针对陆地仿生机器人无法下水、水面作业机器人无法上岸的痛点,以及常见的球形两栖机器人在陆地载重运输时,无法保证其载重稳定性,在水中灵活性不高等现状,本文提出了一种水陆两栖龟型载重机器人的设计。对“龟背”展开机构进行设计,展...针对陆地仿生机器人无法下水、水面作业机器人无法上岸的痛点,以及常见的球形两栖机器人在陆地载重运输时,无法保证其载重稳定性,在水中灵活性不高等现状,本文提出了一种水陆两栖龟型载重机器人的设计。对“龟背”展开机构进行设计,展开“龟背”后形成载物平台,在提供浮力的同时提升水面负载能力。“龟背”装置利用水面的浮力、上下臂以及外推杆实现展开后的自锁功能,保证了载重的稳定性。“龟腿”采用简单的合页原理,提高机器人在水中的灵活性。经实验计算证明,“龟背”载重可达自身重量的5倍,“龟腿”可在仅靠舵机驱动的方式下提高划行效率。并利用ESP8266 WiFi串口模块和ESP8266 Web Server库搭建网页服务器,通过浏览器访问进行设备控制。展开更多
Heavy-load transfer robots are widely used in automobile production and machinery manufacturing to improve production efficiency.In order to meet the needs of large billet transfer,a 4-DOF transfer robot is designed i...Heavy-load transfer robots are widely used in automobile production and machinery manufacturing to improve production efficiency.In order to meet the needs of large billet transfer,a 4-DOF transfer robot is designed in this paper,which consists of parallel four-bar mechanisms.The Jacobian matrix referring to the mapping matrix from the joint velocity to the operating space velocity of the transfer robot can be solved by the differential-vector method.The mean value of the Jacobian matrix condition number in the workspace is used as the global performance index of the robot velocity and the optimization goal.The constraint condition is established based on the actual working condition.Then the linkage length optimization is carried out to decrease the length of the linkage and to increase the global performance index of velocity.The total length of robot rods is reduced by 6.12%.The global performance index of velocity is improved by 45.15%.Taking the optimized rod length as the mechanism parameter,the distribution of the motion space of the transfer robot is obtained.Finally,the results show that the proposed method for establishing the Jacobian matrix of the lower-mobility robot and for the optimization of the rods based on the velocity global performance index is accurate and effective.The workspace distribution of the robot meets the design requirements.展开更多
文摘针对陆地仿生机器人无法下水、水面作业机器人无法上岸的痛点,以及常见的球形两栖机器人在陆地载重运输时,无法保证其载重稳定性,在水中灵活性不高等现状,本文提出了一种水陆两栖龟型载重机器人的设计。对“龟背”展开机构进行设计,展开“龟背”后形成载物平台,在提供浮力的同时提升水面负载能力。“龟背”装置利用水面的浮力、上下臂以及外推杆实现展开后的自锁功能,保证了载重的稳定性。“龟腿”采用简单的合页原理,提高机器人在水中的灵活性。经实验计算证明,“龟背”载重可达自身重量的5倍,“龟腿”可在仅靠舵机驱动的方式下提高划行效率。并利用ESP8266 WiFi串口模块和ESP8266 Web Server库搭建网页服务器,通过浏览器访问进行设备控制。
基金supported by the National Key R&D Program of China(No.2018YFB1307900)the Natural Science Foundation of Shanxi Province(Nos.201901D211009,201901D211010)the Technology In⁃novation Foundation of Shanxi University(No.2019L 0177).
文摘Heavy-load transfer robots are widely used in automobile production and machinery manufacturing to improve production efficiency.In order to meet the needs of large billet transfer,a 4-DOF transfer robot is designed in this paper,which consists of parallel four-bar mechanisms.The Jacobian matrix referring to the mapping matrix from the joint velocity to the operating space velocity of the transfer robot can be solved by the differential-vector method.The mean value of the Jacobian matrix condition number in the workspace is used as the global performance index of the robot velocity and the optimization goal.The constraint condition is established based on the actual working condition.Then the linkage length optimization is carried out to decrease the length of the linkage and to increase the global performance index of velocity.The total length of robot rods is reduced by 6.12%.The global performance index of velocity is improved by 45.15%.Taking the optimized rod length as the mechanism parameter,the distribution of the motion space of the transfer robot is obtained.Finally,the results show that the proposed method for establishing the Jacobian matrix of the lower-mobility robot and for the optimization of the rods based on the velocity global performance index is accurate and effective.The workspace distribution of the robot meets the design requirements.
