In times of digitalisation, visual assistance systems in assembly are increasingly important. The design of these assembly systems needs to be highly complex to meet the requirements. Due to the increasing number of v...In times of digitalisation, visual assistance systems in assembly are increasingly important. The design of these assembly systems needs to be highly complex to meet the requirements. Due to the increasing number of variants in production processes, as well as shorter innovation and product life cycles, assistance systems should improve quality and reduce complexity of assembly processes. However, many large kitchen manufacturers still assemble kitchen cabinets manually, due to the high variety of components, such as rails and fittings. This paper focuses on the analysis and evaluation of virtual assistance systems to improve quality and usability in individualised kitchen cabinet assembly processes at a large German manufacturer. A solution is identified and detailed.展开更多
Digital simulation of the full operation of a remotely operated vehicle(ROV)is an economically feasible way for algorithm pretesting and operator training prior to the actual underwater tasks,due to the huge diffculti...Digital simulation of the full operation of a remotely operated vehicle(ROV)is an economically feasible way for algorithm pretesting and operator training prior to the actual underwater tasks,due to the huge diffculties encountered during the underwater test,high equipment cost,and the time-consuming nature of the process.In this paper,a human-interactive digital simulation platform is established for the navigation,motion,and teleoperated manipulation of work-class ROVs,and provides the human operator with the visualized full operation process.Specially,two mechanisms are presented in this platform:one provides the virtual simulation platform for operator training;the other provides real-time visual and force feedback when implementing the actual tasks.Moreover,an open data interface is designed for researchers for pretesting various algorithms before implementing the actual underwater tasks.Additionally,typical underwater scenarios of the ROV,including underwater sediment sampling and pipeline docking tasks,are selected as the case studies for hydrodynamics-based simulation.Human operator can operate the manipulator installed on the ROV via the master manipulator with the visual and force feedback after the ROV is navigated to the desired position.During the full operation,the dynamic windows approach(DWA)-based local navigation algorithm,sliding mode control(SMC)controller,and the teleoperation control framework are implemented to show the effectiveness of the designed platform.Finally,a user study on the ROV operation mode is carried out,and several metrics are designed to evaluate the superiority and accuracy of the digital simulation platform for immersive underwater teleoperation.展开更多
文摘In times of digitalisation, visual assistance systems in assembly are increasingly important. The design of these assembly systems needs to be highly complex to meet the requirements. Due to the increasing number of variants in production processes, as well as shorter innovation and product life cycles, assistance systems should improve quality and reduce complexity of assembly processes. However, many large kitchen manufacturers still assemble kitchen cabinets manually, due to the high variety of components, such as rails and fittings. This paper focuses on the analysis and evaluation of virtual assistance systems to improve quality and usability in individualised kitchen cabinet assembly processes at a large German manufacturer. A solution is identified and detailed.
基金Project supported by the National Natural Science Foundation of China(Nos.52075476 and 52301404)the Zhejiang Provincial Natural Science Foundation of China(No.LR23E050001)。
文摘Digital simulation of the full operation of a remotely operated vehicle(ROV)is an economically feasible way for algorithm pretesting and operator training prior to the actual underwater tasks,due to the huge diffculties encountered during the underwater test,high equipment cost,and the time-consuming nature of the process.In this paper,a human-interactive digital simulation platform is established for the navigation,motion,and teleoperated manipulation of work-class ROVs,and provides the human operator with the visualized full operation process.Specially,two mechanisms are presented in this platform:one provides the virtual simulation platform for operator training;the other provides real-time visual and force feedback when implementing the actual tasks.Moreover,an open data interface is designed for researchers for pretesting various algorithms before implementing the actual underwater tasks.Additionally,typical underwater scenarios of the ROV,including underwater sediment sampling and pipeline docking tasks,are selected as the case studies for hydrodynamics-based simulation.Human operator can operate the manipulator installed on the ROV via the master manipulator with the visual and force feedback after the ROV is navigated to the desired position.During the full operation,the dynamic windows approach(DWA)-based local navigation algorithm,sliding mode control(SMC)controller,and the teleoperation control framework are implemented to show the effectiveness of the designed platform.Finally,a user study on the ROV operation mode is carried out,and several metrics are designed to evaluate the superiority and accuracy of the digital simulation platform for immersive underwater teleoperation.
