Research On Electro-Hydraulic Control System Of Nuclear Special Shear Fork Lifting Equipment

Based on the actual situation,this paper studies a cutting-fork-type high-altitude operation platform which can be used in nuclear decommissioning operation.There are about 10mSv/h doses of radiation in the field environment of nuclear decommissioning of this project,which will have a considerable impact on the health of workers exposed directly to their environment.At present,most of the nuclear decommissioning operations in China still adopt manual methods,and there are high labor intensity,low work efficiency and high safety risk in the process of operation.In this paper,the actual situation of a study should be The high-altitude platform for cutting equipment used in nuclear decommissioning is used as the basic platform.Under the principle of safe,efficient and stable design,some optimization of the equipment is studied.The main contents of this paper are as follows:1? Synchronous design of hydraulic parallel bar displacement of tool lifting scissor arm: First of all,analyze the safety and stability required for the tool lifting operation.According to the characteristics of the tool scissor arm,build a mechanical model to analyze the force and obtain the model number of each component of the hydraulic system of the shear arm.Secondly,the mathematical model of the hydraulic system of the shear fork arm is analyzed,and the system transfer function is obtained.Then use ordinary PID and fuzzy adaptive PID as algorithms respectively to design the system hydraulic parallel bar displacement synchronization accuracy,combined with software AMESim and Matlab for joint simulation and analysis of simulation results;2? Control system analysis: Analyze the control method of each motion execution component(hydraulic cylinder,electric motor)of this tooling from the perspective of motion,design the manual control operation interface based on industrial remote control,assign the input and output signal ports of the controller,and finally write the tooling control process Illustration;3? Research on the anti-radiation reinforcement of the electronic control components in the radiation field: analyze the electronic components required by the tooling electronic control system,and design a shielding and solidification suitable for the tooling based on the actual radiation situation on the site and the tooling mechanical structure.The software simulates the shielding performance of the shield body in the radiation field.Finally,the ?-ray irradiation experiment of the CMOS image sensor is studied,and the characteristics of the output image before and after the radiation are obtained and the results are analyzed.