Experimental and Analysis Study in Order to Improve the Performance and the Generated Torque of Hydraulic Motors

Abstract

Hydraulic systems which are employed in several industrial systems are distinct by their ability to transfer huge amount of forces at high speeds. The suitable system design is chosen according to cost, optimum performance and energy consumption. The Electro Hydraulic Servo Valve is the heart of any servo control system, which provides good dynamic system performance. This investigations focus on studying the static performance, torque and speed of a rotational movement hydraulic control system. The control system is investigated under different operating conditions. Accurate instruments have been utilized for measuring and recording the experimental results, in order to achieve best evaluations. Experiments tests have been carried under free-load, then, the system has been loaded by 2003, 3093 and 4128 N and the experiments were repeated.  Supply  pressure  has  been  changed  from  ten bar  up  to fifty  bar.  Investigations reveal that the torque and speed performance of the system is affected by the variation of operating conditions. The analysis of the performance due to the connection of either Electro Hydraulic Servo Solenoid Valve or Proportional Directional Flow Control Valve also has been studied. Evaluations of both results are analyzed, which illustrate that with connecting the Servo Control Valve, system performance is generally improved. Especially, the generated torque is improved by 34 %.