连续顶升液压控制系统仿真分析与验证

Simulation and Verification of Hydraulic Control Systems for Continuous Lifting

针对大型结构物连续同步顶升技术原理,使用四桩腿支点、每个桩腿支点4个顶升油缸的支撑结构;单支点内采用基于同步分流液压泵的容积同步控制方式;支点间采用基于位移模糊的多点主从同步控制方式。建立了基于同步分流液压泵的液压系统和基于位移模糊控制的控制系统的仿真模型并进行联合仿真。对大型结构物连续同步顶升系统样机进行同步顶升试验,并对实验数据进行分析。结果表明:受实际工况中各种因素所导致的误差影响,实际同步误差比仿真同步误差略大,但仍满足同步要求,验证了所设计的液压控制系统的应用可行性。

By the large scale structure continuous synchronous lifting technology,the supporting structure with four jack-up points and each point with four jack-up hydraulic cylinders was used for the system.The volume synchronization control mode was applied in the single jack-up point based on synchronous split-flow hydraulic pump.The multi-point master-slave control mode was used between the jack-up points based on displacement fuzzy control.The system based on synchronous split-flow hydraulic pump and displacement fuzzy control was modeled and simulated.The system prototype tests and the data analysis were completed.The results show that due to the various factors in the actual conditions,the actual errors are bigger than the simulated one but still meet the requirements of synchronization.The results validate the application feasibility of the hydraulic control systems.