Prediction Model of Control Valve Characteristics

Xie, Yu Dong; Liu, Yan Jun; Wang, Yong

doi:10.4028/www.scientific.net/AMR.605-607.1345

Paper Titles

Research on Pneumatic Performance of Aero-Engine Blades through Function Method
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Study on De-Icing Fluid Pump Station’s Flow Pulsation Suspension Methods
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Simulation of the HCCI Combustion Based on Single-Zone Combustion Model
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Design and Implementation of the Integrated Test Platform for the Hydraulic Components
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Prediction Model of Control Valve Characteristics
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Numerical Simulation of Convection Heat Transfer in a Plate Channel with Sintered Copper Porous Ribs
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Theoretical Study of Transmissivity of Electromagnetic Wave in Magnetorheological Fluids
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Research on Maximum Wind Energy Capturing of DFIG
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The Research of Internal Fluid State Influence in the Divergency of the Straight Cone-Shape Draft Tube
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HomeAdvanced Materials ResearchAdvanced Designs and Researches for ManufacturingPrediction Model of Control Valve Characteristics

Prediction Model of Control Valve Characteristics

Abstract:

Control valves are generally present whenever fluid flow regulation is required. The control valve reliability is critical to the control quality and safety of a plant. An improved dynamic and static valve behaviour would have a major impact on the process output. In order to assess the dynamic performance of the control valve, a computer model of an electro-hydraulic control valve is developed. And the control valve characteristics are investigated through the use of mathematical simulations of the control valve dynamic performance. The results show that the electro-hydraulic driven control valve, which is developed to regulate the mixed-gas pressure in combined cycle power plant, can meet the challenge of the gas turbine.

Info:

Periodical:

Advanced Materials Research (Volumes 605-607)

Main Theme:

Advanced Designs and Researches for Manufacturing

Edited by:

Pengcheng Wang, Xiangdong Liu and Yongquan Han

Pages:

1345-1349

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.605-607.1345

Citation:

Y. D. Xie et al., "Prediction Model of Control Valve Characteristics", Advanced Materials Research, Vols. 605-607, pp. 1345-1349, 2013

Online since:

December 2012

Authors:

Yu Dong Xie, Yan Jun Liu, Yong Wang

Keywords:

Control Valve, Dynamic Performance, Prediction Model, Process Control

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References

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[7] Y. D. Xie, Y. J. Liu and Y. Wang: Applied Mechanics and Materials Vol. 99-100 (2011), pp.901-905.

Paper TitlePages

Electro-Hydraulic Actuator System Control via Pole Assignment Controler and Minimum Variance Controller

Authors: Sazilah Salleh, Mohd Fua'ad Rahmat, Siti Marhainis Othman

Abstract: Precise control is necessary in controlling electro-hydraulic actuator system (EHAS). However due to its nonlinearities and uncertainties, controlling hydraulic actuator system had become a challenging task that need to be solved. A proper controller can be designed when an accurate model of a system is defined. In this paper, the process to obtain an EHAS system’s model by using system identification approached is presented. System identification is chosen because this technique only requires input and output data from system in order to obtain system model. An ARX model is chosen as a model structure for EHAS. A pole assignment controller and minimum variance controller (MVC) is later been designed based on the obtained model. The simulation result shows that both controllers manage to regulate at the desired input signal. However MVC controller prove to provide a better output performance compared to pole assignment controller by minimizing the phase lagging and having a better rise time.

265

Research of Velocity Stability of Separate Meter in and Separate Meter out Control System for Over-Running Load

Authors: Zhong Yi Cao, Xin Ming Liu, Wan Rong Wu

Abstract: There are some defects in the traditional over-running load hydraulic system, such as velocity control is poor and prone to velocity jitter, etc. In order to improve these weaknesses, the components and work principle of the separate meter in and separate meter out (SMISMO) were introduced and the actuator’s feature were analyzed , the simulation model of hydraulic studied system was built, the factors affecting the stability of the system are discussed in this paper. Simulation and experiment showed that the novel control system possessed higher velocity control precise and good stable characteristics.

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