床椅中悬架结构的模糊滑模控制  

Fuzzy Sliding Mode Control of Suspension Structures in Bed-Chairs

作　　者：何璇 张洪 王通德 HE Xuan;ZHANG Hong;WANG Tongde(School of Mechanical Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China;Jiangsu Nari Hengch Electrical Equipment Co.,Ltd.,State Grid Electric Power Research Institute,Wuxi 214161,Jiangsu,China)

机构地区：[1]江南大学机械工程学院,江苏无锡214122 [2]国网电力科学研究院江苏南瑞恒驰电气装备有限公司,江苏无锡214161

出　　处：《噪声与振动控制》2021年第6期179-183,254,共6页Noise and Vibration Control

摘　　要：由于传统的床椅悬架结构无法满足患者对舒适度的要求,为解决不适感和局部损伤等问题,提出一种基于床椅中半主动悬架结构的模糊滑模控制。利用磁流变阻尼器构建半主动悬架,建立控制模型并将天棚阻尼系统作为参考模型,通过滑模控制使悬架结构控制模型的输出跟踪参考模型的输出,同时利用模糊算法调节控制输出。仿真数据表明,相比被动悬架,滑模控制能够有效改善床椅的垂向、俯仰和侧倾等各方向的振动问题,极大提高舒适度并抑制共振。The traditional suspension structure of bed-chairs cannot meet the comfort requirements of patients.In order to solve the problems of discomfort and local damage,a fuzzy sliding mode control based on the semi-active suspension structure of the bed-chairs is proposed.The semi-active suspension is constructed by using magneto-rheological dampers.A control model is established and the ceiling damping system is used as a reference model.The output of the suspension structure control model is tracked by the reference model through sliding mode control,and the control output is adjusted by the fuzzy algorithm.Simulation data shows that,compared with passive suspension,sliding mode control can effectively reduce the vertical,pitch and roll vibrations of the bed-chairs,and greatly improve the comfort and suppress the resonance.

关 键 词：振动与波 半主动悬架 滑模控制 天棚阻尼 模糊算法 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]