论文部分内容阅读
第四讲液压系统的动态仿真液压系统经常伴随着振动、冲击和噪声,有时还出现爬行和动态响应缓慢等问题,这些都是动态仿真所研究的内容。利用CAD 技术,在确定了液压系统和元件的设计方案以后,就可以预测它们的静动态工作特性。这对于提高产品质量和缩短研制周期有时是至关重要的。本讲概要介绍有关液压系统动态仿真的基础理论,以及由我国自行研制开发的HYCAD 仿真程序包的功能和用法。液压系统动态仿真的基础理论进行液压系统动态仿真,大致经历以下几个阶段:(1)抽象物理模型:就是把实际的液压系统抽象化,略去次要因素(例如忽略微小容腔,不计少量摩擦、假设参量不随时间变化和以集中参量代替分布参量等),
Lecture 4 Dynamic Simulation of Hydraulic System Hydraulic systems are often accompanied by vibration, shock and noise, and sometimes crawling and slow dynamic response problems, which are all dynamic simulation study. With CAD technology, the design of hydraulic systems and components can be determined to predict their static-dynamic behavior. This is sometimes crucial to improving product quality and shortening the development cycle. This lecture outlines the basic theory of dynamic simulation of hydraulic system, as well as the function and usage of HYCAD simulation package developed by our country. Hydraulic system dynamic simulation of the basic theory of hydraulic system dynamic simulation, generally go through the following stages: (1) Abstract physical model: the actual hydraulic system is abstracted, omitted secondary factors (such as neglect of small cavity, regardless of small amount Friction, assuming that the parameters do not change over time and that the concentration parameters replace the distribution parameters, etc.)