Core Viewpoint - The article discusses the development and potential applications of a new wearable hand exoskeleton robot, MRHE, which significantly enhances grip strength and endurance while reducing fatigue during high-load tasks [1][3][6]. Group 1: Technology and Innovation - The MRHE system, developed by a collaborative team from Chinese University of Science and Technology and the University of Wollongong, utilizes magnetorheological (MR) actuators to improve hand grip strength and endurance without relying on external power sources [3][5]. - The MR actuator can output a maximum force of 1046N with only 5W of power consumption, achieving a force-to-power ratio that is an order of magnitude better than existing technologies [5][12]. - The system can provide a maximum assistive force of 788N for the entire hand, significantly enhancing the user's grip capabilities [5][25]. Group 2: Performance Testing and Results - Experimental results indicate that the MRHE can increase grip strength by an average of 85.8N, which is 41.8% higher than without the device, demonstrating its effectiveness in enhancing grip without external energy consumption [22][30]. - In endurance tests, participants wearing MRHE showed a 60% reduction in grip strength loss and doubled their endurance time in hanging challenges, indicating a substantial improvement in muscle fatigue management [24][25][27]. - The MRHE has shown promising results in simulated rescue scenarios, allowing users to move heavy objects more easily while reducing muscle exertion by 52% [27][28]. Group 3: Design and Components - The MRHE consists of six main components, including the MR actuator, power management board, force transmission linkages, and a lightweight exoskeleton structure designed for user comfort and efficiency [13][16]. - The innovative design of the MR actuator incorporates a ball screw mechanism and MR bearings, optimizing the conversion of rotational motion to linear motion while maintaining low energy consumption [9][11]. - The system's control mechanism allows for seamless switching between grip enhancement and endurance support based on user intent, showcasing its adaptability for various applications [20][21].