Control Performance of Proportional Hydraulic Pressure Valve Using Load Sensor

There are many applications of hydraulic systems used by lifting mechanisms. It is one type of pressure-control valve. Its function is to balance the lifting forces to reduce power consumption, manually adjust to a specific pressure, and provide an equivalent load. This work aims to investigate the control performance between the valve and the sensor. An automated system is proposed that controls a proportional pressure relief valve, load cell, and pressure sensor via a programmed controller. In a way that keeps the variable load actuator in its position regardless of the value or time of its load pressure. verify the function of the system, it was simulated using FluidSim software V4.2. When a certain weight is lifted, we get variables such as valve pressure, cylinder position, speed, and sensor voltage output. A laboratory crane was also used to test the system. This is to verify the performance in the laboratory. The error values ​​were (5.01, 4.39, and 2.29) at pump pressures (5, 10, and 15 bar), respectively. As a result, the system's work and performance are acceptable.