Abstract
The steady-state performances and step input response of a proportional solenoid control pressure relief valve are investigated experimentally. The valve consists of the main stage poppet which is controlled by a pilot stage driven by proportional solenoid. The position transducer with linear variable transformer of the pilot stage is the added feature which helps in feedback control of the solenoid motor. Some characteristics have been established through mathematical modelling. Finally, results have been compared with the earlier results obtained by a system identification CAD approach. The resultant model faithfully reproduces the valve characteristics in a form which may directly be used in performance prediction of such a valve and hence the dynamic simulation of the valve controller.
