Robust Suboptimal Control of an Electro-Hydraulic System with Variable Supply Pressure

Abstract:

In this study, a robust H₂ suboptimal control method is proposed for an electro-hydraulic system with variable supply pressure. The H₂ suboptimal controller is designed to minimize the sum of a quadratic performance criterion and the H₂ norm of the closed-loop transfer function from the white noise disturbance to the system state space variables. The genetic algorithm is used to select the weighting matrices of the quadratic performance criterion. In order to improve the robust performance, parameter uncertainties of the electro-hydraulic system are considered in the process of genetic search. Simulation results demonstrate the effectiveness of the proposed approach.

• Periodical: Applied Mechanics and Materials (Volumes 215-216)
• Pages: 1283-1290
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.215-216.1283
• Online since: November 2012
• Authors: Min Zhang, Jin Wang, Guo Bing Huang
• Keywords: Electro-Hydraulic, Genetic Algorithm (GA), Robust H₂ Performance, Suboptimal Control

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