DUAL HYDRAULIC CYLINDERS WITH WATER GATE CONTROL SYSTEM DESIGN
Abstract
Medium and large sluice is an important building of water control project，ensure both ends of the cylinder synchronous movement of the piston rod, And thus ensure the smooth opening and closing the sluice, that is an important condition for safe operation of sluice. This thesis aims to design a system, which controls dual hydraulic cylinders with water gate and achieves to control the sluice’s opening accurately.
The design goes from the background and function, and then analyzes its principles of internal structure deeply. From the compare with the traditional control method, we can deeply realize the technical requirements of this control system. By documentary research, functional analysis, simulation, experience summarization can we design a valuable control plan.
Technical line: Take advantage of PLC to control the inverter so that we can achieve to control the speed of the cylinder motor. Take advantage of gate opening sensor to feed the information back to PLC, so that it turns out to be a closed loop control system, and achieves to control the valves at both ends of the displacement. At the same time , we take advantage of touch screen to create a HMI, so that it can be much easily to operate. The main functions of control system includes: inverter track correction, fault alarm, set up zero-set opening, history, manual correction.
The content includes: collection and selection of information about components required in the control system, the drawing of electrical diagram and flow chart about the control system, the writing and debugging of programs in the control system.
Key words: PLC inverter gate opening sense touch screen
