摘要
针对一些特殊工程机械推土作业过程中只能使用单挡(最低挡)工作的问题,对液力传动工程机械单挡推土作业过程进行了动态仿真与分析.在对液力传动系统和工程机械推土作业过程分析的基础上,建立了动力传动系统各子系统数学模型,并在Matlab/Simulink下建立了液力传动工程机械推土作业过程动态系统仿真模型.然后,在不同油门开度下对液力传动工程机械单挡推土作业过程进行了仿真.其仿真结果表明采用液力传动能够提高工程机械的动力适应性能和工作平顺性;同时,通过有效地控制发动机油门开度或推土阻力可以使液力变矩器维持在高效工作区内工作.
To resolve the impacts of bottom (or single) gearing in the bulldozing process, a dynamic simulation is proposed for hydraulic transmission vehicles. In this regard, mathematical models of hydraulic transmission sub-systems are initially established and thereafter simulated using Matlab Simulink TM. Afterwards, an operation process simulation for bulldozers is conducted under different throttling levels. Therein, it is revealed that the hydraulic transmission could promote the stability and adaptation of engineering vehicles. In addition, the effective control of throttling level and bulldozing resistance of a vehicle engine will keep hydraulic torque-converters in a high-efficiency working condition.
出处
《中国工程机械学报》
2006年第4期410-414,共5页
Chinese Journal of Construction Machinery
关键词
液力传动
工程机械
动态仿真
数学建模
hydraulic transmission
engineering vehicle
dynamic simulation
mathematical modeling
