The Research And Application Based On Controlled Hydraulic Unit In The Electromechanical Hydraulic Integration Commonness Technology

With the rapid development of technology , more and more requirements for machinery system are proposed, such as precision, stability, reliability, comfort and safety, simple maneuverability etc. In order to improve machinery system controlled performance and reliability and arrive at the aim of efficient control, machine system, which usually is made up of machine, electronic, hydraulic system, take up scheduled work and motion, electro-hydraulic proportional valve is recommended in this paper, by way of building up controlled hydraulic-unit, the goal of digital control is reached.Proportional control is one of the most vivid life-force branches in the field of hydraulic drive and control technique, the proportional pressure-flux valve(P-Q valve),which adjusts pressure and flow rate simultaneously, is increasingly adopted for the hydraulic control system, due to its advantages of high composite degree, stable and energy-saving performance. It is aimed that setting up Mechano-Electronic-Hydraulic commonness technologic platform in the paper, which is based on the thinking of controlled hydraulic unit synthesized machinery in the machine system ,and inner relative between hardware system (hydraulic system, mechanical system ,control system) and software system is looked for. Electro-hydraulic proportional compound valve control is lacing in virtue of combination of modern control theory and hydraulic system.This paper synthesizes what it offers above. With an eye to the framework and function characteristics, hydraulic platform is set up, the mathematic model of the key parts of Controlled Hydraulic-Unit is established .which dynamic and static state characteristic are analyzed and hardware requirements of computer control and control strategy are described at large. At last simulation is carried through the hydraulic platform, and what is used is software package of "Simulink" of MATLAB. The paper is attempt that is for synthesis of machine and hydraulic system and foundation is established.