This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
System Modeling and Controls Design of a Two - Stage Spool Valve System of an Off - Road Vehicle
Technical Paper
2013-26-0111
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A two-stage spool valve system is common in the hydraulic system of an off-road vehicle and used as hydraulics control element for controlling the hydraulic cylinder. Off-road vehicle industries mostly use a fixed-gain PID based controller for the flow control of the two-stage spool valve system. A hydraulic spool valve system exhibits highly nonlinear behavior, which makes it challenging to design a PID based controller to control its dynamics. This paper presents a method for the dynamic system model development of the two-stage spool valve system. This model will be useful to study the impact on the valve dynamics due to lubricating oil properties variation to avoid the potential system hazards and machine failure scenarios. An alternative control system design approach is also proposed based on the gain-scheduled control technique, wherein the non-linear dynamics of the valve system is linearized at different equilibrium points and PID gains are scheduled at these points. An example of the hydraulic circuit with two-stage spool valve in an off-road vehicle is taken to demonstrate the closed-loop system performance in simulation environment using MATLAB/Simulink tool.
Authors
Citation
Goyal, P., Chaudhary, G., and N, N., "System Modeling and Controls Design of a Two - Stage Spool Valve System of an Off - Road Vehicle," SAE Technical Paper 2013-26-0111, 2013, https://doi.org/10.4271/2013-26-0111.Also In
References
- Sturman Oded Eddie Spool Valve US Patent, US7958909B2 June 2011
- Yuan Qinghui and Lew Jae Y Modeling and Control of Two-stage Twin Spool Servo-Valve for Energy Saving American Control Conference Portland, OR, USA 2005
- Luo Yamin System Modeling and Control Design of A Two-stage Metering Poppet-Valve System PhD Thesis University of Missouri Columbia May 2006
- Yoshioka Mamoru Hydraulic System Control Device and Valve Timing Control Device US Patent Publication Number, US2010/0236227A1 Jan 2010
- Sakamoto Katsuhiko Valve Timing Control System for Engine US Patent Publication Number, US05222465 March 1992
- Liu Rui Nonlinear Control of Electro-hydraulic Servosystems: Theory and Experiments Masters of Science Thesis University of Illinois Urbana-Champaign 1998
- Merritt Herbert E Hydraulic Control Systems John Wiley & Sons Inc 1967
- Hydraulic Fluids and Lubricants Technical Information Sauer Danfoss Technical Catalogs September 2010
- Ogata Katsuhiko Modern Control Engineering 4 th Prentice Hall 2009
- Khalil Hassan K Nonlinear Systems 2nd Prentice Hall 1996
- Dobchuk Jeffery W PHD Thesis University of Saskatchewan Saskatoon, Canada August 2004