弥合触觉设备和协同机器人之间的差距,使用高度接的磁力动力学执行器
Jean-Sébastien Plante1,2, Alexandre St-Jean3, Jean-Philippe Lucking Bigué2
1Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC, Canada.
Scientific reports
|April 24, 2025
概括
磁铁神经学 (MR) 离合器执行器为机器人执行提供了一种新的解决方案,通过克服当前技术的局限性来实现类似人类的物理交互. 这些先进的执行器为机器人提供了在动力和灵活性方面都提供了卓越的性能.
科学领域:
- 机器人技术和人机交互的人机交互
- 执行系统和控制工程 执行系统和控制工程
- 材料科学与工程 (磁石流体)
背景情况:
- 目前的机器人执行硬件面临着由于设计需求冲突而导致高功率和灵巧任务要求平衡的局限性.
- 现有的技术,如和驱动器和准直接驱动器,具有固有的权衡,限制了人机物理相互作用的效率和多功能性.
- 对于能够模拟人类肌肉能力在强度和精致性方面的执行器的需求对于推进协作机器人 (cobots) 和触觉系统至关重要.
研究的目的:
- 为了研究磁铁雷奥学 (MR) 离合器执行器的潜力,以实现更类似人类的机器人交互.
- 通过分析和实验,将MR离合器执行器与领先的技术进行比较:波驱动器和准直接驱动器.
- 评估关键性能指标,包括扭矩与质量,扭矩与惯性,逆转负载,化刚度和功耗等.
主要方法:
- 开发分析模型来评估五个关键的执行器性能指标.
- 探索MR离合器执行器,声驱动器和准直接驱动器的设计空间.
- 分析模型的实验验证和性能比较.
主要成果:
- MR 执行器通过将发动机惯性与输出分离来解决冲突的轮选择,从而实现具有最小惯性的高轮比率.
- MR 执行器的流体接口允许可调节的阻尼,显著提高染刚度 (高达和驱动器的五倍).
- MR 执行器具有高扭矩密度 (>100 Nm/kg),低逆转扭矩和低功耗,在关键领域的性能优于传统执行器.
结论:
- 磁铁神经学离合器执行器为克服当前机器人执行系统的局限性提供了一个可行的技术.
- MR执行器提供高扭矩密度,可控制的刚度和低功耗的独特组合,这对于类似人类的机器人性能至关重要.
- 这些发现表明,MR执行器可以显著提升机器人的能力,在需要强大和微妙的物理相互作用的应用中.
相关概念视频
Mechanical Systems
153
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
153
Magnetic Damping
392
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
392
Electro-mechanical Systems
876
Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
876
Torque Free Motion
415
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...
415
Mechanical Efficiency of Real Machines
569
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
569


