负载敏感液压变压器响应特性

摘要

为解决现有液压变压器输出压力不能根据负载自动调节的问题,在摆动油缸控制的斜盘柱塞式液压变压器的基础上设计了一种负载敏感液压变压器,利用AMESim软件对其进行负载敏感特性分析.结果表明,该液压变压器能够根据负载的变化自适应调节输出压力,负载敏感的稳定性和精度良好,5 MPa阶跃响应的上升时间小于0.15 s.其±1 MPa正弦响应频率大于l Hz.%In'order to solve the problem that output pressure can not adjust to the load automatically,this paper design a load-sensing hydraulic transformer (HT) based on a swash-plate plunger HT controlled by rotary cylinder.The load-sensing characteristics of HT are analyzed based on AMESim.Simulation results indicate that the HT have several obvious characteristics,such as the output pressure automatic regnlation,good stability and precision of load-sensing,rapid rise time of 5 MPa step response (less than 0.15 s).And the + 1 MPa sine response frequency is greater than 1Hz.