Modeling and simulation for the electro-hydraulic servo system based on Simulink

Abstract

This paper established mathematical model based on control theory for electro-hydraulic position servo system, used Simulink to simulate system model, and applied M files and module mask function to simplify the system simulation process. This electro-hydraulic position servo system adopted PID controller. The PID control is the abbreviation of proportion, integral and differential control, its value depends on its widely applicable for most of the control system, especially when the mathematical model of the controlled object is known, PID control could be particularly useful. This paper applied digital PID to get ideal system dynamic performance by adjusting the PID parameters. This paper proposed a method that provides a reference for other control systems analysis and design.

Investigation of the Operation of an Electrohydraulic Control System of a Flying Vehicle Under Failure Conditions

“…By-pass flow rate of the EHSV, m 3 /s P ୱ Supply pressure to the EHSV, pa P 1 Pressure in the left side of the flapper valve, Pa P 2 Pressure in the right side of the flapper valve, Pa P 3 Pressure in the flapper valve return chamber, Pa…”

“…Detecting, transmitting and processing the signal by use of electric and electronic components, driving the load with hydraulic transmission in the electro-hydraulic servo control system. So it can make full use of electrical system for its convenience and aptitude, make full use of hydraulic system for its rapid response speed, big load stiffness and accurate positioning characteristics to make the whole system more adaptable [3].…”

The Simulation and Experimental Results of Dynamic Behaviour of Torque Motor Having Permanent Magnets

“…By low power control signals (of the order 10 mV) one can control powers as large as several hundreds od kilowats. A mulitude of papers has been devoted to the control of hydraulic systems, their modeling, and improvement of their performance [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Dynamic behaviour of a system as a whole is largely, in addition to the hydraulic components, determined by dynamic processes in the torque motor, [5], [11][12][13][14].…”

Modeling and simulation for application of electromagnetic linear actuator direct drive electro-hydraulic servo system

“…Establishment of mathematical model of electro-hydraulic servo system is the foundation of research, design and control, and the nonlinear factors of electro-hydraulic servo system caused the modeling accuracy of electro-hydraulic servo system, has always been a concerned problem [3,4]. Now the electro-hydraulic servo system modeling method [5][6][7] mainly concentrates in the transfer function method of the classical control theory, but has been difficult to meet requirements for the occasion of high real-time requirement with a nonlinear influence system. The modeling based on the graphical modeling software-AMEsim has a friendly interface simulation on the simple hydraulic system, but it is hard to achieve control algorithm, and generally has united simulation with Matlab [8,9].…”