In this paper, the dynamic performance of an unconventional two-spool flow control servovalve using a pressure control pilot is analyzed. Such valves are less expensive than typical servovalves but also tend to be limited in their dynamic performance. Based on a previously developed eight state nonlinear model, we develop a simplified linear model which is able to capture the essential dynamics of the valve. Using root locus analysis method, the limitation in dynamic performance is shown to be due to a “zero” introduced by the structure of the interconnection of the subsystems. Design parameters that move the zero further to the left half plane, and do not adversely affect other steady-state criteria are identified. The effectiveness of these parameters to improve the dynamic performance is demonstrated. This analysis demonstrates how the structure of the interactions between subsystems in a dynamic component, such as a hydraulic valve, can critically limit the dynamic performance of the component.
Skip Nav Destination
Article navigation
September 2002
Technical Papers
Dynamic Redesign of a Flow Control Servovalve Using a Pressure Control Pilot1
Perry Y. Li
Perry Y. Li
Department of Mechanical Engineering, University of Minnesota, 111 Church St. SE, Minneapolis, MN 55455
Search for other works by this author on:
Perry Y. Li
Department of Mechanical Engineering, University of Minnesota, 111 Church St. SE, Minneapolis, MN 55455
Contributed by the Dynamic Systems and Control Division for publication in the JOURNAL OF DYNAMIC SYSTEMS, MEASUREMENT, AND CONTROL. Manuscript received by the Dynamic Systems and Control Division February 1, 2001. Associate Editor: N. Manring.
J. Dyn. Sys., Meas., Control. Sep 2002, 124(3): 428-434 (7 pages)
Published Online: July 23, 2002
Article history
Received:
February 1, 2001
Online:
July 23, 2002
Citation
Li, P. Y. (July 23, 2002). "Dynamic Redesign of a Flow Control Servovalve Using a Pressure Control Pilot." ASME. J. Dyn. Sys., Meas., Control. September 2002; 124(3): 428–434. https://doi.org/10.1115/1.1485288
Download citation file:
Get Email Alerts
Fault detection of automotive engine system based on Canonical Variate Analysis combined with Bhattacharyya Distance
J. Dyn. Sys., Meas., Control
Multi Combustor Turbine Engine Acceleration Process Control Law Design
J. Dyn. Sys., Meas., Control (July 2025)
Related Articles
Mathematical Modeling of a Two Spool Flow Control Servovalve Using a Pressure Control Pilot
J. Dyn. Sys., Meas., Control (September,2002)
Experimental Based Analysis of the Pressure Control Characteristics of an Oil Hydraulic Three-Way On/Off Solenoid Valve Controlled by PWM Signal
J. Dyn. Sys., Meas., Control (March,2002)
Control System Simulators for Gas-Liquid Cylindrical Cyclone Separators
J. Energy Resour. Technol (December,2000)
Auto-calibration Based Control and Its Application to a Kind of Electrohydraulic Poppet Valves
J. Dyn. Sys., Meas., Control (November,2011)
Related Proceedings Papers
Related Chapters
Dynamic Behavior of Pumping Systems
Pipeline Pumping and Compression Systems: A Practical Approach
Dynamic Behavior of Pumping Systems
Pipeline Pumping and Compression Systems: A Practical Approach, Second Edition
Dynamic Behavior of Pumping Systems
Pipeline Pumping and Compression System: A Practical Approach, Third Edition