Advanced Robotics · 2011 · 34 citations · 9 references
EngineeringMechanical EngineeringRobotics EngineeringActuatorsMechatronicsRoboticsActuation SystemsActuator DesignClutch DesignClutch SystemsMagnetic ActuationMagnetic ActuatorsClutch Actuation MechanismsCompact Actuator DesignFerrofluidic ActuatorsMagnetic Actuator DesignMagnetic Actuator FabricationMagnetic ClutchesMagnetorheological FluidsMagnetorheological Materials
Human–machine coexistent systems, such as power‑assist and rehabilitation devices, require hardware‑level safety enabled by human‑friendly actuators. The study aims to design and develop compact magnetorheological fluid clutches (CMRFCs) for 5‑ and 40‑Nm class human‑friendly actuators. The authors describe the CMRFC architecture and introduce a nano‑particle magnetorheological fluid to enhance performance. The resulting CMRFCs exhibit compact size and improved basic characteristics, demonstrating suitability for human‑friendly actuator applications.
There is a strong demand for a human–machine-coexistent machine, e.g., a power-assist system or a computer-aided rehabilitation system, in the context of the super-aging society. In such a human–machine-coexistent system, it is important to guarantee hardware-level safety by utilizing human-friendly actuators. In this study, we have developed a compact magnetorheological fluid clutch (CMRFC) for human-friendly actuators. In this paper, at first, the basic design of the CMRFC and developments of 5- and 40-Nm class devices are explained. Then we discuss experimental results on the basic characteristics of these devices. In the final part, a new magnetorheological fluid that includes nano-sized particles is discussed.
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MR fluid, foam and elastomer devices
J. D. Carlson, Mark Jolly · Mechatronics · 2000 · 1.2K citations