Study On Electro-hydraulic Leveling Control System Of Special Vehicle Platform

Immediately,the economic development of countries globalization brings new opportunities,but also a huge risk.The military competition of each country is increasing,and the threat of war is everywhere.Weapon system which be the key field of national defense,has been highly valued in the military field.Ground weapon in modern warfare must have a high mobility and rapid response performance in order to get strong survival ability and high effective.At present, most of the military launcher take the cars as carrying objects in order to meet the rapid maneuver conditions.It improves the rapid mobility and docking accuracy of the ground weapon from two aspects,which is the leveling time and leveling accuracy of the platform.The automatic leveling system is one of the important measures to solve this series of problems.And it has important theoretical value and practical significance.The vehicle platform be taken as the research object in this article,and the automation leveling control system has been researched and designed.Control mode and leveling strategy were optimized,and Control system modular scheme was proposed,by improve the control accuracy, fast response ability, stability, anti-interference and reliability of the vehicle platform control system,which can be better adapted to the application requirements of modern weapons.According to the system design task and control requirements of the system,in this paper, analyzing and comparing the drive mode,support way,leveling strategy and control method of the system,determine the final suitable overall scheme of the system.The hydraulic part and the electrical control part of the leveling system were comprehensively analyzed and designed,especially the design of the hydraulic control circuit and the construction of the hardware circuit in manual leveling part.Meantime,the strategies of leveling control system has been studied,and also the cause of the “empty leg”problem,the plan of detection and solving the problem.According to the theoretical analysis,the leveling system which composed of PLC and PC was set up.The configuration of flexible WinCC is the interface development environment for PC,which can improve the operability of the system.Finally, the fuzzy PID control leveling scheme was put forwarded, and analyze the effect of the leveling precision.Based on theoretical research,the development and design of the hardware and software of the automatic leveling control system was accomplished.The field test results show that the leveling system can meet the overall mission requirements and achieve expected results, and that the accuracy of leveling can reach 0.1 degrees, and that leveling time was less than two minutes.