Test Platform Hydraulic System Of High Pressure Cylinder Controlled By PLC And Its Simulation & Automatic Control Studies On Oil Temperature

Hydraulic cylinder is one of the primary executing elements in hydraulic system, and systemic woking performance is affected by its characteristic to a large extent; However, there are few test platforms that are used to test hydraulic cylinder'performance precisly in Guangxio The paper is combined with the topic, and makes studies on design control as well as optimization so as to lay a good foundation for the futureSystemic driving source adopts limited-pressure variable displacement pump in the test platform; Variational displacement pump, with flow control valve carries out volume control; To weaken pressure mutation in the course of cylinder'direction changing, it firstly applies an asymmetric electromagnetism valve to hydraulic circuit of no reclaimed power, and the valve is used to control an asymmetric hydraulic cylinderAfter detailedly analysizing elements of the system and reasonably selecting its model based on working need and elements' function, the static and dynamic mathematical models are established by means of power bond graphs, and digital simulation is done using the MATLAB software, and the effects on systematic parameters to its performance are discussed, the stability celerity and sensibility of systemic dynamic response are also analysized; Optimization of some systematic parameters is done to gain the optimal results of dynamic performance indexA new technology, cold and hot oil mixing in pipe, is presented, which regulates and controls oil temperature effectively, and its control is executed by PLCTo enhance the test precision and automatization of the test platform, a scheme that PLC controls the whole hydraulic system has been advanced scientificly to provide reference and use...