The static and dynamic characteristics of a pressure relief valve with a proportional solenoid-controlled pilot stage

Abstract

The steady state and dynamic characteristics of a two-stage pressure relief valve with proportional solenoid control of the pilot stage is studied theoretically as well as experimentally. The mathematical model is studied within the MATLAB-SIMULINK environment and the non-linearities have been considered via the use of appropriate SIMULINK blocks. The detailed modelling has resulted in a good comparison between simulation and measurement, albeit assumptions had to be made regarding the solenoid dynamic characteristic based upon practical experience. The use of this characteristic combined with additional dynamic terms not previously considered allows new estimations of internal characteristics to be made such as the damping flowrate. The overall dynamic behaviour has been shown to be dominated by the solenoid characteristic relating force to applied voltage.

Keywords

pressure relief valve solenoid control dynamic response

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References

Davies

R. M.

A real-time approach to load adaptive electrohydraulic motor speed control. PhD thesis, University of Wales, Cardiff, 1994.

Davies

R. M.

Watton

Intelligent control of an electrohydraulic motor drive system. Mechatronics, 1995, 5 (5), 527–540.

Watton

Xue

Simulation of fluid power circuits using artificial network models. Part 1: Selection of component models. Proc. Instn Mech. Engrs, Part I, Journal of Systems and Control Engineering, 1997, 211 (16), 417–428.

Watton

Xue

Simulation of fluid power circuits using artificial network models. Part 2: Circuit simulation. Proc. Instn Mech. Engrs, Part I, Journal of Systems and Control Engineering, 1997, 211 (16), 429–438.

Shin

Y. C.

Static and dynamic characteristics of a two stage pilot relief valve. Trans, ASME, J. Dynamic Systems, Measmt, Control, 1991, 113, 280–288.

Washio

Nakamura

Static characteristics of a piston-type pilot relief valve. Proc. Instn Mech. Engrs, Part C, Journal of Mechanical Engineering Science, 1999, 213 (C3), 231–239.

Edge

K. A.

Johnston

D. N.

The impedance characteristics of fluid power components: Relief valves and accumulators. Proc. Instn Mech. Engrs, Part I, Journal of Systems and Control Engineering, 1991, 205 (11), 11–22.

Maiti

Surawattanawan

Watton

Performance prediction of a proportional solenoid control pressure relief valve, fluid power. In Proceedings of Fourth JHPS International Symposium, 1999, pp. 321–326.

Merritt

H. E.

Hydraulic Control Systems, 1967 (John Wiley, New York).

10.

Vaughan

N. D.

Gamble

J. B.

The modelling and simulation of a proportional control solenoid valve. Trans. ASME, J. Dynamic Systems, Measmt, Control, March 1996, 118, 120–125.

11.

Saha

Maiti

Understanding direct acting proportional solenoid directional control valve-performance study through MATLAB-SIMULINK. In Proceedings of the National Conference on Machines and Mechanisms (NACOMM'99), Indian Institute of Technology, Bombay, India, 15–16 December 1999, pp. 98–107.