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| 1 | 四自由度串联机器人用电磁作动器设计显示文摘为了满足微型机器人应用的多样化需求并提升其可操作性,提出了一种小型化、模块化的双轴电磁作动器(EMA)。首先,研究了所提EMA的设计结构和工作原理。然后,对EMA进行了有限元分析,并研究了产生的力矩和旋转角对其性能的影响。其次,使用两个EMA来生成一个微型四自由度串联机器人。最后,在正逆运动学之后采用开环控制器,并结合图像处理技术对机器人性能进行了测试。研究结果表明:该EMA在仿真时实现了100 mN·m的力矩,且在实测时实现了80 mN·m的力矩。此外,该EMA可以实现10°(≈0.2 rad)的旋转。机器人末端执行器能够以适度的误差跟踪预定的圆形轨迹,验证了其可靠性。该EMA具有重量轻、体积小、可操作性强等优点,通过多个模块连接能够满足多种应用需求。 | 魏国莲 李积元 | 2022 | 传感器与微系统2022，41，4： | 0 |
| 2 | Moving Mechanism of a High-speed Insect-scale Microrobot via Electro-magnetically Induced Vibration显示文摘This paper presents the moving mechanism of a high-speed insect-scale microrobot via electromagnetically induced vibration of two simply supported beams.The microrobot,which has a body length of 12.3 mm and a total mass of 137 mg,can achieve reciprocating lift motion of forelegs without any intermediate linkage mechanisms due to the design of an obliquely upward body tilt angle.The gait study shows that the body tilt angle prevents the forelegs from swinging backward when the feet contact the ground,which results in a forward friction force applied on the feet.During forward movement,the microrobot utilizes the elastic deformation of the simply supported beams as driving force to slide forward and its forelegs and rear legs work as pivots alternatively in a way similar to the movement of soft worms.The gait analysis also indicates that the moving direction of the microrobot is determined by whether its body tilt angle is obliquely upward or downward,and its moving speed is also related to the body tilt angle and as well as the body height.Under an applied AC voltage of 4 V,the microrobot can achieve a moving speed at 23.2 cm s1(18.9 body lengths per second),which is comparable to the fastest speed(20 cm s-1 or 20 body lengths per second)among the published insect-scale microrobots.The high-speed locomotion performance of the microrobot validates the feasibility of the presented actuation scheme and moving mechanism. | Xinyi Liu Zhiwei Liu Yangsheng Zhu Jiaming Leng Mingjing Qi Jianmei Huang Xiaojun Yan | 2021 | Journal of Bionic Engineering2021，18，3： | 0 |
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