Design of Various Control Strategies for Electro-Hydraulic System

Abstract

In this paper, various control strategies are analyzed for electro-hydraulic system. The mathematical modeling is introduced for electro-hydraulic loading system for control methodology by using the loop-shaping and internal model controller. By determining notable tuning variables for the betterment of control methodology of the system, these two techniques are designed. The control strategies are examined in time domain and frequency domain for electro-hydraulic loading system. This hydraulic system is a typical nonlinear system. Due to the nonlinear components of this system, it is challenging to obtain accurate responses. The electro-hydraulic system is typically a non-minimum phase system. The hydraulic system calibrates the loads through an electro-hydraulic relief valve, and real-time loads are assembled through pressure sensors. In this paper, for simulating the variable loads under non-identical rolling environment, unlike rolling processes, the authenticity of observations and the control strategy must be accurate. The responses obtained by using these techniques identifies the performance in control aspects.KeywordsInternal model controlElectro-hydraulic systemLoop-shaping controllerFractional order PID controllerController design