摘要
研究液压机械传动系统的动态性能.根据功率键合图规则,建立二段式液压机械双流无级传动装置双流传动工况的键合图模型,并以惯性元的广义动量和容性元的广义位移作为状态变量,推导出系统的状态方程.根据键合图模型,分析了该无级传动系统的动态响应特性,分别得到负载、输入转速和斜盘摆角变化时,系统输出转速和系统主油压的响应曲线,同时分析了液容变化对系统响应速度的影响.分析结果表明,该系统动态响应达到稳定的时间为0.5s,当液容增大时,达到稳定的时间将延长.
In order to study the dynamic characteristics of a hydro-mechanical transmission (HMT) system, a bond graph model of the dual-power state of flow of the two ranges HMT system is established, based on the bond graph theory. Taking the elements of generalized momentums of inertia and the generalized displacements of volumetric elements as the state variables, the state equations of the system are deduced. Based on such a model, dynamic response of the HMT system is simulated. The response characteristics of output speed and systemic pressure of the HMT are given when the load, input speed and angle of slope plate of the pump change by their respective rules, and the influence of fluid volume is analyzed. The result of analysis illustrates that the HMT system needs less than 05 s to attain the steady state in its dynamic response and will take longer when the fluid volume is increased.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2004年第2期104-108,共5页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(22001020201)
关键词
液压机械无级传动
键合图
动态仿真
hydro-mechanical transmission
bond graph
dynamic simulation
