RT Journal Article SR Electronic A1 Eldin Ibrahim, Ezz A1 Elnady, Tarek A1 Hassan, Mohamed Saffaa A1 Saleh, Ibrahim T1 Electro-Hydraulic Proportional System Real Time Tracking Control Development Based on Pulse width Modulation Method JF Communications - Scientific Letters of the University of Zilina YR 2021 VO 23 IS 4 SP B336 OP B345 DO 10.26552/com.C.2021.4.B336-B345 UL https://komunikacie.uniza.sk/artkey/csl-202104-0016.php AB The presented work was directed to develop the dynamic performance of an electro-hydraulic proportional system (EHPS). A mathematical model of the EHPS is presented using electro- hydraulic proportional valve (EHPV) by Matlab-Simulink, which facilitates the simulation of the hydraulic behavior inside the main control unit. Experimental work is done and the closed loop system is designed using the linear variable displacement transducer sensor (LVDT). The controller of the system is an Arduino uno, which is considered as a processor of the system. The model is validated by the experimental system. The study also presents a real time tracking control method, based on pulse width modulation, by controlling the speed of the actuator to achieve the position tracking with minimum error and low transient time, by applying the constant input signal 50mm the transient time was 0.9 seconds and the error 1.8%.