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。
Abstract
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 centri-fuge’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.
关键词
土工离心机 /
注水配平 /
实时 /
平衡自调节 /
反馈控制
Key words
geotechnical centrifuge /
trim by water injection /
real-time /
self-adjusting balance /
feedback control
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参考文献
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