一种新型平衡自调节系统在土工离心机上的应用

Development of a Novel Self-adjusting Balance System Applied to Geotechnical Centrifuge

为了实现土工离心机运转以后的实时配平,减小离心机运转过程中的不平衡力,研制了一套平衡自调节系统。该系统构建了一套由电磁阀、传感器、PLC控制器组成的反馈控制系统,通过它向安装在配重端的水箱中受控注水,来实时调节工作端载荷变化引起的不平衡。将该系统应用到某土工离心机上,开展了离心机升速和负载增大工况下的自平衡调节试验,实现了离心机的实时配平。相对传统的液压缸或电机驱动配重块的平衡调节机构,该注水配平系统结构更简单、平衡调节范围更宽。

A self-adjusting balance system is developed to achieve real-time trim and reduce unbalanced force when geotechnical centrifuge is running.In this system,a feedback control system which consists of electromagnetic valves,sensors,and a PLC is constructed to controllably inject water into a tank fixed in the counterweight part,and hence adjusting the unbalance induced by changes of load in the work part.This system was applied to a geotechnical centrifuge to conduct self-adjusting balance tests,and finally achieved real-time trim when centrifuge＇s speed or load in the work part increases.Compared with traditional adjusting balance mechanism which drives a counterweight block by a hydraulic cylinder or a motor,this system has a simpler structure and a wider range of adjusting balance.