变参数动三轴激振系统性能分析

作者：赵 慧1，张尚盈2，张付祥3 日期：2008-04-17/span> 浏览：3890 查看PDF文档

变参数动三轴激振系统性能分析
赵 慧1，张尚盈2，张付祥3
（1.武汉科技大学 机械自动化学院，湖北 武汉 430081;
2.华中科技大学 数字制造装备与技术国家重点实验室，湖北 武汉 430074;
3.河北科技大学 机械电子工程学院，河北 石家庄 050054）

摘 要：动三轴是土木工程中用于测试土动力特性的试验设备。首先介绍了系统的结构和工作原理，然后分别建立了动三轴系统力和位置控制时的传递函数模型，并针对试验过程中土试件的刚度和粘性阻尼系数变化很大的特点，详细分析了参数变化对系统性能的影响，为动三轴系统的设计和控制奠定了基础。
关键词：动三轴；参数变化；电液伺服系统

Performance analysis of dynamic triaxial actuator system with timevarying parameters
ZHAO Hui1, ZHANG Shangying2, ZHANG Fuxiang3
（1.College of Mechanical Automation, Wuhan University of Science and Technology, Wuhan 430081, China;
2.State Key Laboratory of Digital Manufacturing Equipment & Technology, Huazhong University of Science and Technology, Wuhan 430074, China;
3.College of Mechanical & Electronic Engineering, Hebei University of Science and Technology, Shijiazhuang 050054, China）

Abstract: Dynamic triaxial system is the laboratory equipment to test the properties of soil sample. The structure and principle of dynamic triaxial was firstly introduced, system transfer functions of force and position control system were respectively built. According to the characteristics of stiffness and viscous damping coefficient of soil sample varying in a large range, influences of timevarying parameters on system performance were analyzed detailedly. It is the basis of design and control of dynamic triaxial.
Key words: dynamic triaxial; timevarying parameters; electrohydraulic servo system

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