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[Aging-Associated Oral Microbiota Dysbiosis and Hypofunction: Their Role in Alzheimer's Disease Pathogenesis]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Li Y, Chen Y, Chen S, Huang X.
europepmc   +1 more source

[Thoughts and Prospects on Precision Control and Intelligent Positioning Robotic Systems Applied in Nasojejunal Feeding Tube Placement]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Qiu Y, Hong R, Xiang G, Hong D, Zhang Y, Li K, Qian H, Dian S, Li K, Pu W.   +9 more
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基于位置压力双闭环控制的码垛机皮带液压张紧系统

工程建设
为解决传统皮带张紧系统调节滞后、动态适应性差的问题，本论文设计了码垛机皮带液压张紧系统，并提出位置-压力双闭环控制策略。针对传统机械张紧系统人工维护频繁、恒张力张紧系统体积大且难适配动态工况的缺陷，结合皮带弹性塑性变形、启停冲击及长距离张力不均的工况痛点，构建了含压力传感器、位移传感器及电比例阀的液压控制结构，通过位移内环与压力外环实现协同控制。运行数据表明，该系统启动10秒内张紧力即可稳定，动态工况下张紧力波动范围为190t-210t，压力变化幅度≤10%，满足设计要求，同时有效提升系统寿命 ...
文泽 于, 嘉卿 葛, 寅 张
semanticscholar   +1 more source

四柱式液压机双缸“串并联”同步控制结构研究

, 2021
田英, 佘阳, 王兴波
openalex   +1 more source