Abstract
In this paper, the static force/stroke characteristic of switching solenoid is linearized by using the traditional PIcontroller as well as the fuzzy-logic-controller. The major aim is to develop a proportional switching solenoid having the advantage of lower cost as compared with a usual proportional solenoid. Besides, two different methods to implement the linearization are adopted. One is the employment of a force sensor to generate the actual feedback force signal, and the other is the utilization of the numerically estimated pseudo-force as the feedback signal. Experimental results prove that the nonlinear fuzzy-logic-controller is superior to the conventional linear PI-controller concerning the compensation of the high nonlinearity near the end-position of the plunger.
