Dynamics of feed water flow rate control system with low- noise regulator

Abstract

We present the results of modeling a feed water control system. The system contains two regulatory devices – the feed valve to control the flow rate, with electrohydraulic control, and the throttle valve to maintain constant pressure differential on the feed valve, with hydromechanical control. The valves have perforated flow parts to reduce hydrodynamic noise and vibration, which necessitates checking the dynamical characteristics of the system. The model was developed on the basis of equations describing the electrohydraulic converter dynamics, a differential pressure meter, a servo drive and flow parts with the use of Matlab Simulink. The modeling of dynamical processes caused by various disturbance inputs and control actions showed the compliance of the system with the requirements imposed on it.

About the authors

E. G. Berestovitskiy

Concern “Avrora” Scientific Production Association, Saint-Petersburg

Author for correspondence.
Email: berest40@mail.ru

Doctor of Science (Engineering)

Chief Acoustician

Russian Federation

P. I. Kizilov

Concern “Avrora” Scientific Production Association, Saint-Petersburg

Email: mail@avrorasystems.com

Engineer, Center of Development and Testing of Electrohydraulics

Russian Federation

A. N. Kruchkov

Samara National Research University

Email: kan@ssau.ru

Doctor of Science (Engineering)

Professor of the Department of Power Plant Automatic Systems

Russian Federation

N. V. Pialov

Concern “Avrora” Scientific Production Association, Saint-Petersburg

Email: afx7cu@mail.ru

Candidate of Science (Engineering)

Head of the Center of Development and Testing of Electrohydraulics

Russian Federation

References

  1. Reshetnikov E.M., Sablin Y.A., Grigoriev V.E., Mrochkovskiy N.N. Elektromek-hanicheskie preobrazovateli gidravlicheskikh i gazovykh privodov [Electromechanical con-verters of hydraulic and gas drives]. Moscow: Mashinostroenie Publ., 1982. 144 p.
  2. Kramskoy E.I. Gidravlicheskie sledyashchie privody so struynymi usilitelyami [Hy-draulic follower drives with fluid amplifiers]. Leningrad: Mashinostroenie Publ., 1972. 144 p.
  3. Povkh I.L. Tekhnicheskaya gidromekhanika [Engineering hydromechanics]. Lenin-grad: Mashinostroenie Publ., 1976. 504 p.

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