A Comparison of the Performance Characteristics of Conventional and Proportional Valves Applied for Synchronizing Hydraulic Cylinders

This study examines the synchronization of hydraulic systems using conventional and proportional valves, evaluating performance details, as well as time responses, energy consumption, and operating efficiency. Synchronizing hydraulic systems through cylinder motion control plays a key role in the accuracy of regular speed operations in applications. The rapid flow changes after using conventional four-way (4/3) directional control valves result in energy loss due to abrupt movements resulting from their precise open/closed positions. The solution provided by the proportional valves emerges from their ability to continuously adjust the fluid flow and pressure, enabling the fluid movement to be synchronized with pressure-sensitive system processes. Programmable Logic Controller (PLC)-controlled amplification cards allow these valves to provide fast operation while reducing energy consumption by directing orifice positions based on input data. Advanced control systems, when coupled with conventional valves, can simulate the performance of proportional valves in control applications. The controller uses specific algorithms to gradually adjust the valve positions, mimicking the output of the proportional valves. Under proper operating conditions, standard valves operate with similar efficiency to that of proportional valves. The latter achieve excellent results in high-precision dynamic control systems, because of their precise operation, speed, and significant energy savings. The hydraulic synchronization systems choose proportional valves over conventional control systems because they offer exceptional performance and maximum efficiency.