Characteristics analysis and control study of a pneumatic proportional valve

To improve the vehicle pneumatic brake system, the feasibility of using pneumatic proportional valve as pressure regulator is studied in this article. Take proportional relay valve of WABCO as the research object. First, the mathematic model for proportional relay valve is established in Matlab/Simulink and verified through open loop experiment. Then, the effects of main physical and geometrical parameters on characteristics of the valve are analyzed. Finally a PI controller with feedforward and anti-windup compensation is designed. Study shows that the valve has a good performance of high linearity and would not be affected by supply pressure. The designed controller improves the pressure regulation precision and robustness.

[1]  Christian Busch,et al.  Exact Linearization Control for a pneumatic proportional pressure control valve , 2010, IEEE ICCA 2010.

[2]  Bryan R. Murphy.  Anti-Lock Braking Systems for North American Buses, Coaches and Motorhomes , 1997 .

[3]  K. Kawashima,et al.  Development of pneumatic high precise position controllable servo valve , 2004, Proceedings of the 2004 IEEE International Conference on Control Applications, 2004..

[4]  Septimiu E. Salcudean,et al.  A force-controlled pneumatic actuator , 1995, IEEE Trans. Robotics Autom..

[5]  Yildirim Hurmuzlu,et al.  A High Performance Pneumatic Force Actuator System: Part I—Nonlinear Mathematical Model , 2000 .

[6]  M. Sorli,et al.  Dynamic model and experimental investigation of a pneumatic proportional pressure valve , 2004, IEEE/ASME Transactions on Mechatronics.

[7]  M. F. Rahmat,et al.  Identification and self-tuning control of electro-pneumatic actuator system with control valve , 2013, 2013 IEEE 3rd International Conference on System Engineering and Technology.

[8]  Yang Gang,et al.  Modeling and Control of a Novel High-Pressure Pneumatic Servo Valve Direct-Driven by Voice Coil Motor , 2013 .

[9]  Yu-Hu Cheng,et al.  Modeling and self-tuning pressure regulator design for pneumatic-pressure–load systems , 2007 .

[10]  S. H. Cho,et al.  Virtual-Design-Model-Based Pressure-Tracking Control of High-Dynamic Pneumatic Valves Using a Sliding Mode Controller Combined with a Proportional-Integral-Derivative Scheme , 2006 .