A study on the stem friction coefficient behavior of motor-operated valves

Kang, S. C.; Park, Sungkeun; Lee, Dohwan; Kim, Yangseok; Kim, Daewoong

doi:10.1016/j.nucengdes.2011.01.017

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Stability Analysis Of the Closedloop Control System1

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2019

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“…where Φ(0)= 0 and for Inequality (8) it is true that Φ(e)e= k(e)e 2 ≥ 0 is always satisfied. This fact implies that Φ(e) always lies between the two straight lines k 1 e and k 2 e in the first and third quadrants.…”

Section: Stability Analysis Of the Closedloop Control Systemmentioning

confidence: 99%

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A Nonlinear PD Controller Design and Its Application to MOV Actuators

Son¹,

Jin²

2019

STUD INFORM CONTROL

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This paper proposes a novel design method to control the opening and closing of a valve connected with a motoroperated valve actuator. In the structure of the proposed controller, a nonlinear gain is connected in series with the linear proportional-derivative controller with a first-order filter in the denominator. The nonlinear gain is described by a simple function of the error between the set-point and the measured output. The controller parameters are optimally tuned using a genetic algorithm (GA) so that a given objective function can be minimized. The stability of the closed-loop system is assessed using the Popov stability criterion. Simulation works are done to validate the effectiveness of the proposed method.

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Section: Stability Analysis Of the Closedloop Control Systemmentioning

confidence: 99%

“…Jung, Kim & Lee (2004) constructed a testbed for a MOV stability test, and developed a basic test technique and a motor control center (MCC) diagnosis technique. Jung and Seong (2003) proposed a method of precisely estimating the MOV stem thrust, and Kang et al (2011) addressed the problem of estimating the MOV stem friction coefficient.…”

Section: Introductionmentioning

confidence: 99%

A Nonlinear PD Controller Design and Its Application to MOV Actuators

Son¹,

Jin²

2019

STUD INFORM CONTROL

View full text Add to dashboard Cite

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A study on the stem friction coefficient behavior of motor-operated valves

Cited by 1 publication

References 1 publication

A Nonlinear PD Controller Design and Its Application to MOV Actuators

A Nonlinear PD Controller Design and Its Application to MOV Actuators

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