Volume 4, Issue 7

Identification and Design of Closed loop Hydraulic system with 4/3 Servo valve

Author

Rajesh Kumar Mahapatra1 *, Jagadish Chandra Pati1 , GirijaSankar Rath2 and Priyabrata Biswal3

Abstract

Abstract:

Fluid power actuators play a vital role in the field of mechatronics. The controlling of electrohydraulic actuation system is important in the view of nonlinearity characteristics of hydraulic valves. In order to control the operation of valves, the controller should be designed as well as identification of the system is necessary to know the behavior of the system. This paper provides the derivation of transfer function for a electrohydraulic servo system by using transient response of the cylinder with respect to different set point with different loads .The performance of the system is analyzed using open loop without load, open loop with load, closed loop with load and it is observed that the performance of the system works better using closed loop. Also, in this paper the identification of the electrohydraulic servo system is done using transient response parameters and using Bode plot. It has been found that the poles & zeros of the system determined by the transient response & Bode’s Plot are nearly equal. For the transfer function derived from different conditions such as open loop, closed loop, with variable loads, the PID controller is also designed and the performance characteristics hold good with theoretical aspects.

DOI

https://doi.org/10.62226/ijarst20150764

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