针对公司对数控磨床车间的掌控力度不足问题,提出了基于西门子通信技术的数控磨床车间数据采集与监控系统,通过SIMATIC NET工业以太网,实现SIMATIC NET OPC服务器与西门子数控系统中的S7系列PLC进行数据交换,进而利用SIMATIC NET所提供...针对公司对数控磨床车间的掌控力度不足问题,提出了基于西门子通信技术的数控磨床车间数据采集与监控系统,通过SIMATIC NET工业以太网,实现SIMATIC NET OPC服务器与西门子数控系统中的S7系列PLC进行数据交换,进而利用SIMATIC NET所提供的通信模块把数据提供给SIMATIC NET OPC客户端;在数控磨床车间SCADA系统中,采用WinCC作为SIMATIC NET OPC的客户端,同时开发了基于VB高级语言的SIMATIC NET OPC客户端,以增加SCADA系统的功能;基于SIMATIC NET的SCADA系统实现了对数控车间的数据采集与设备监控,为公司下阶段的信息化建设奠定了基础。展开更多
The pivot turning function of quadruped bionic robots can improve their mobility in unstructured environment.A kind of bionic flexible body mechanism for quadruped robot was proposed in this paper,which is composed of...The pivot turning function of quadruped bionic robots can improve their mobility in unstructured environment.A kind of bionic flexible body mechanism for quadruped robot was proposed in this paper,which is composed of one bionic spine and four pneumatic artificial muscles(PAMs).The coordinated movement of the bionic flexible body and the leg mechanism can achieve pivot turning gait.First,the pivot turning gait planning of quadruped robot was analyzed,and the coordinated movement sequence chart of pivot turning was presented.Then the kinematics modeling of leg side swing and body bending for pivot turning was derived,which should meet the condition of the coordinated movement between bionic flexible body and leg mechanism.The PAM experiment was conducted to analyze its contraction characteristic.The study on pivot turning of the quadruped robot will lay a theoretical foundation for the further research on dynamic walking stability of the quadruped robot in unstructured environment.展开更多
The research on microfluidic droplet size prediction has been extensive and fruitful, while the droplet deforming process has been seldom studied. In this paper, a frying-oil-assessing microfluidic device was designed...The research on microfluidic droplet size prediction has been extensive and fruitful, while the droplet deforming process has been seldom studied. In this paper, a frying-oil-assessing microfluidic device was designed to study the droplet deforming and recovering processes, which were dominated by channel geometry, flow rates,sheath flow viscosity and interfacial tension of the two phases. Theoretical expressions of the deforming process and its extreme value were obtained for the first time, supported by simulation and experiments. Theoretical,simulation and experimental results indicated that the steady-state droplet length could be a useful parameter for frying oil assessment.展开更多
文摘针对公司对数控磨床车间的掌控力度不足问题,提出了基于西门子通信技术的数控磨床车间数据采集与监控系统,通过SIMATIC NET工业以太网,实现SIMATIC NET OPC服务器与西门子数控系统中的S7系列PLC进行数据交换,进而利用SIMATIC NET所提供的通信模块把数据提供给SIMATIC NET OPC客户端;在数控磨床车间SCADA系统中,采用WinCC作为SIMATIC NET OPC的客户端,同时开发了基于VB高级语言的SIMATIC NET OPC客户端,以增加SCADA系统的功能;基于SIMATIC NET的SCADA系统实现了对数控车间的数据采集与设备监控,为公司下阶段的信息化建设奠定了基础。
基金Supported by the National Natural Science Foundation of China(No.51375289)Shanghai Municipal National Natural Science Foundation of China(No.13ZR1415500)the Innovation Fund of Shanghai Education Commission(No.13YZ020)
文摘The pivot turning function of quadruped bionic robots can improve their mobility in unstructured environment.A kind of bionic flexible body mechanism for quadruped robot was proposed in this paper,which is composed of one bionic spine and four pneumatic artificial muscles(PAMs).The coordinated movement of the bionic flexible body and the leg mechanism can achieve pivot turning gait.First,the pivot turning gait planning of quadruped robot was analyzed,and the coordinated movement sequence chart of pivot turning was presented.Then the kinematics modeling of leg side swing and body bending for pivot turning was derived,which should meet the condition of the coordinated movement between bionic flexible body and leg mechanism.The PAM experiment was conducted to analyze its contraction characteristic.The study on pivot turning of the quadruped robot will lay a theoretical foundation for the further research on dynamic walking stability of the quadruped robot in unstructured environment.
基金the National Natural Science Foundation of China(No.51205245)Innovation Program of Shanghai Municipal Education Commission(No.14ZZ092)+1 种基金Shanghai Municipal Natural Science Foundation(No.15ZR1415800)College Students’Joint Operation of Shanghai University(No.201618)
文摘The research on microfluidic droplet size prediction has been extensive and fruitful, while the droplet deforming process has been seldom studied. In this paper, a frying-oil-assessing microfluidic device was designed to study the droplet deforming and recovering processes, which were dominated by channel geometry, flow rates,sheath flow viscosity and interfacial tension of the two phases. Theoretical expressions of the deforming process and its extreme value were obtained for the first time, supported by simulation and experiments. Theoretical,simulation and experimental results indicated that the steady-state droplet length could be a useful parameter for frying oil assessment.
