液压传动技术在自动化生产中应用（Application of hydraulic transmission technology in automatic production）.doc

液压传动技术在自动化生产中应用（Application of hydraulic transmission technology in automatic production） Give you some material, organize yourself Hydraulic drive control system Hydraulic transmission control is a kind of control method that is often used in industry. It uses hydraulic to complete the process of transmitting energy. Because of the flexibility and convenience of hydraulic drive control, hydraulic control has received extensive attention in industry. Hydraulic transmission is the study of mechanical and automatic control using pressurized fluid as an energy medium. Hydraulic transmission uses this component to form the required control loops, and then several loops are combined into a drive system that performs some control functions to accomplish the transmission, transformation and control of energy. In principle, the hydraulic transmission based on the basic principle is the principle of Pascal, that is, the liquid pressure everywhere is the same, so, in the balance of the system, the piston above relatively small pressure is relatively small, and exert great pressure on the piston is relatively large, which can keep the rest liquid. Thus, different pressures on different ends can be obtained by the transfer of liquid so that a transformation can be achieved. The hydraulic jack that we commonly see is to use this principle to achieve the transmission of force. Fundamentals of hydraulic transmission The main components of hydraulic transmission are power components, actuators, control elements, auxiliary components, etc.. Among them, the hydraulic power component is the component for the hydraulic system to generate power, mainly including all kinds of hydraulic pumps. Hydraulic pump depends on the principle of volume change, so it is generally called volumetric hydraulic pump. The gear pump is the most common type of hydraulic pump. It moves the fluid through the rotation of two engaged gears. Other hydraulic pumps and vane pumps, piston pumps, in the selection o