Post-Graduate Programme in Materials Engineering and Sustainable Processes, Lutheran University of Brazil, Canoas 92425-900, Brazil.
Post-Graduate Programme in Electrical Engineering, Federal University of Rio Grande do Sul, Porto Alegre 90690-410, Brazil.
Sensors (Basel). 2018 Oct 18;18(10):3526. doi: 10.3390/s18103526.
This work presents a study of the traction, normal and stall forces in a two-sided planar actuator with orthogonal planar windings and a mover that comprises two cars magnetically coupled to each other through two pairs of permanent magnets (PMs). There is no ferromagnetic armature core because of the permanent magnets array in the mover and orthogonal traction forces can be generated in order to move both cars jointly in any direction on a plane. The stall force is the minimal force necessary to break up the magnetic coupling between the two cars. When one of the cars is subjected to an external force through the - or -axis, the cars can become out of alignment with respect to each other and the planar actuator cannot work properly. The behavior of the forces was modelled by numerical and analytical methods and experimental results were obtained from tests carried out on a prototype. The average sensitivity of the measured static propulsion planar force along either axis is 4.48 N/A. With a 20-mm displacement between the cars along the direction of the -axis and no armature current, a magnetic stall force of 17.26 N is produced through the same axis in order to restore the alignment of the two cars.
这项工作研究了具有正交平面绕组的双边平面执行器中的牵引力、法向力和失动力，该执行器的移动体由通过两对永磁体（PMs）相互磁耦合的两辆汽车组成。由于移动体中的永磁体阵列，没有铁磁电枢芯，并且可以产生正交牵引力，以便在平面上的任何方向上共同移动两辆车。失动力是打破两辆车之间磁耦合所需的最小力。当其中一辆车通过 - 或 - 轴受到外力时，两辆车可能会彼此不对准，并且平面执行器无法正常工作。通过数值和分析方法对力的行为进行了建模，并通过对原型进行的测试获得了实验结果。沿任一轴测量的静态推进平面力的平均灵敏度为 4.48 N/A。在沿 - 轴方向两辆车之间有 20 毫米的位移且没有电枢电流的情况下，通过同一轴产生 17.26 N 的磁失动力，以恢复两辆车的对准。
