPC

Jeremiah

Zabiri

Ramasamy

et al. 2019

Journal of Process Control

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Section: Stiction Compensation Methods Can Be Classified Into Non-model-based and Modelbased Methodsmentioning

confidence: 99%

“…• Susceptible to disturbances as it requires open loop movements Arifin method [38] • Avoids unnecessary valve movements…”

Section: Methods Strengths Limitationsmentioning

confidence: 99%

Generic framework for valve stiction detection and compensation with ANFIS-activated dual-mode MPC

Jeremiah

Zabiri

Ramasamy

et al. 2019

Journal of Process Control

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“…The purpose of control valve stiction compensation is to increase the control loop performance 10 and thereby continue production with minimum impact of valve stiction. To deal with the valve stiction problem, the first step is to detect sticky control valves and then quantify the severity of the stiction.…”

Section: Brief Description Of Stiction Compensatorsmentioning

confidence: 99%

“…where A is the amplitude of the sine wave (A = 2a), ω is the frequency of the sine wave (ω = 2πf), and f = 1/T. A and ω are calculated from the oscillatory response of the process output 10 proposed a model-free stiction compensation technique, where the compensating signal is a function of control error. A small error produces little or no valve movement.…”

Section: Brief Description Of Stiction Compensatorsmentioning

confidence: 99%

Control Valve Stiction Compensation - Part II: Performance Analysis of Different Stiction Compensation Methods

Nahid

Iftakher

Choudhury

2019

Ind. Eng. Chem. Res.

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Control valves are important elements of control loops. Stiction in control valves limits the performance of control loops. It decreases the life of control valves. Minimizing the negative impact of sticky control valves can improve the performance of control loops. This is the second part of a two-part study on control valve stiction compensation. In the first part, a novel stiction compensation method has been proposed. This second part compares the performance of the proposed stiction compensator described in Part I with six other important stiction compensators that have appeared in the literature. The proposed compensator performs better than any of the other six compensators.

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“…Arifin et al 15 designed the compensating signal as the product of the error signal and controller output signal. The performance of the method was not satisfactory since it cannot minimize process oscillations satisfactorily.…”

Section: Introductionmentioning

confidence: 99%

Control Valve Stiction Compensation - Part I: A New Method for Compensating Control Valve Stiction

Nahid

Iftakher

Choudhury

2019

Ind. Eng. Chem. Res.

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Valve stiction is a hidden menace in process control loops. The presence of stiction in control valves limits the control loop performance. Compensation of its effect is beneficial before the sticky valve can be sent for maintenance. This work is the first of a two part study on control valve stiction compensation. This part proposes a novel stiction compensation method, while the second part compares the performance of this proposed stiction compensation method with some of other compensation methods appeared in the literature. The proposed compensator is developed based on reduction of control action and addition of an extra pulse of finite energy as required. A method for estimating an appropriate parameter for reducing controller action has been developed. The proposed stiction compensator has been extensively evaluated using the MATLAB Simulink environment. The compensator has also been implemented in a pilot plant experimental setup. It has been found to be successful in removing valve stiction-induced oscillations from process variables both in simulation and pilot plant experimentation. The compensator developed in this study has the capability of reducing process variability with a minimum number of valve reversals.

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A Model Free Approach for Online Stiction Compensation

Cited by 10 publications

References 12 publications

Generic framework for valve stiction detection and compensation with ANFIS-activated dual-mode MPC

Generic framework for valve stiction detection and compensation with ANFIS-activated dual-mode MPC

Control Valve Stiction Compensation - Part II: Performance Analysis of Different Stiction Compensation Methods

Control Valve Stiction Compensation - Part I: A New Method for Compensating Control Valve Stiction

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