The objective of this thesis is the development of an innovative closed-loop, sensorless position control algorithm for proportional electrohydraulic valves, based on the indirect estimation of the electromagnet inductance, in order to ensure good control accuracy and repeatability.
This approach makes it possible to eliminate the use of an LVDT position transducer, resulting in a considerable cost reduction.
The thesis will be carried out in the company’s R&D laboratory, it will require the creation and validation of a Simulink model of the valve, the development of the electromagnet inductance estimation algorithm — and consequently the estimation of the moving element position — and finally the development of the closed-loop PID controller and its bench validation.