Lyapunov Based Observer Design for Electro-Hydraulic Arm System

In this paper, a Lyapunov based observer design is proposed to observe the load pressure of electro-hydraulic arm systems. The stability investigated by using method. analysis, it proven that error converge vicinity origin which can be adjusted arbitrarily small. classical PID controller used control position system and keep states bounded. performance designed evaluated computational simulations are conducted in MATLAB Simulink program. tested two cases: i) noise free case ii) case. noisy case, state x_2 exposed 30 dB additive white Gaussian noise. simulation results given demonstrate work efficiently both cases.