Research And Application Of Bridge Crane Control System

Bridge crane is a kind of common goods transport,has been widely used in factories,docks,warehouses.Bridge crane is the modern industrial production important slide in the tool,efficiency is very high.Traditional bridge crane USES is the manner in which the rotor series resistance of the line of control of the bridge crane.Under such control systems there is efficiency,poor reliability,maintenance difficulties shortcomings and so on.In recent years,the focus of domestic and foreign machinery industry experts and scholars to study the speed control system,the rotor circuit adopts a new control system to replace the traditional series resistance at the same time,rapid development of power electronic technology,frequency conversion technology has been a qualitative leap and progress.The use of frequency control technology in many industries are frequent,such as some large,precision machinery and equipment,can solve a series of defects in the system,greatly improves the performance of the whole machine.Taking the bridge crane as the research object,through in-depth study of the crane control system,lists the defects in the actual production of the traditional bridge crane and can improve the selection of motor,inverter and other auxiliary components through calculation,using comparison,classification,analysis,synthesis,induction and other methods to make the concrete scheme of bridge crane control the system chooses PLC and frequency converter,and analyzed the simulation experiment and economy.Overcome many defects in the traditional control system.At the same time combined with frequency conversion technology and the use of PG card in the system,this design can effectively increase the system accuracy,improve the reliability of the bridge crane work,so that the operation is simple,can also reduce energy consumption.